Powered by Deep Web Technologies
Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Ryan Sun Chee Fore | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Ryan Sun Chee Fore About Us Ryan Sun Chee Fore - Marine and Hydrokinetic Technology Manager Most Recent Riding the Clean Energy Wave: New Projects Aim to Improve Water Power...

2

WA_01_011_HONEYWELL_LABORATORIES_Waiver_of_Domestic_and_Fore...  

Broader source: Energy.gov (indexed) [DOE]

11HONEYWELLLABORATORIESWaiverofDomesticandFore.pdf WA01011HONEYWELLLABORATORIESWaiverofDomesticandFore.pdf WA01011HONEYWELLLABORATORIESWaiverofDomesticandF...

3

WA_04_009_ROCKWELL_SCIENTIFIC_CO_Wailve_of_Domestic_And_Fore...  

Broader source: Energy.gov (indexed) [DOE]

WA1995019DONNELLYCORPORATIONWaiverofDomesticandFore.pdf WA1995018OPTICALCOATINGLABORATORYINCWaiverofDomesti.pdf WA00030ASEAMERICASRequesttoAssign...

4

Hydraulic fractur ing--also called hy  

E-Print Network [OSTI]

Hydraulic fractur ing--also called hy drofracking or frack ing--is a process where large volumes) is an aquatic invasive spe cies listed on the USDA's federal noxious weeds list (http:// www.aphis.usda.gov/plant_health

Goodman, Robert M.

5

Ing Arvid Nesheim | Open Energy Information  

Open Energy Info (EERE)

search Name: Ing Arvid Nesheim Address: Hoymyrmarka 123A Place: Vollen Zip: 1391 Region: Norway Sector: Marine and Hydrokinetic Phone Number: 47 951 08 439 Website: http:...

6

Curriculum Vitae Prof. Ing. Vincenzo Tucci  

E-Print Network [OSTI]

Curriculum Vitae Prof. Ing. Vincenzo Tucci;Vincenzo Tucci Curriculum Vitae Pagina 2 di 15 Vincenzo Tucci Professore Ordinario di Elettrotecnica;Vincenzo Tucci Curriculum Vitae Pagina 3 di 15 II. ATTIVIT√? SCIENTIFICA Il prof. Tucci √® responsabile del

Costagliola, Gennaro

7

Casting methods  

DOE Patents [OSTI]

A casting device includes a covered crucible having a top opening and a bottom orifice, a lid covering the top opening, a stopper rod sealing the bottom orifice, and a reusable mold having at least one chamber, a top end of the chamber being open to and positioned below the bottom orifice and a vacuum tap into the chamber being below the top end of the chamber. A casting method includes charging a crucible with a solid material and covering the crucible, heating the crucible, melting the material, evacuating a chamber of a mold to less than 1 atm absolute through a vacuum tap into the chamber, draining the melted material into the evacuated chamber, solidifying the material in the chamber, and removing the solidified material from the chamber without damaging the chamber.

Marsden, Kenneth C.; Meyer, Mitchell K.; Grover, Blair K.; Fielding, Randall S.; Wolfensberger, Billy W.

2012-12-18T23:59:59.000Z

8

Canyon and channel networks of Peru-Chile fore arc at Arica Bight  

SciTech Connect (OSTI)

Canyons and channels of the Peru-Chile fore arc between 17{degree}30'S to 19{degree}30'S form a complex, integrated network revealed in SeaMARC II side-scan mosaics. The largest canyon, incised 200-600 m, is bordered by a series of sidewall slumps, producing a sinuosity that mimics subaerial meanders. The canyon courses across the Arequipa fore-arc basin floor, across a structural high and onto the middle trench slope to about 4,000 m where it disappears into a background of complex small-scale structures, From 500-2,500 m depth the canyon strikes north-south oblique to the regional slope. At 2,500 m, it abruptly turns to the southwest toward the trench axis. At this elbow, a second canyon heads on the midslope and also trends north-south until 3,500 m, where it too abruptly changes to a southwest course. A history of stream piracy analogous to subaerial systems is implied in this geometry. Tributaries join this main canyon from the landward side, forming a dendritic pattern. These channels have levees which are linked by submarine crevasse splays to sediment waves on the Arequipa basin floor. The orientation of the waves is reminiscent of bow waves from a passing ship, oblique to channel and pointing downslope, and may provide an indication of the vertical extent of passing turbidity currents. Sediments are dominantly olive gray, hemipelagic silts with sands present only immediately adjacent to the canyons. Boulders of mudstone line portions of the canyon floor. Sands are absent from the lowermost slope and trench axis, as are any indications of submarine fans. Sands may be rare in this system, with those that are present kneaded into the active margin system along the lower trench slope.

Coulbourn, W.T. (Hawaii Institute of Geophysics, Honolulu (USA))

1990-05-01T23:59:59.000Z

9

Clean Metal Casting  

SciTech Connect (OSTI)

The objective of this project is to develop a technology for clean metal processing that is capable of consistently providing a metal cleanliness level that is fit for a given application. The program has five tasks: Development of melt cleanliness assessment technology, development of melt contamination avoidance technology, development of high temperature phase separation technology, establishment of a correlation between the level of melt cleanliness and as cast mechanical properties, and transfer of technology to the industrial sector. Within the context of the first task, WPI has developed a standardized Reduced Pressure Test that has been endorsed by AFS as a recommended practice. In addition, within the context of task1, WPI has developed a melt cleanliness sensor based on the principles of electromagnetic separation. An industrial partner is commercializing the sensor. Within the context of the second task, WPI has developed environmentally friendly fluxes that do not contain fluorine. Within the context of the third task, WPI modeled the process of rotary degassing and verified the model predictions with experimental data. This model may be used to optimize the performance of industrial rotary degassers. Within the context of the fourth task, WPI has correlated the level of melt cleanliness at various foundries, including a sand casting foundry, a permanent mold casting foundry, and a die casting foundry, to the casting process and the resultant mechanical properties. This is useful in tailoring the melt cleansing operations at foundries to the particular casting process and the desired properties of cast components.

Makhlouf M. Makhlouf; Diran Apelian

2002-02-05T23:59:59.000Z

10

After the 1950's: Looking Back at William Inge  

E-Print Network [OSTI]

that there is an Aaron Copeland quality to Ingeís plays Ė a lyrical (45) sadness (with overtones of ďMoonglowĒ?). Without fanfare or hyperbole, typical of his style as a man and playwright (he dressed and spoke plainly), William Inge had told me something sad, wise... at the center of his plays.] And of equal, if not greater importance, Rubin has no place to go. He is a ďharnessĒ salesman (229) in the age of the automobile. ďRaised on a ranch,Ē he is a son of the West. A son of pioneers, he is ďa stranger in the very land...

Wolf, Howard R.

2010-04-21T23:59:59.000Z

11

The increase in use of isostatic processing for aluminum alloy castings  

SciTech Connect (OSTI)

The castings industry originally perceived isostatic processing as a means of reducing scrap rates. Prior to the development of HIP`ing no other non-destructive technique was available which let to improved economics. However in recent years the emphasis has changed towards the exploitation of improved properties as design engineers realize that cast parts which have been HIP`d can develop capabilities similar to those of forged components. This paper presents experimental data regarding compaction during HIP and CIP processes, applied to various aluminum castings alloys which are used extensively in the Romanian automotive industry.

Geaman, V. [Univ. Transylvania of Brasov (Romania)

1996-12-31T23:59:59.000Z

12

Salvaged castings and methods of salvaging castings with defective cast cooling bumps  

DOE Patents [OSTI]

Castings for gas turbine parts exposed on one side to a high-temperature fluid medium have cast-in bumps on an opposite cooling surface side to enhance heat transfer. Areas on the cooling surface having defectively cast bumps, i.e., missing or partially formed bumps during casting, are coated with a braze alloy and cooling enhancement material to salvage the part.

Johnson, Robert Alan (Simpsonville, SC); Schaeffer, Jon Conrad (Greenville, SC); Lee, Ching-Pang (Cincinnati, OH); Abuaf, Nesim (Lincoln City, OR); Hasz, Wayne Charles (Pownal, VT)

2002-01-01T23:59:59.000Z

13

STEM-ing the Tide | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

STEM-ing the Tide STEM-ing the Tide STEM-ing the Tide September 29, 2010 - 4:29pm Addthis Ali Zaidi Special Assistant to the Secretary of Energy Yesterday, the MacArthur Foundation rolled out its latest class of "geniuses" - 23 Americans who stand out because of their creativity and enterprise. Each recipient of the honor (and the $500,000 prize) has made an extraordinary contribution. One of those recipients is Amir Abo-Shaeer, an engineer in the aerospace and telecommunications industries who decided 10 years ago to go back to high school - this time as a teacher. At his alma mater, Dos Pueblos High School (in Santa Barbara, California), Amir created "a school within a school" built around a hands-on curriculum that helps students learn by connecting the ideas of physics, engineering and mathematics through

14

Extrusion cast explosive  

DOE Patents [OSTI]

Improved, multiphase, high performance, high energy, extrusion cast explosive compositions, comprising, a crystalline explosive material; an energetic liquid plasticizer; a urethane prepolymer, comprising a blend of polyvinyl formal, and polycaprolactone; a polyfunctional isocyanate; and a catalyst are disclosed. These new explosive compositions exhibit higher explosive content, a smooth detonation front, excellent stability over long periods of storage, and lower sensitivity to mechanical stimulants.

Scribner, Kenneth J. (Livermore, CA)

1985-01-01T23:59:59.000Z

15

Misleading advertising MISLEadING adVErTISING  

E-Print Network [OSTI]

03 Misleading advertising #12;MISLEadING adVErTISING Background The ASA may take the Consumer to the consumer by other means. 3.4 For marketing communications that quote prices for advertised products other trader on whose behalf the marketer is acting 3.4.3 the price of the advertised product, including

Wirosoetisno, Djoko

16

march/april 2013, Vol. 89, No. 2 --The ForesTry chroNicle 205 TRANSFOR-M: A unique transatlantic forestry Master program  

E-Print Network [OSTI]

march/april 2013, Vol. 89, No. 2 -- The ForesTry chroNicle 205 TRANSFOR-M: A unique transatlantic Sciences, Umeå, Sweden; and Bangor University, Wales) universities have developed a new transatlantic

Hamann, Andreas

17

ITP Metal Casting: A Vision for the U.S. Metal Casting Industry...  

Broader source: Energy.gov (indexed) [DOE]

mcvision.pdf More Documents & Publications ITP Metal Casting: Metalcasting Industry Technology Roadmap ITP Metal Casting: Implementation of Metal Casting Best Practices ITP...

18

Extrusion cast explosive  

DOE Patents [OSTI]

Improved, multiphase, high performance, high energy, extrusion cast explosive compositions, comprising, a crystalline explosive material; an energetic liquid plasticizer; a urethane prepolymer, comprising a blend of polyvinyl formal, and polycaprolactone; a polyfunctional isocyanate; and a catalyst are disclosed. These new explosive compositions exhibit higher explosive content, a smooth detonation front, excellent stability over long periods of storage, and lower sensitivity to mechanical stimulants. 1 fig.

Scribner, K.J.

1985-01-29T23:59:59.000Z

19

Extrusion cast explosive  

DOE Patents [OSTI]

Disclosed is an improved, multiphase, high performance, high energy, extrusion cast explosive compositions, comprising, a crystalline explosive material; an energetic liquid plasticizer; a urethane prepolymer, comprising a blend of polyvinyl formal, and polycaprolactone; a polyfunctional isocyanate; and a catalyst. These new explosive compositions exhibit higher explosive content, a smooth detonation front, excellent stability over long periods of storage, and lower sensitivity to mechanical stimulants. 1 fig.

Scribner, K.J.

1985-11-26T23:59:59.000Z

20

Fort Inge and the Texas frontier, 1849-1869  

E-Print Network [OSTI]

the Civil War. Personalities associated with the history of Fort Inge include frontier artist Captain Seth Eastman, Frederick Law Olmsted, Bigfoot Wallace, Lydia Spencer Lane, and army officers such as William J. Hardee, Edmund Kirby Smith, Eugene A. Carr..., Gordon Granger, Zenas R. Bliss, William "Wild Bill" Hazen, John L. Bullis, and Fitzhugh Lee. This case study examines a number of topical problems associated with the U. S. Army and the frontier. Was the Army s role as an economic multiplier and mar...

Smith, Thomas Tyree

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Cast dielectric composite linear accelerator  

DOE Patents [OSTI]

A linear accelerator having cast dielectric composite layers integrally formed with conductor electrodes in a solventless fabrication process, with the cast dielectric composite preferably having a nanoparticle filler in an organic polymer such as a thermosetting resin. By incorporating this cast dielectric composite the dielectric constant of critical insulating layers of the transmission lines of the accelerator are increased while simultaneously maintaining high dielectric strengths for the accelerator.

Sanders, David M. (Livermore, CA); Sampayan, Stephen (Manteca, CA); Slenes, Kirk (Albuquerque, NM); Stoller, H. M. (Albuquerque, NM)

2009-11-10T23:59:59.000Z

22

Ultra Large Castings For Lightweight Vehicle Structures  

Broader source: Energy.gov (indexed) [DOE]

Die Casting process for their potential to enable the production of aluminum and magnesium primary automotive cast structural components with consistent and predictable...

23

ITP Metal Casting: Metalcasting Industry Technology Roadmap  

Broader source: Energy.gov [DOE]

Castings are essential building blocks of U. S. industry. More than 90% of all mnaufactured, durable good and 100% of all manufacturing machinery contain castings.

24

H C26 Performance Analysis of Optica1 Interconnection Systems Inch-ing  

E-Print Network [OSTI]

Analysis of Optica1 Interconnection Systems Inch- ing T ransmitter T emperature Dependence .√® ¬Į √? , √? √? √¨

Choi, Woo-Young

25

13:00 Begrung und Symposiumserffnung Prof. Dr.-Ing. Gerd Holbach  

E-Print Network [OSTI]

Windenergie-Gewinnung Dipl.-Ing. Jörgen Thiele Stiftung Offshore-Windenergie, Varel 14:45 Evolution der

Berlin,Technische Universität

26

Strip casting with fluxing agent applied to casting roll  

DOE Patents [OSTI]

A strip caster (10) for producing a continuous strip (24) includes a tundish (12) for containing a melt (14), a pair of horizontally disposed water cooled casting rolls (22) and devices (29) for electrostatically coating the outer peripheral chill surfaces (44) of the casting rolls with a powder flux material (56). The casting rolls are juxtaposed relative to one another for forming a pouting basin (18) for receiving the melt through a teeming tube (16) thereby establishing a meniscus (20) between the rolls for forming the strip. The melt is protected from the outside air by a non-oxidizing gas passed through a supply line (28) to a sealing chamber (26). A preferred flux is boron oxide having a melting point of about 550.degree. C. The flux coating enhances wetting of the steel melt to the casting roll and dissolves any metal oxide formed on the roll.

Williams, Robert S. (Fairfield, OH); O'Malley, Ronald J. (Miamisburg, OH); Sussman, Richard C. (West Chester, OH)

1997-01-01T23:59:59.000Z

27

Strip casting apparatus and method  

DOE Patents [OSTI]

Strip casting apparatus including a molten-metal-holding container and a nozzle to deposit molten metal onto a moving chill drum to directly cast continuous metallic strip. The nozzle body includes a slot bounded between a back and a front lip. The slot width exceeds about 20 times the gap distance between the nozzle and the chill drum surface. Preferably, the slot width exceeds 0.5 inch. This method of strip casting minimizes pressure drop, insuring better metal-to-chill-drum contact which promotes heat transfer and results in a better quality metallic strip. 6 figs.

Williams, R.S.; Baker, D.F.

1988-09-20T23:59:59.000Z

28

Energy Consumption of Die Casting Operations  

SciTech Connect (OSTI)

Molten metal processing is inherently energy intensive and roughly 25% of the cost of die-cast products can be traced to some form of energy consumption [1]. The obvious major energy requirements are for melting and holding molten alloy in preparation for casting. The proper selection and maintenance of melting and holding equipment are clearly important factors in minimizing energy consumption in die-casting operations [2]. In addition to energy consumption, furnace selection also influences metal loss due to oxidation, metal quality, and maintenance requirements. Other important factors influencing energy consumption in a die-casting facility include geographic location, alloy(s) cast, starting form of alloy (solid or liquid), overall process flow, casting yield, scrap rate, cycle times, number of shifts per day, days of operation per month, type and size of die-casting form of alloy (solid or liquid), overall process flow, casting yield, scrap rate, cycle times, number of shifts per day, days of operation per month, type and size of die-casting machine, related equipment (robots, trim presses), and downstream processing (machining, plating, assembly, etc.). Each of these factors also may influence the casting quality and productivity of a die-casting enterprise. In a die-casting enterprise, decisions regarding these issues are made frequently and are based on a large number of factors. Therefore, it is not surprising that energy consumption can vary significantly from one die-casting enterprise to the next, and within a single enterprise as function of time.

Jerald Brevick; clark Mount-Campbell; Carroll Mobley

2004-03-15T23:59:59.000Z

29

Advanced Lost Foam Casting Technology  

SciTech Connect (OSTI)

This report describes the research done under the six tasks to improve the process and make it more functional in an industrial environment. Task 1: Pattern Pyrolysis Products and Pattern Properties Task 2: Coating Quality Control Task 3: Fill and Solidification Code Task 4: Alternate Pattern Materials Task 5: Casting Distortion Task 6: Technology Transfer

Charles E. Bates; Harry E. Littleton; Don Askeland; Taras Molibog; Jason Hopper; Ben Vatankhah

2000-11-30T23:59:59.000Z

30

"Dark Web: Exploring and Min-ing the Dark Side of the Web"  

E-Print Network [OSTI]

Title: "Dark Web: Exploring and Min- ing the Dark Side of the Web" Speaker: Director, Prof will review the emerging research in Terrorism Informatics based on a web mining perspective. Recent progress in the internationally re- nowned Dark Web project will be reviewed, including: deep/dark web spider- ing (web sites

Michelsen, Claus

31

Power Electronics and Electrical Drives Prof. Dr.-Ing. Joachim Bcker  

E-Print Network [OSTI]

vehiclesElectric vehicles RailCab Power Electronics Switched-mode power supplies High efficiency Drives and Electric Vehicles Power Electronics and Electrical Drives 5 Prof. Dr.-Ing. Joachim BöckerPower Electronics and Electrical Drives Prof. Dr.-Ing. Joachim Böcker Research Topics Mechatronic

Hellebrand, Sybille

32

TRANSPORTATION SYSTEMS are the build-ing blocks of modern society. Efficient and  

E-Print Network [OSTI]

agenciestoprovideleadershiponresearch,ed- ucation and technology transfer to address is- sues related to transportation system produc- cation, and technology transfer pertain- ing to all forms of transportation. Work- ing through the GTI and its its international goods movement infrastructure.With substantial increases in demand

Storici, Francesca

33

Process development of thin strip steel casting  

SciTech Connect (OSTI)

An important new frontier is being opened in steel processing with the emergence of thin strip casting. Casting steel directly to thin strip has enormous benefits in energy savings by potentially eliminating the need for hot reduction in a hot strip mill. This has been the driving force for numerous current research efforts into the direct strip casting of steel. The US Department of Energy initiated a program to evaluate the development of thin strip casting in the steel industry. In earlier phases of this program, planar flow casting on an experimental caster was studied by a team of engineers from Westinghouse Electric corporation and Armco Inc. A subsequent research program was designed as a fundamental and developmental study of both planar and melt overflow casting processes. This study was arranged as several separate and distinct tasks which were often completed by different teams of researchers. An early task was to design and build a water model to study fluid flow through different designs of planar flow casting nozzles. Another important task was mathematically modeling of melt overflow casting process. A mathematical solidification model for the formation of the strip in the melt overflow process was written. A study of the material and conditioning of casting substrates was made on the small wheel caster using the melt overflow casting process. This report discusses work on the development of thin steel casting.

Sussman, R.C.; Williams, R.S.

1990-12-01T23:59:59.000Z

34

The Essence of American Drama: The Short Plays of William Inge  

E-Print Network [OSTI]

complexly, if not more effectively, in the plays of Tennessee Williams; ordinary social settings Ė ďThe Fiesta Room of the Hotel Boomerang in a small town in middle Texas (79) where Bus Rileyís Back In Town takes place; and even Ė perhaps especially... Ė the ďPROPERTY PLOT.Ē Ingeís theatrical spaces tend to be bare and spare. In THE RAINY AFTERNOON, there are: ďNail kegs, barrels, tool chests, 2 dolls, 2 glassesĒ (107). In THE STRAINS OF TRIUMPH, there is only a ďCaneĒ (142). Although I have said that Inge...

Wolf, Howard R.

2012-04-01T23:59:59.000Z

35

A review of "ďThe TempleĒ mit einer deutschen VersŁbersetzung." by Inge Leimberg ed. George Herbert  

E-Print Network [OSTI]

REVIEWS 189 George Herbert. ?The Temple? mit einer deutschen Vers?bersetzung. Ed. Inge Leimberg. M?nster, New York, Munich, Berlin: Waxmann Verlag, 2002. xx + 473 pp. 39,00 EURO. Review by BILL ENGEL (NASHVILLE, TENNESSEE). Seventeenth...

Bill Engel

2002-01-01T23:59:59.000Z

36

Due to hardware limitations dur-ing the first 20-year-span of life of the  

E-Print Network [OSTI]

NEXRAD Now Due to hardware limitations dur- ing the first 20-year-span of life of the WSR-88D) and RDA (Radar Data Acquisition) hardware upgrades, an on-going effort to migrate to modern process- ing

37

Gating of Permanent Molds for ALuminum Casting  

SciTech Connect (OSTI)

This report summarizes a two-year project, DE-FC07-01ID13983 that concerns the gating of aluminum castings in permanent molds. The main goal of the project is to improve the quality of aluminum castings produced in permanent molds. The approach taken was determine how the vertical type gating systems used for permanent mold castings can be designed to fill the mold cavity with a minimum of damage to the quality of the resulting casting. It is evident that somewhat different systems are preferred for different shapes and sizes of aluminum castings. The main problems caused by improper gating are entrained aluminum oxide films and entrapped gas. The project highlights the characteristic features of gating systems used in permanent mold aluminum foundries and recommends gating procedures designed to avoid common defects. The study also provides direct evidence on the filling pattern and heat flow behavior in permanent mold castings.

David Schwam; John F. Wallace; Tom Engle; Qingming Chang

2004-03-30T23:59:59.000Z

38

SmartCast - Novel Textile Sensors for Embedded Pressure Sensing of Orthopedic Casts  

E-Print Network [OSTI]

J. Kaiser, Chair An orthopedic plaster or fiberglass cast is1 - Introduction 1.1 Background A plaster or fiberglass castunderstand how well a plaster or fiberglass cast fits over

Danilovic, Andrew

2013-01-01T23:59:59.000Z

39

ITP Metal Casting: Metalcasting Industry Technology Roadmap  

Broader source: Energy.gov (indexed) [DOE]

A partial listing of these projects is provided below. Products and Markets ' Casting Conversions Materials Technology ' Development of Material Data Bases for HPNb and HPNb+...

40

Flux and the Continuous Casting of Steel  

Science Journals Connector (OSTI)

......removed by the cooling water. It is the loss of heat...in the space above the pool of liquid steel. Some...casting is cooled by water jets. The casting then...of liquid steel in the pooL The stage, from the...provided that the overall conservation of energy is satisfied......

D. R. BLAND

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

RELIABILITY-BASED CASTING PROCESS DESIGN OPTIMIZATION  

E-Print Network [OSTI]

RELIABILITY-BASED CASTING PROCESS DESIGN OPTIMIZATION Richard Hardin1 , K.K. Choi1 , and Christoph 52242-1527 Keywords: Casting Process Design, Optimization, Reliability-Based Design Optimization purpose reliability-based design optimization (RBDO) software tool previously developed at the University

Beckermann, Christoph

42

ITP Metal Casting: Corrosion Testing Practices - High Alloy Corrosion...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Metal Casting: Corrosion Testing Practices - High Alloy Corrosion Program ITP Metal Casting: Corrosion Testing Practices - High Alloy Corrosion Program lehighfs.pdf More Documents...

43

Magnesium Replacement of Aluminum Cast Components in a Production...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Magnesium Replacement of Aluminum Cast Components in a Production V6 Engine to Effect Cost-Effective Mass Reduction Magnesium Replacement of Aluminum Cast Components in a...

44

Ultra Large Castings for Lightweight Vehicle Structures ?AMD...  

Broader source: Energy.gov (indexed) [DOE]

Maryland. merit08mccarty6.pdf More Documents & Publications Ultra Large Castings For Lightweight Vehicle Structures Magnesium Powertrain Cast Components Project (AMD 304)...

45

Ultra Large Castings for Lightweight Vehicle Structures ?AMD...  

Broader source: Energy.gov (indexed) [DOE]

high volume casting process capable of producing large, thin-walled aluminum or magnesium castings.* HPDCs are not suitable for most primary automotive body structural...

46

ITP Metal Casting: Advanced Melting Technologies: Energy Saving...  

Broader source: Energy.gov (indexed) [DOE]

Advanced Melting Technologies: Energy Saving Concepts and Opportunities for the Metal Casting Industry ITP Metal Casting: Advanced Melting Technologies: Energy Saving Concepts and...

47

Reliability Tools for Resonance Inspection of Light Metal Castings...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

for Light Metal Castings FY 2009 Progress Report for Lightweighting Materials - 10. Nondestructive Evaluation NDE 701: Enhanced Resonance Inspection for Light Metal Castings...

48

NDE 701: Enhanced Resonance Inspection for Light Metal Castings...  

Broader source: Energy.gov (indexed) [DOE]

NDE 701: Enhanced Resonance Inspection for Light Metal Castings NDE 701: Enhanced Resonance Inspection for Light Metal Castings Presentation from the U.S. DOE Office of Vehicle...

49

"Cook"ing at Y-12 for 70 years | Y-12 National Security Complex  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

"Cook"ing at Y-12 ... "Cook"ing at Y-12 ... "Cook"ing at Y-12 for 70 years Posted: December 5, 2013 - 4:48pm At a Nov. 14 visit to Y-12, National Nuclear Security Administration's Deputy Administrator for Defense Don Cook shared his outlook on the future and his thanks to employees for continuing their 70-year tradition of making America safer. "There are three things to remember," Cook told a meeting of NNSA Production Office and Y-12 employees. "We have an enduring mission. Y-12 plays a key role in it. And a nuclear deterrent remains the ultimate insurance policy for America." Cook also shared his thanks for preparing for the potential furlough in October because of the government shutdown and lack of appropriations. During what was the longest government shutdown to date, Cook said Y-12

50

Dimension Estimation-based Spectrum Sens-ing for Cognitive Radio  

E-Print Network [OSTI]

Dimension Estimation-based Spectrum Sens- ing for Cognitive Radio Bassem Zayen and Aawatif Hayar. Introduction The discrepancy between current-day spectrum allocation and spectrum use sug- gests that radio mean that radios could find and adapt to any immediate local spectrum availability. A new class

Gesbert, David

51

Climate change is not "a problem" wait-ing for "a solution". It is an environ-  

E-Print Network [OSTI]

41 Climate change is not "a problem" wait- ing for "a solution". It is an environ- mental, cultural humanity's place on Earth. My new book, Why We Disagree About Climate Change, dissects this idea of climate about it. It also develops a different way of approaching the idea of climate change and of working

Hulme, Mike

52

This tutorial describes stroke-based render-ing (SBR), an automatic approach to cre-  

E-Print Network [OSTI]

This tutorial describes stroke-based render- ing (SBR), an automatic approach to cre- ating nonphotorealistic imagery by placing discrete elements such as paint strokes or stipples. Researchers have proposed strokes are placed in a manner that match- estheoriginalphotograph,andthen rendered to have the appearance

Toronto, University of

53

Fraunhofer FOKUSCompetence Center NGNI Prof. Dr.-Ing. habil Thomas Magedanz  

E-Print Network [OSTI]

Fraunhofer FOKUSCompetence Center NGNI Overview √?berblick 1 Prof. Dr.-Ing. habil Thomas Magedanz Berlin, Germany Internet: www.av.tu-berlin.de Email: tm@cs.tu-berlin.de #12;Fraunhofer FOKUSCompetence and IT is fueling the innovation in Service Delivery Platforms and underlying networking infrastructures ¬∑ IP

Wichmann, Felix

54

BEST MANAGEMENT PRACTICES FOR POTATOES seec ing Potato Voriet-es  

E-Print Network [OSTI]

BEST MANAGEMENT PRACTICES FOR POTATOES seec ing Potato Voriet-es for Mic -gon 45¬Ę Richard Chase bal to a high quality potato crop for commer- inche in rows 34 inches apart. Based on a soil test cial outlet. Extensive potato Ibs K20/A. variety performance trials are conducted each year Harvests were made

Douches, David S.

55

Power and sample size calculations for designing rare variant sequenc-ing association studies.  

E-Print Network [OSTI]

of the statistical power of SKAT. Required sample size can be computed easily by inverting the power functionPower and sample size calculations for designing rare variant sequenc- ing association studies pow- erful than the collapsing based burden tests under many circumstances [4]. To design new sequence

Lin, Xihong

56

Preparation of actinide metal targets using special casting techniques  

Science Journals Connector (OSTI)

Various casting techniques and mold design have been evaluated at Rocky Flats for preparing actinide metal targets. A tilt-pour casting technique is used for targets > 0.040 in. thick, and an injection casting technique has been developed for targets neptunium, and uranium metal ingots and disks ranging from 0.005Ė0.600 in. thickness have been cast.

W.V. Conner

1972-01-01T23:59:59.000Z

57

Methods and apparatus for manufacturing monocrystalline cast silicon and monocrystalline cast silicon bodies for photovoltaics  

DOE Patents [OSTI]

Methods and apparatuses are provided for casting silicon for photovoltaic cells and other applications. With such methods and apparatuses, a cast body of monocrystalline silicon may be formed that is free of, or substantially free of, radially-distributed impurities and defects and having at least two dimensions that are each at least about 35 cm is provided.

Stoddard, Nathan G

2014-01-14T23:59:59.000Z

58

Advanced Pattern Material for Investment Casting Applications  

SciTech Connect (OSTI)

Cleveland Tool and Machine (CTM) of Cleveland, Ohio in conjunction with Harrington Product Development Center (HPDC) of Cincinnati, Ohio have developed an advanced, dimensionally accurate, temperature-stable, energy-efficient and cost-effective material and process to manufacture patterns for the investment casting industry. In the proposed technology, FOPAT (aFOam PATtern material) has been developed which is especially compatible with the investment casting process and offers the following advantages: increased dimensional accuracy; increased temperature stability; lower cost per pattern; less energy consumption per pattern; decreased cost of pattern making equipment; decreased tooling cost; increased casting yield. The present method for investment casting is "the lost wax" process, which is exactly that, the use of wax as a pattern material, which is then melted out or "lost" from the ceramic shell. The molten metal is then poured into the ceramic shell to produce a metal casting. This process goes back thousands of years and while there have been improvements in the wax and processing technology, the material is basically the same, wax. The proposed technology is based upon an established industrial process of "Reaction Injection Molding" (RIM) where two components react when mixed and then "molded" to form a part. The proposed technology has been modified and improved with the needs of investment casting in mind. A proprietary mix of components has been formulated which react and expand to form a foam-like product. The result is an investment casting pattern with smooth surface finish and excellent dimensional predictability along with the other key benefits listed above.

F. Douglas Neece Neil Chaudhry

2006-02-08T23:59:59.000Z

59

InspIrIng generatIons through Knowledge and dIscovery  

E-Print Network [OSTI]

;IntroductIon 2 Imagining the Future 2 On the Verge of a New Era 2 A Smithsonian for the 21st Century 3IthsonIan for the 21st century #12;2 introduction ImagInIng the Future imagine being able to access all known as a boy to the camp table he used on safari, to his contemporaries' recollections of his vigor

Mathis, Wayne N.

60

tHe LeAdING MBA IN JAPAN Japan's Leading  

E-Print Network [OSTI]

tHe LeAdING MBA IN JAPAN MBA Japan #12;Japan's Leading Master of Business adMinistration prograM the mcgill mBa JaPan Program, oFFered By mcgill University's desaUtels FacUlty oF management, is the leading mBa Program in JaPan. the two-weekends-Per-month Format allows stUdents to comPlete a FUll, to

Shoubridge, Eric

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

mis of most land plants is uniseriate (compris-ing one layer), and if SHR and SCR orthologs  

E-Print Network [OSTI]

378 mis of most land plants is uniseriate (compris- ing one layer), and if SHR and SCR orthologs- mis in some organs (8). These horsetails have apparently tinkered with their SCR and SHR genes to allow SHR to escape the clutches of SCR in the first endodermal layer, thus extend- ing the endodermis

62

The X-ray Telescope of CAST  

E-Print Network [OSTI]

The Cern Axion Solar Telescope (CAST) is in operation and taking data since 2003. The main objective of the CAST experiment is to search for a hypothetical pseudoscalar boson, the axion, which might be produced in the core of the sun. The basic physics process CAST is based on is the time inverted Primakoff effect, by which an axion can be converted into a detectable photon in an external electromagnetic field. The resulting X-ray photons are expected to be thermally distributed between 1 and 7 keV. The most sensitive detector system of CAST is a pn-CCD detector combined with a Wolter I type X-ray mirror system. With the X-ray telescope of CAST a background reduction of more than 2 orders off magnitude is achieved, such that for the first time the axion photon coupling constant g_agg can be probed beyond the best astrophysical constraints g_agg < 1 x 10^-10 GeV^-1.

M. Kuster; H. Bršuninger; S. Cťbrian; M. Davenport; C. Elefteriadis; J. Englhauser; H. Fischer; J. Franz; P. Friedrich; R. Hartmann; F. H. Heinsius; D. H. H. Hoffmann; G. Hoffmeister; J. N. Joux; D. Kang; K. KŲnigsmann; R. Kotthaus; T. Papaevangelou; C. Lasseur; A. Lippitsch; G. Lutz; J. Morales; A. RodrŪguez; L. StrŁder; J. Vogel; K. Zioutas

2007-05-10T23:59:59.000Z

63

The industrial ecology of the iron casting industry  

E-Print Network [OSTI]

Metal casting is an energy and materials intensive manufacturing process, which is an important U.S. industry. This study analyzes iron casting, in particular, for possible improvements that will result in greater efficiencies ...

Jones, Alissa J. (Alissa Jean)

2007-01-01T23:59:59.000Z

64

E-Print Network 3.0 - a356 solidification cast Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Mathematics 10 Capabilities and Integration Potential of Current Casting Design Software Summary: and engineering information, simulation of the casting process...

65

Casting inorganic structures with DNA molds  

Science Journals Connector (OSTI)

...ligands can be used to tune the energy difference of selected crystallographic...casting a Ag cuboid. Cyan and green dots denote (anti-)connectors...likely a consequence of surface energy minimization of...properties Next we used electron energy loss spectroscopy (EELS...

Wei Sun; Etienne Boulais; Yera Hakobyan; Wei Li Wang; Amy Guan; Mark Bathe; Peng Yin

66

Casting inorganic structures with DNA molds  

Science Journals Connector (OSTI)

...ligands can be used to tune the energy difference of selected crystallographic...casting of Ag cuboid. Cyan and green dots denote (anti-)connectors...likely a consequence of surface energy minimization of Ag...properties Next, we used electron energy loss spectroscopy (EELS...

Wei Sun; Etienne Boulais; Yera Hakobyan; Wei Li Wang; Amy Guan; Mark Bathe; Peng Yin

2014-11-07T23:59:59.000Z

67

Metallic Fuel Casting Development and Parameter Optimization Simulations  

SciTech Connect (OSTI)

One of the advantages of metallic fuel is the abilility to cast the fuel slugs to near net shape with little additional processing. However, the high aspect ratio of the fuel is not ideal for casting. EBR-II fuel was cast using counter gravity injection casting (CGIC) but, concerns have been raised concerning the feasibility of this process for americium bearing alloys. The Fuel Cycle Research and Development program has begun developing gravity casting techniques suitable for fuel production. Compared to CGIC gravity casting does not require a large heel that then is recycled, does not require application of a vacuum during melting, and is conducive to re-usable molds. Development has included fabrication of two separate benchscale, approximately 300 grams, systems. To shorten development time computer simulations have been used to ensure mold and crucible designs are feasible and to identify which fluid properties most affect casting behavior and therefore require more characterization.

R.S. Fielding; J. Crapps; C. Unal; J.R. Kennedy

2013-03-01T23:59:59.000Z

68

Solar axion search with the CAST experiment  

E-Print Network [OSTI]

The CAST (CERN Axion Solar Telescope) experiment is searching for solar axions by their conversion into photons inside the magnet pipe of an LHC dipole. The analysis of the data recorded during the first phase of the experiment with vacuum in the magnet pipes has resulted in the most restrictive experimental limit on the coupling constant of axions to photons. In the second phase, CAST is operating with a buffer gas inside the magnet pipes in order to extent the sensitivity of the experiment to higher axion masses. We will present the first results on the $^{4}{\\rm He}$ data taking as well as the system upgrades that have been operated in the last year in order to adapt the experiment for the $^{3}{\\rm He}$ data taking. Expected sensitivities on the coupling constant of axions to photons will be given for the recent $^{3}{\\rm He}$ run just started in March 2008.

CAST Collaboration; E. Arik; S. Aune; D. Autiero; K. Barth; A. Belov; B. BeltrŠn; S. Borghi; F. S. Boydag; H. Bršuninger; G. Cantatore; J. M. Carmona; S. A. Cetin; J. I. Collar; T. Dafni; M. Davenport; L. Di Lella; O. B. Dogan; C. Eleftheriadis; N. Elias; G. Fanourakis; E. Ferrer-Ribas; H. Fischer; J. Franz; J. GalŠn; E. Gazis; T. Geralis; I. Giomataris; S. Gninenko; H. Gůmez; M. Hasinoff; F. H. Heinsius; I. Hikmet; D. H. H. Hoffmann; I. G. Irastorza; J. Jacoby; K. Jakov?i?; D. Kang; T. Karageorgopoulou; M. Karuza; K. KŲnigsmann; R. Kotthaus; M. Kr?mar; K. Kousouris; M. Kuster; B. Laki?; C. Lasseur; A. Liolios; A. Ljubi?i?; V. Lozza; G. Lutz; G. Luzůn; D. Miller; J. Morales; T. Niinikoski; A. Nordt; A. Ortiz; T. Papaevangelou; M. J. Pivovaroff; A. Placci; G. Raiteri; G. Raffelt; H. Riege; A. RodrŪguez; J. Ruz; I. Savvidis; Y. Semertzidis; P. Serpico; S. K. Solanki; R. Soufli; L. Stewart; M. Tsagri; K. van Bibber; J5D. Villar; J. Vogel; L. Walckiers; K. Zioutas

2008-10-10T23:59:59.000Z

69

Volatile Species Retention During Metallic Fuel Casting  

SciTech Connect (OSTI)

Metallic nuclear fuels are candidate transmutation fuel forms for advanced fuel cycles. Through the operation of the Experimental Breeder Reactor II metallic nuclear fuels have been shown to be robust and easily manufactured. However, concerns have been raised concerning loss of americium during the casting process because of its high vapor pressure. In order to address these concerns a gaseous diffusion model was developed and a series of experiments using both manganese and samarium as surrogates for americium were conducted. The modeling results showed that volatility losses can be controlled to essentially no losses with a modest overpressure. Experimental results also showed volatile species retention down to no detectable losses through overpressure, although the loss values varied from the model results the same trend was seen. Bases on these results it is very probably that americium losses through volatility can be controlled to no detectable losses through application of a modest overpressure during casting.

Randall S. Fielding; Douglas L. Proter

2013-10-01T23:59:59.000Z

70

The Feasibility of Casting Sculpture in Kirksite  

E-Print Network [OSTI]

given to the various zinc die-casting alloys. Kirksite consists of 91 percent zinc, 4 percent aluminum, 4 percent copper, and 1 percent magnesium. It is a bluish- white metal commonly used commercially by the automobile industry in the production... of zinc extant is an idol found in a prehistoric Dacian settle- ment in Transylvania. This idol was alloyed with lead and had a I physical makeup resembling zinkstuhl, a modern zinc alloy. The ancients probably were unacquainted with zinc; however...

Fox, Lewis Howard

1968-01-01T23:59:59.000Z

71

Seal welded cast iron nuclear waste container  

DOE Patents [OSTI]

This invention identifies methods and articles designed to circumvent metallurgical problems associated with hermetically closing an all cast iron nuclear waste package by welding. It involves welding nickel-carbon alloy inserts which are bonded to the mating plug and main body components of the package. The welding inserts might be bonded in place during casting of the package components. When the waste package closure weld is made, the most severe thermal effects of the process are restricted to the nickel-carbon insert material which is far better able to accommodate them than is cast iron. Use of nickel-carbon weld inserts should eliminate any need for pre-weld and post-weld heat treatments which are a problem to apply to nuclear waste packages. Although the waste package closure weld approach described results in a dissimilar metal combination, the relative surface area of nickel-to-iron, their electrochemical relationship, and the presence of graphite in both materials will act to prevent any galvanic corrosion problem.

Filippi, Arthur M. (Pittsburgh, PA); Sprecace, Richard P. (Murrysville, PA)

1987-01-01T23:59:59.000Z

72

Cast Stone Formulation At Higher Sodium Concentrations  

SciTech Connect (OSTI)

A low temperature waste form known as Cast Stone is being considered to provide supplemental Low Activity Waste (LAW) immobilization capacity for the Hanford site. Formulation of Cast Stone at high sodium concentrations is of interest since a significant reduction in the necessary volume of Cast Stone and subsequent disposal costs could be achieved if an acceptable waste form can be produced with a high sodium molarity salt solution combined with a high water to premix (or dry blend) ratio. The objectives of this study were to evaluate the factors involved with increasing the sodium concentration in Cast Stone, including production and performance properties and the retention and release of specific components of interest. Three factors were identified for the experimental matrix: the concentration of sodium in the simulated salt solution, the water to premix ratio, and the blast furnace slag portion of the premix. The salt solution simulants used in this study were formulated to represent the overall average waste composition. The cement, blast furnace slag, and fly ash were sourced from a supplier in the Hanford area in order to be representative. The test mixes were prepared in the laboratory and fresh properties were measured. Fresh density increased with increasing sodium molarity and with decreasing water to premix ratio, as expected given the individual densities of these components. Rheology measurements showed that all of the test mixes produced very fluid slurries. The fresh density and rheology data are of potential value in designing a future Cast Stone production facility. Standing water and density gradient testing showed that settling is not of particular concern for the high sodium compositions studied. Heat of hydration measurements may provide some insight into the reactions that occur within the test mixes, which may in turn be related to the properties and performance of the waste form. These measurements showed that increased sodium concentration in the salt solution reduced the time to peak heat flow, and reducing the amount of slag in the premix increased the time to peak heat flow. These observations may help to describe some of the cured properties of the samples, in particular the differences in compressive strength observed after 28 and 90 days of curing. Samples were cured for at least 28 days at ambient temperature in the laboratory prior to cured properties analyses. The low activity waste form for disposal at the Hanford Site is required to have a compressive strength of at least 500 psi. After 28 days of curing, several of the test mixes had mean compressive strengths that were below the 500 psi requirement. Higher sodium concentrations and higher water to premix ratios led to reduced compressive strength. Higher fly ash concentrations decreased the compressive strength after 28 days of curing. This may be explained in that the cementitious phases matured more quickly in the mixes with higher concentrations of slag, as evidenced by the data for the time to peak heat generation. All of the test mixes exhibited higher mean compressive strengths after 90 days of curing, with only one composition having a mean compressive strength of less than 500 psi. Leachability indices were determined for the test mixes for contaminants of interest. The leaching performance of the mixes evaluated in this study was not particularly sensitive to the factors used in the experimental design. This may be beneficial in demonstrating that the performance of the waste form is robust with respect to changes in the mix composition. The results of this study demonstrate the potential to achieve significantly higher waste loadings in Cast Stone and other low temperature, cementitious waste forms. Additional work is needed to elucidate the hydration mechanisms occurring in Cast Stone formulated with highly concentrated salt solutions since these reactions are responsible for determining the performance of the cured waste form. The thermal analyses completed in this study provide some preliminary insight, although the l

Fox, K. M.; Roberts, K. A.; Edwards, T. B.

2014-02-28T23:59:59.000Z

73

Method and mold for casting thin metal objects  

SciTech Connect (OSTI)

Provided herein are various embodiments of systems for casting thin metal plates and sheets. Typical embodiments include layers of mold cavities that are oriented vertically for casting the metal plates. In some embodiments, the mold cavities include a beveled edge such that the plates that are cast have a beveled edge. In some embodiments, the mold cavities are filled with a molten metal through an open horizontal edge of the cavity. In some embodiments, the mold cavities are filled through one or more vertical feed orifices. Further disclosed are methods for forming a thin cast metal plate or sheet where the thickness of the cast part is in a range from 0.005 inches to 0.2 inches, and the surface area of the cast part is in a range from 16 square inches to 144 square inches.

Pehrson, Brandon P; Moore, Alan F

2014-04-29T23:59:59.000Z

74

Laser:powder:substrate interactions in laser cladding and casting  

Science Journals Connector (OSTI)

Laser cladding and the recently developed laser casting technique are similar in their physical mechanisms. A transition from cladding to casting and vice versa can be achieved by proper control of the process parameters, both for preplaced and blown powder. In the present work, the preplaced powder technique is studied at a fundamental level. Its physical nature is responsible for a large operating window of dilution free cladding on the one hand and bond free casting on the other.

A.F.H. Kaplan; John Powell; Hans Gedda

2010-01-01T23:59:59.000Z

75

Virtual Aluminum Castings An Industrial Application of Integrated...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Virtual Aluminum Castings An Industrial Application of Integrated Computational Materials Engineering Home Author: J. Allison, M. Li, C. Wolverton, X. Su Year: 2006 Abstract: The...

76

Development of Integrated Die Casting Process for Large Thin...  

Broader source: Energy.gov (indexed) [DOE]

Integrated Die Casting Process for Large Thin-Wall Magnesium Applications Enabling Production of Lightweight Magnesium Parts for Near-Term Automotive Applications, April 2013...

77

Advanced precision expendable pattern casting technology. 1994 Summary report  

SciTech Connect (OSTI)

Casting technology is described. The following areas are reported on: precision pattern production; pattern coating; sand fill and compaction; pattern gating; mechanical properties; and technology transfer efforts.

NONE

1995-05-01T23:59:59.000Z

78

Continuation of Crosscutting Technology Development at Cast  

SciTech Connect (OSTI)

This Final Technical Report describes progress made on the sub-projects awarded in the Cooperative Agreement DE-FC26-05NT42457: Continuation of Crosscutting Technology Development at Center for Advanced Separation Technologies (CAST). The final reports for each sub-project are attached in the appendix. Much of the research to be conducted with Cooperative Agreement funds will be longer-term, high-risk, basic research and will be carried out in five broad areas: a) Solid-solid separation b) Solid-liquid separation c) Chemical/Biological Extraction d) Modeling and Control, and e) Environmental Control.

Yoon, Roe-Hoan

2012-03-31T23:59:59.000Z

79

Measurements of the soot emissions and engine operat-ing parameters from a diesel engine during transient op-  

E-Print Network [OSTI]

ABSTRACT Measurements of the soot emissions and engine operat- ing parameters from a diesel engine and are the subject of future research. INTRODUCTION Soot emissions from diesel engines are well known to have gov- erning the emission of particles from diesel engines are becoming ever more stringent. The soot

Daraio, Chiara

80

Like many techies, I've been wonder-ing what changes we'll see in the  

E-Print Network [OSTI]

Like many techies, I've been wonder- ing what changes we'll see in the Internet in the coming years. In doing so, I look at the Internet in the broad sense, at the level of applications and uses, but without conceptualization of the Internet is based on the interactions--between people and between people and computers

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

EXCELLENTIA CoLumbIA ENgINEErINg66 echanical engineers think about the design, construction, material proper-  

E-Print Network [OSTI]

responsibility for understanding how engines work, how buildings can be more efficiently built, and howHEALTH EXCELLENTIA CoLumbIA ENgINEErINg66 M echanical engineers think about the design the environment affects bridge architecture. They also apply their knowledge to the workings of the human body

Hone, James

82

ION CYCLOTRON H EAT ING IN A TORO IDAL OCTUPOLE J. D. Barter and J. C. Sprott  

E-Print Network [OSTI]

of the Wisonsin Supported Toroidal Octupole has been used to heat ions at the cyclotron frequency. Fig. 1 shows electric field in the toroidal direction appropriate to cyclotron heating in the poloidal octupole fieldION CYCLOTRON H EAT ING IN A TORO IDAL OCTUPOLE J. D. Barter and J. C. Sprott November 1974 Plasma

Sprott, Julien Clinton

83

The solar eclipse is indeed a momentous, or at least visually entertain-ing and curious happening in astrology.  

E-Print Network [OSTI]

The solar eclipse is indeed a momentous, or at least visually entertain- ing and curious happening recordings of lunar and solar eclipses. 2 #12;The Dresden Codex was for the Mayans a way to predict eclipses likely that Martin Meinshausen proposed that this data was related to the timing of series of solar

Little, John B.

84

Material accountancy for metallic fuel pin casting  

SciTech Connect (OSTI)

The operation of the Fuel Conditioning Facility (FCF) is based on the electrometallurgical processing of spent metallic reactor fuel. The pin casting operation, although only one of several operations in FCF, was the first to be on-line. As such, it has served to demonstrate the material accountancy system in many of its facets. This paper details, for the operation of the pin casting process with depleted uranium, the interaction between the mass tracking system (MTG) and some of the ancillary computer codes which generate pertinent information for operations and material accountancy. It is necessary to distinguish between two types of material balance calculations -- closeout for operations and material accountancy for safeguards. The two have much in common, for example, the mass tracking system database and the calculation of an inventory difference, but, in general, are not congruent with regard to balance period and balance spatial domain. Moreover, the objective, assessment, and reporting requirements of the calculated inventory difference are very different in the two cases.

Bucher, R.G.; Orechwa, Y.; Beitel, J.C.

1995-08-01T23:59:59.000Z

85

Brief paper: Adaptive robust stabilization of continuous casting  

Science Journals Connector (OSTI)

Continuous casting processes can suffer from a disturbance effect, called ''dynamic bulging'', that causes large oscillations of the mold level, significantly reduces the quality of the final product and may cause instability and damages. In this paper ... Keywords: Adaptive systems, Continuous casting, Disturbance rejection, Stability of linear plants, Time-delay systems

Christian FurtmŁller; Patrizio Colaneri; Luigi del Re

2012-01-01T23:59:59.000Z

86

Automatic 3D modeling of palatal plaster casts Marco Andreetto  

E-Print Network [OSTI]

Automatic 3D modeling of palatal plaster casts Marco Andreetto Dept. of Information Engineer-form surfaces of anatomi- cal interest. 1. Introduction Plaster models derived from palate's impressions. A data-base with the 3D models of the plaster casts, which could be called a "virtual gypsotheque", can

Abu-Mostafa, Yaser S.

87

A boosting discriminative model for moving cast shadow detection  

Science Journals Connector (OSTI)

Moving cast shadow causes serious problem while segmenting and extracting foreground from image sequences, due to the misclassification of moving shadow as foreground. This paper proposes a boosting discriminative model for moving cast shadow detection. ... Keywords: boosting, discriminative random fields, graph cut, shadow detection

Yufei Zha; Ying Chu; Duyan Bi

2007-08-01T23:59:59.000Z

88

Manufacturers Saving with Lost Foam Metal Casting | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Manufacturers Saving with Lost Foam Metal Casting Manufacturers Saving with Lost Foam Metal Casting Manufacturers Saving with Lost Foam Metal Casting December 18, 2009 - 2:43pm Addthis Eric Barendsen Energy Technology Program Specialist, Office of Energy Efficiency and Renewable Energy What are the key facts? Metal casting was identified as one of the top 10 energy users in manufacturing. The technology represents a 20- to 25-percent reduction in production costs and uses 7 percent fewer materials than traditional processes. One example of this technology is being used by General Motors to make lightweight engine blocks for the fuel-efficient vehicles they manufacture. A government-funded effort to support development of foam metal casting helped reduce an estimated 9.4 million tons of solid waste between 1994 and 2005, which saved industry an estimated 3 trillion Btu.

89

Grain Refinement of Permanent Mold Cast Copper Base Alloys  

SciTech Connect (OSTI)

Grain refinement is a well established process for many cast and wrought alloys. The mechanical properties of various alloys could be enhanced by reducing the grain size. Refinement is also known to improve casting characteristics such as fluidity and hot tearing. Grain refinement of copper-base alloys is not widely used, especially in sand casting process. However, in permanent mold casting of copper alloys it is now common to use grain refinement to counteract the problem of severe hot tearing which also improves the pressure tightness of plumbing components. The mechanism of grain refinement in copper-base alloys is not well understood. The issues to be studied include the effect of minor alloy additions on the microstructure, their interaction with the grain refiner, effect of cooling rate, and loss of grain refinement (fading). In this investigation, efforts were made to explore and understand grain refinement of copper alloys, especially in permanent mold casting conditions.

M.Sadayappan; J.P.Thomson; M.Elboujdaini; G.Ping Gu; M. Sahoo

2005-04-01T23:59:59.000Z

90

Complex foamed aluminum parts as permanent cores in aluminum castings  

SciTech Connect (OSTI)

The feasibility of complex shaped aluminum foam parts as permanent cores in aluminum castings has been investigated. The foamed samples were prepared by injection of the foam into sand molds. It turned out that sound castings can be produced if the foam core is properly preheated and/or surface treated before casting. The effect of the foam core on the performance of the casting was evaluated by in compression testing and by measuring structural damping. The gain in the related properties turned out to be much higher than the weight increase of the casting due to the presence of the core. The weight increase may be partially offset through a reduction of the wall-thickness of the shell.

Simancik, F. [Inst. of Materials and Machine Mechanics, Bratislava (Slovakia); Schoerghuber, F. [Illichmann GmbH, Altmuenster (Austria)

1998-12-31T23:59:59.000Z

91

The Influence of Casting Conditions on the Microstructure of As-Cast U-10Mo Alloys: Characterization of the Casting Process Baseline  

SciTech Connect (OSTI)

Sections of eight plate castings of uranium alloyed with 10 wt% molybdenum (U-10Mo) were sent from Y-12 to the Pacific Northwest National Laboratory (PNNL) for microstructural characterization. This report summarizes the results from this study.

Nyberg, Eric A.; Joshi, Vineet V.; Lavender, Curt A.; Paxton, Dean M.; Burkes, Douglas

2013-12-13T23:59:59.000Z

92

E-Print Network 3.0 - astrophysicists cast doubt Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

STRESSES DURING CASTING OF BINARY MAGNESIUM-ALUMINUM ALLOYS M.G. Pokorny1 , C... , Geesthacht, Germany Keywords: Magnesium Alloys, Casting, Stress Simulation Abstract A visco...

93

E-Print Network 3.0 - alloy dental castings Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

STRESSES DURING CASTING OF BINARY MAGNESIUM-ALUMINUM ALLOYS M.G. Pokorny1 , C... , Geesthacht, Germany Keywords: Magnesium Alloys, Casting, Stress Simulation Abstract A visco......

94

Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical Investigation Solar Cells: Spin-Cast Bulk Heterojunction Solar Cells: A Dynamical Investigation Print Wednesday,...

95

Method of casting silicon into thin sheets  

DOE Patents [OSTI]

Silicon (Si) is cast into thin shapes within a flat-bottomed graphite crucible by providing a melt of molten Si along with a relatively small amount of a molten salt, preferably NaF. The Si in the resulting melt forms a spherical pool which sinks into and is wetted by the molten salt. Under these conditions the Si will not react with any graphite to form SiC. The melt in the crucible is pressed to the desired thinness with a graphite tool at which point the tool is held until the mass in the crucible has been cooled to temperatures below the Si melting point, at which point the Si shape can be removed.

Sanjurjo, Angel (San Jose, CA); Rowcliffe, David J. (Los Altos, CA); Bartlett, Robert W. (Tucson, AZ)

1982-10-26T23:59:59.000Z

96

Development of a thin steel strip casting process. Final report  

SciTech Connect (OSTI)

This is a comprehensive effort to develop direct strip casting to the point where a pilot scale program for casting carbon steel strip could be initiated. All important aspects of the technology were being investigated, however the program was terminated early due to a change in the business strategy of the primary contractor, Armco Inc. (focus to be directed at specialty steels, not low carbon steel). At termination, the project was on target on all milestones and under budget. Major part was casting of strip at the experiment casting facility. A new caster, capable of producing direct cast strip of up to 12 in. wide in heats of 1000 and 3000 lb, was used. A total of 81 1000-1200 lb heats were cast as well as one test heat of 3000 lb. Most produced strip of from 0.016 to 0.085 in. thick. Process reliability was excellent for short casting times; quality was generally poor from modern hot strip mill standards, but the practices necessary for good surface quality were identified.

Williams, R.S.

1994-04-01T23:59:59.000Z

97

Hanford's Simulated Low Activity Waste Cast Stone Processing  

SciTech Connect (OSTI)

Cast Stone is undergoing evaluation as the supplemental treatment technology for Hanfordís (Washington) high activity waste (HAW) and low activity waste (LAW). This report will only cover the LAW Cast Stone. The programs used for this simulated Cast Stone were gradient density change, compressive strength, and salt waste form phase identification. Gradient density changes show a favorable outcome by showing uniformity even though it was hypothesized differently. Compressive strength exceeded the minimum strength required by Hanford and greater compressive strength increase seen between the uses of different salt solution The salt waste form phase is still an ongoing process as this time and could not be concluded.

Kim, Young

2013-08-20T23:59:59.000Z

98

Report: EM Management Analysis and Strategic Vision-Casting  

Broader source: Energy.gov (indexed) [DOE]

Management Analysis and Strategic Vision-Casting Management Analysis and Strategic Vision-Casting September 25, 2008 Submitted by the EMAB Strategic Vision-Casting Subcommittee Background: In the course of developing the Environmental Management Advisory Board's (EMAB) fiscal year (FY) 2008 review topics, EM leadership and Board members recognized a need to re-examine the program's strategy and vision for the future, in order to better position EM and continue its momentum for clean-up and closure. This endeavor will also ensure that the next administration and current stakeholders are aligned with EM's proposed priorities, funding requirements, and commitments for 2009 and beyond. Consequently, the Board formed a Strategic Vision-Casting Subcommittee that was charged with the assignment of reviewing EM's current and past missions and strategic visions to assess

99

Cast Stainless Steel Aging Research Plan | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Cast Stainless Steel Aging Research Plan Cast Stainless Steel Aging Research Plan Cast Stainless Steel Aging Research Plan This work plan proposes to build a systematic knowledge base for the thermal aging behavior of cast stainless steels (CASSs) within a limited time of five years. The final output of execution of the plan is expected to provide conclusive predictions for the integrity of the CASS components of LWR power plants during the extended service life up to and beyond 60 years. Mechanical and microstructural data obtained through accelerated aging experiment and computational simulation will be the key input for the prediction of CASS behaviors and for the integrity analyses for various CASS components. While the accelerated aging experiment and computational simulation results will comprise the main components of the knowledge base

100

Kin selection, genomics and caste-antagonistic pleiotropy  

Science Journals Connector (OSTI)

...Special feature 1001 14 70 Kin selection, genomics and caste-antagonistic pleiotropy David...evolution of social behaviours. The genomics revolution now provides the opportunity...Outlook: kin selection and social insect genomics The revolution in social insect genomics...

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Mold, flow, and economic considerations in high temperature precision casting  

E-Print Network [OSTI]

Casting high temperature alloys that solidify through a noticeable two phase region, specifically platinum-ruthenium alloys, is a particularly challenging task due to their high melting temperature and this necessitates ...

Humbert, Matthew S

2013-01-01T23:59:59.000Z

102

An Energy Savings Model for the Heat Treatment of Castings  

SciTech Connect (OSTI)

An integrated system of software, databases, and design rules have been developed, verified, and to be marketed to enable quantitative prediction and optimization of the heat treatment of aluminum castings to increase quality, increase productivity, reduce heat treatment cycle times and reduce energy consumption. The software predicts the thermal cycle in critical locations of individual components in a furnace, the evolution of microstructure, and the attainment of properties in heat treatable aluminum alloy castings. The model takes into account the prior casting process and the specific composition of the component. The heat treatment simulation modules can be used in conjunction with software packages for simulation of the casting process. The system is built upon a quantitative understanding of the kinetics of microstructure evolution in complex multicomponent alloys, on a quantitative understanding of the interdependence of microstructure and properties, on validated kinetic and thermodynamic databases, and validated quantitative models.

Y. Rong; R. Sisson; J. Morral; H. Brody

2006-12-31T23:59:59.000Z

103

Melt-solid interactions in laser cladding and laser casting  

Science Journals Connector (OSTI)

Experimental data in conjunction with mathematical models are used to explain various aspects of laser casting and laser cladding by the preplaced powder method. For increasing ... the powder bed is analyzed to i...

H. Gedda; A. Kaplan; J. Powell

2005-10-01T23:59:59.000Z

104

Process and apparatus for casting multiple silicon wafer articles  

DOE Patents [OSTI]

Method and apparatus of casting silicon produced by the reaction between SiF.sub.4 and an alkaline earth metal into thin wafer-shaped articles suitable for solar cell fabrication.

Nanis, Leonard (Palo Alto, CA)

1992-05-05T23:59:59.000Z

105

ITP Metal Casting: Energy Use in Selected Metalcasting Facilities- 2003  

Broader source: Energy.gov [DOE]

This report represents an energy benchmark for various metalcasting processes. It describes process flows and energy use by fuel type and processes for selected casting operations. It also provides recommendations for improving energy efficiency in casti

106

Marry for What? Caste and Mate Selection in Modern India  

E-Print Network [OSTI]

This paper analyzes how preferences for a noneconomic characteristic (e.g., caste) can affect equilibrium patterns of matching, and empirically evaluates this in the context of middle-class Indian arranged marriages. We ...

Banerjee, Abhijit

107

Cast Metal Coalition Research and Development Closeout Report  

SciTech Connect (OSTI)

The Cast Metal Coalition, composed of more than 22 research providers and universities and 149 industrial partners, has completed a four-year research and development partnership with the Department of Energy. This report provides brief summaries of the 29 projects performed by the Coalition. These projects generated valuable information in such aspects of the metals industry as process prediction technologies, quality control, improved alloys, product machinability, and casting process improvements.

Allen, D.

2000-08-01T23:59:59.000Z

108

Methods for manufacturing monocrystalline or near-monocrystalline cast materials  

DOE Patents [OSTI]

Methods are provided for casting one or more of a semiconductor, an oxide, and an intermetallic material. With such methods, a cast body of a monocrystalline form of the one or more of a semiconductor, an oxide, and an intermetallic material may be formed that is free of, or substantially free of, radially-distributed impurities and defects and having at least two dimensions that are each at least about 35 cm.

Stoddard, Nathan G

2014-04-29T23:59:59.000Z

109

Method of reducing the green density of a slip cast article  

DOE Patents [OSTI]

The method disclosed in this specification is one of reducing the green density of an article cast in a slip casting operation. The article is cast from a casting slip containing silicon metal particles, yttrium containing particles, and a small amount of a fluoride salt which is effective to suppress flocculation of the silicon metal particles by y.sup.+3 ions derived from the yttrium containing particles. The method is characterized by the following step. A small amount of compound which produces a cation which will partly flocculate the particles of silicon metal is added to the casting slip. The small amount of this compound is added so that when the casting slip is slip cast into a casting mold, the partly flocculated particles of silicon will interrupt an otherwise orderly packing of the particles of silicon and particles of yttrium. In this manner, the green density of the slip cast article is reduced and the article may be more easily nitrided.

Mangels, John A. (Flat Rock, MI); Dickie, Ray A. (Birmingham, MI)

1985-01-01T23:59:59.000Z

110

Twin-belt continuous caster with containment and cooling of the exiting cast product for enabling high-speed casting of molten-center product  

DOE Patents [OSTI]

In continuously casting molten metal into cast product by a twin-belt machine, it is desirable to achieve dramatic increases in speed (linear feet per minute) at which cast product exits the machine, particularly in installations where steel cast product is intended to feed a downstream regular rolling mill (as distinct from a planetary mill) operating in tandem with the twin-belt caster. Such high-speed casting produces product with a relatively thin shell and molten interior, and the shell tends to bulge outwardly due to metallostatic head pressure of the molten center. A number of cooperative features enable high-speed, twin-belt casting: (1) Each casting belt is slidably supported adjacent to the caster exit pulley for bulge control and enhanced cooling of cast product. (2) Lateral skew steering of each belt provides an effective increase in moving mold length plus a continuity of heat transfer not obtained with prior art belt steering apparatus. (3) The exiting slab is contained and supported downstream from the casting machine to prevent bulging of the shell of the cast product, and (4) spray cooling is incorporated in the exit containment apparatus for secondary cooling of cast product.

Dykes, Charles D. (303 Shore Rd., Milton, VT); Daniel, Sabah S. (303 Shore Rd., Pittsburgh, PA); Wood, J. F. Barry (303 Shore Rd., Burlington, VT 05401)

1990-02-20T23:59:59.000Z

111

Effect of flask vibration time on casting integrity, Surface Penetration and Coating Inclusion in lost foam casting of Al-Si Alloy  

SciTech Connect (OSTI)

The paper presents the result of an experimental investigation conducted on medium aluminum silicon alloy casting- LM6, using no-vacuum assisted lost foam casting process. The study is directed for establishing the relationship between the flask vibrations times developed for molded sample on the casting integrity, surface penetration and coating inclusion defects of the casting. Four different flask vibration times namely 180, 120, 90 and 60 sec. were investigated. The casting integrity was investigated in terms of fulfilling in all portions and edges. The surface penetration was measured using optical microscope whilst image analyzer was used to quantify the percentage of coating inclusion in the casting. The results show that vibration time has significant influence on the fulfilling as well as the internal integrity of the lost foam casting. It was found that the lower vibration time produced comparatively sound casing.

Karimian, Majid [Dept. of Materials Engineering, Dept. of Mechanical Engineering, Khomeinishahr branch, Islamic Azad University-(Khomeinishahr- Isfahan) (Iran, Islamic Republic of); Idris, M. H. [Dept. of Manufacturing and Industrial Engineering, Faculty of Mechanical Engineering, University Technology Malaysia, Johor Bauru (Malaysia); Ourdjini, A.; Muthu, Kali [Dept. of Materials Engineering, Khomeinishahr branch, Islamic Azad University-(Khomeinishahr- Isfahan) (Iran, Islamic Republic of)

2011-01-17T23:59:59.000Z

112

Casting a Light on California | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Casting a Light on California Casting a Light on California Casting a Light on California October 28, 2010 - 4:00pm Addthis John Schueler John Schueler Former New Media Specialist, Office of Public Affairs What does this project do? Combined, the six projects will produce 2,837 megawatts of energy, enough to power 851,500 to 2.1 million homes, as well as create 3,700 new construction jobs and more than six hundred permanent plant operations positions. Yesterday, Secretary Salazar joined Gov. Arnold Schwarzenegger to celebrate the groundbreaking of the Ivanpah Solar Electric Generating System, an innovative "power tower" project in San Bernardino County, California. Located in Southern California's Mojave Desert, Ivanpah will use solar "power tower" technology to produce up to 370 megawatts of clean,

113

Casting a Light on California | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Casting a Light on California Casting a Light on California Casting a Light on California October 28, 2010 - 4:00pm Addthis John Schueler John Schueler Former New Media Specialist, Office of Public Affairs What does this project do? Combined, the six projects will produce 2,837 megawatts of energy, enough to power 851,500 to 2.1 million homes, as well as create 3,700 new construction jobs and more than six hundred permanent plant operations positions. Yesterday, Secretary Salazar joined Gov. Arnold Schwarzenegger to celebrate the groundbreaking of the Ivanpah Solar Electric Generating System, an innovative "power tower" project in San Bernardino County, California. Located in Southern California's Mojave Desert, Ivanpah will use solar "power tower" technology to produce up to 370 megawatts of clean,

114

Thermal analysis of cast-resin dry-type transformers  

Science Journals Connector (OSTI)

Non-flammable characteristic of dry-type cast-resin transformers make them suitable for residential and hospital usages. However, because of resinís property, thermal behavior of these transformers is undesirable, so it is important to analyze their thermal behavior. In this paper temperature distribution of cast-resin transformers is modeled by two different approaches. A FEM-based model which uses experimental-analytical formula for airĖcooling vertical ducts and a 3D finite volume based CFD model which is established in the ANSYS CFX software. In order to evaluate and compare the models, the simulation results were compared with the experimental data measured from an 800†kVA transformer. Finally, the influences of some construction parameters and environmental conditions on temperature distribution of cast-resin transformers were discussed.

M. Eslamian; B. Vahidi; A. Eslamian

2011-01-01T23:59:59.000Z

115

Tape-cast sensors and method of making  

DOE Patents [OSTI]

A method of making electrochemical sensors in which an electrolyte material is cast into a tape. Prefabricated electrodes are then partially embedded between two wet layers of the electrolyte tape to form a green sensor, and the green sensor is then heated to sinter the electrolyte tape around the electrodes. The resulting sensors can be used in applications such as, but not limited to, combustion control, environmental monitoring, and explosive detection. A electrochemical sensor formed by the tape-casting method is also disclosed.

Mukundan, Rangachary (Santa Fe, NM); Brosha, Eric L. (Los Alamos, NM); Garzon, Fernando H. (Santa Fe, NM)

2009-08-18T23:59:59.000Z

116

Plaster Casts at Berkeley. Collections of the Hearst Museum of Anthropology & Department of Classics at UC Berkeley. An Exhibition of Rare Plaster Casts of Ancient Greek and Roman Sculpture. 2nd edition 2005, pp. vi + 76 + ii  

E-Print Network [OSTI]

Britain: An Oxford Story of Plaster Casts from the Antique (sculptor Lysistratos took plaster impressions not only fromPlaster Casts at Berkeley COLLECTIONS OF THE HEARST MUSEUM

Miller, Stephen G.

2005-01-01T23:59:59.000Z

117

Improving the manufacturing yield of investment cast turbine blades through robust design  

E-Print Network [OSTI]

The manufacturing of turbine blades is often outsourced to investment casting foundries by aerospace companies that design and build jet engines. Aerospace companies have found that casting defects are an important cost ...

Margetts, David (David Lawrence)

2008-01-01T23:59:59.000Z

118

Developments of cast superalloys and technology for gas turbine blades in BIAM  

Science Journals Connector (OSTI)

Since 1960's many important subjects relating to cast turbine blades including alloy developments, directional solidification (DS) and single crystal (SC) technique and casting technology for blades have been ...

R. Z. Chen

1995-09-01T23:59:59.000Z

119

Cast Alloys for Advanced Ultra Supercritical Steam Turbines  

SciTech Connect (OSTI)

The proposed steam inlet temperature in the Advanced Ultra Supercritical (A-USC) steam turbine is high enough (760 įC) that traditional turbine casing and valve body materials such as ferritic/martensitic steels will not suffice due to temperature limitations of this class of materials. Cast versions of several traditionally wrought Ni-based superalloys were evaluated for use as casing or valve components for the next generation of industrial steam turbines. The full size castings are substantial: 2-5,000 kg each half and on the order of 100 cm thick. Experimental castings were quite a bit smaller, but section size was retained and cooling rate controlled to produce equivalent microstructures. A multi-step homogenization heat treatment was developed to better deploy the alloy constituents. The most successful of these cast alloys in terms of creep strength (Haynes 263, Haynes 282, and Nimonic 105) were subsequently evaluated by characterizing their microstructure as well as their steam oxidation resistance (at 760 and 800 įC).

G. R. Holcomb, P. Wang, P. D. Jablonski, and J. A. Hawk,

2010-05-01T23:59:59.000Z

120

Valid from Michaelmas 2009 1 2P3 Casting  

E-Print Network [OSTI]

between microstructure and a phase diagram Practical Skills 1. Melting and casting methods 2 handled tongs. 2. Remove the crucibles from the furnace after 1hour and stir with a graphite rod. Replace there is no possibility for any materials to be set alight by the molten alloy or any chance of contact with personnel. 5

Paxton, Anthony T.

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

SIMULATION OF POROSITY AND HOT TEARS IN A SQUEEZE CAST MAGNESIUM CONTROL ARM  

E-Print Network [OSTI]

SIMULATION OF POROSITY AND HOT TEARS IN A SQUEEZE CAST MAGNESIUM CONTROL ARM K.D. Carlson1 , C: Magnesium Alloys, Casting, Shrinkage Porosity, Hot Tears, Modeling Abstract Simulations are performed and hot tears in squeeze casting of magnesium alloys. Introduction Both shrinkage porosity and hot tears

Beckermann, Christoph

122

CYRANO CAST LIST: All Cast members need to be measured in the costume shop before semester break. Please  

E-Print Network [OSTI]

/s CHERESTANI); Katherine Schooler FULMINA; Jenna Jo Pawlicki TERRAMOTA; Marley Boone Peter Pan Cast List PETER Schenfisch MICHAEL: Forest Colson MR. DARLING: Avery Bell MRS. DARLING/ CAPTAIN HOOK: Jacqueline Wheeler SMEE/Ensemble Michael Barbour Launce/Ensemble Jacqueline Wheeler Lucetta/Ensemble Sarah Matthews Duke/Ensemble Jeremy

Liu, Taosheng

123

METALLURGICAL EVALUATION OF CAST DUPLEX STAINLESS STEELS AND THEIR WELDMENTS  

Office of Scientific and Technical Information (OSTI)

FINAL REPORT FINAL REPORT VOLUME 1 METALLURGICAL EVALUATION OF CAST DUPLEX STAINLESS STEELS AND THEIR WELDMENTS SUBMITTED TO U. S. DEPARTMENT OF ENERGY Award Number - DE-FC36-00 ID13975 OCTOBER 1, 2000 - SEPTEMBER 30, 2005 SONGQING WEN CARL D. LUNDIN GREG BATTEN MATERIALS JOINING GROUP MATERIALS SCIENCE AND ENGINEERING THE UNIVERSITY OF TENNESSEE, KNOXVILLE CARL D. LUNDIN PROFESSOR OF METALLURGY MATERIALS JOINING GROUP MATERIALS SCIENCE AND ENGINEERING THE UNIVERSITY OF TENNESSEE KNOXVILLE 37996-2200 TELEPHONE (865) 974-5310 FAX (865) 974-0880 lundin@utk.edu This is Volume 1of 5 of the final report for The Department of Energy Grant # DE-FC36-00 ID13975 entitled "Behavior of Duplex Stainless Steel Castings." ii FOREWARD

124

Selecting copper and copper alloys; Part 2: Cast products  

SciTech Connect (OSTI)

This article provides an introduction to the properties, characteristics, and applications of cast coppers and copper alloys. An overview of alloy families is presented since it is impractical to describe all 130 standard grades in detail. However, additional technical information is readily available from the Copper Development Assn. Inc. (CDA) and the resources listed in the references and bibliography at the end of the article. Copper casting alloys are primarily selected for either their corrosion resistance, or their combination of corrosion resistance and mechanical properties. The materials also feature good castability, high machinability, and, compared with other corrosion-resistant alloys, reasonable cost. Additional benefits include biofouling resistance--important in marine applications--and a spectrum of attractive colors. Many of the alloys also have favorable tribological properties, which explains their widespread use for sleeve bearings, wear plates, gears, and other wear-prone components.

Peters, D.T. (Copper Development Association Inc., New York, NY (United States)); Kundig, K.J.A. (Kundig (Konrad J.A.), Randolph, NJ (United States))

1994-06-01T23:59:59.000Z

125

Laser-Ultrasonic Inspection of MG/AL Castings  

SciTech Connect (OSTI)

Laser-ultrasonics is used to assess the metallurgical bond between Mg/Al materials in die-cast Magnesium/Aluminum composite. The acoustic impedances of Mg, Al and air are such that the amplitude of ultrasonic echoes reflected back from a void is many times larger than the amplitude of those reflected back from a well-bonded interface. In addition, the polarity of echoes from a void is inverted compared to that from a well-bonded interface. Laser-ultrasonic F-SAFT is also used for imaging tilted Mg/Al interfaces. Experimental setup, signal processing and results for detecting voids in the Mg/Al interface of cast parts are presented.

Blouin, Alain; Levesque, Daniel; Monchalin, Jean-Pierre [Industrial Materials Institute, National Research Council Canada, 75 de Mortagne blvd, Boucherville, Quebec, J4B 6Y4 (Canada); Baril, Eric [Noranda Inc., 2250 Alfred Nobel blvd, St-Laurent, Quebec, H4S 2C9 (Canada); Fischersworring-Bunk, Andreas [BMW Group, Hufelandstr.8a, 80788 Munich (Germany)

2005-04-09T23:59:59.000Z

126

Sensitivity of Steel Casting Simulation Results to Alloy Property Datasets  

E-Print Network [OSTI]

1 Sensitivity of Steel Casting Simulation Results to Alloy Property Datasets Kent D. Carlson dataset; Ni-based alloys N3M, CW6MC and CW12MW can be represented by the benchmark CW12MW dataset; and Ni-based alloys M30C and M35-1 can be represented by the benchmark M35-1 dataset. While these alloy groupings

Beckermann, Christoph

127

3D Rendering and Ray Casting Michael Kazhdan  

E-Print Network [OSTI]

3D Rendering and Ray Casting Michael Kazhdan (600.357 / 600.457) HB Ch. 13.7, 14.6 FvDFH 15.5, 15.10 #12;Rendering · Generate an image from geometric primitives Rendering Geometric Primitives (3D) Raster Image (2D) #12;3D Rendering Example What issues must be addressed by a 3D rendering system? #12;Overview

Kazhdan, Michael

128

Dr. Ing. /PhD / Dr.techn. Students supervised by Signe Kjelstrup 1. Torleif Holt, Transport and equilibrium properties of a cation exchange membrane (1983)  

E-Print Network [OSTI]

, (1996) 6. Magnar Ott√ły, Mass and heat transfer in ion-exchange membranes (1996) 7. Belinda Flem, Peltier in the Polymer Electrolyte Membrane Fuel Cell (2007) 17. Isabella Inzoli, Coupled transports of heat and massDr. Ing. /PhD / Dr.techn. Students supervised by Signe Kjelstrup 1. Torleif Holt, Transport

Kjelstrup, Signe

129

Genomic Structure of the Human ING1 Gene and Tumor-specific Mutations Detected in Head and Neck Squamous Cell Carcinomas  

Science Journals Connector (OSTI)

...region (5) . By using the Stanford G3 radiation hybrid panel, ING1 was linked to marker SHGC-5819, with a LOD score of 10.35 (5) . The markers SHGC-5819 and D13S278 are colocalized within less than 3 cM. 4 We therefore determined the...

Mehmet Gunduz; Mamoru Ouchida; Kunihiro Fukushima; Hiroko Hanafusa; Tsutomu Etani; Shinji Nishioka; Kazunori Nishizaki; Kenji Shimizu

2000-06-15T23:59:59.000Z

130

BULLETIN OF THE UNITED STATES` FISH COMMISSION. 165 ing two days to his instruction as to the care of the eggs. He was de-  

E-Print Network [OSTI]

BULLETIN OF THE UNITED STATES` FISH COMMISSION. 165 ing two days to his instruction as to the care, who had kindly tendered me the use of it until tho uecessarj- ponds can be constructed to keep them in. From these Esh I hope to obtain a stock from which we will be able to supply the streams

131

Manual HVOF thermal spray repair of nickel aluminum bronze castings  

SciTech Connect (OSTI)

Manual high velocity oxyfuel (HVOF) thermal spray repairs were accomplished on a large nickel aluminum bronze propeller castings. The repairs were done on three different configurations of surface defects of up to 100 square inches and as deep as 90 mils. Nickel aluminum bronze alloy powder, sieve sized for the HVOF process, was sprayed. High quality, high coating density, repairs were achieved even on porous areas of the castings. Prior to performance of the repairs, a procedure was qualified in accordance with MIL-STD-1687 and a mock-up simulating the repair was produced. After HVOF spraying of the mock-up, the sprayed surface was sanded, milled, and drilled to determine how finishing of the actual castings would be done. After successful procedure qualification, the HVOF equipment was moved to the job site, metal masking was devised for the spray areas and grit blasting and manual HVOF spraying was done. Results of HVOF coating chemical analyses, bend tests, coating tensile bond strength tests, coating microscopic examinations, and mock-up evaluations are reported along with the spray procedures and techniques used in the repairs.

Brenna, R.T.; McCaw, R.L.; Pugh, J.L.

1994-12-31T23:59:59.000Z

132

Axion helioscopes update: the status of CAST and IAXO  

E-Print Network [OSTI]

Almost 35 years since their suggestion as a good solution to the strong CP-problem, axions remain one of the few viable candidates for the Dark Matter, although still eluding detection. Most of the methods for their detection are based on their coupling to photons, one of the most sensitive ones being the helioscope technique. We report on the current status of the CERN Axion Solar Telescope and the future International Axion Observatory (IAXO). Recent results from the second part of CAST phase II, where the magnet bores were filled with 3He gas at variable pressure achieving sensibilities on the axion mass up to 1.2 eV, are presented. Currently, CAST is expecting to improve its sensitivity to solar axions with rest mass below 0.02 eV/c^2 after the upgrade of the X-ray detectors and with the implementation of a second X-ray optic. At the same time, it is exploring other possibilities at the low energy physics frontier. On the other hand IAXO, the fourth generation axion helioscope, aims to improve CAST's perf...

Dafni, T

2015-01-01T23:59:59.000Z

133

Axion helioscopes update: the status of CAST and IAXO  

E-Print Network [OSTI]

Almost 35 years since their suggestion as a good solution to the strong CP-problem, axions remain one of the few viable candidates for the Dark Matter, although still eluding detection. Most of the methods for their detection are based on their coupling to photons, one of the most sensitive ones being the helioscope technique. We report on the current status of the CERN Axion Solar Telescope and the future International Axion Observatory (IAXO). Recent results from the second part of CAST phase II, where the magnet bores were filled with 3He gas at variable pressure achieving sensibilities on the axion mass up to 1.2 eV, are presented. Currently, CAST is expecting to improve its sensitivity to solar axions with rest mass below 0.02 eV/c^2 after the upgrade of the X-ray detectors and with the implementation of a second X-ray optic. At the same time, it is exploring other possibilities at the low energy physics frontier. On the other hand IAXO, the fourth generation axion helioscope, aims to improve CAST's performance in terms of axion-photon coupling by 1-1.5 orders of magnitude. The details of the project building a dedicated magnet, optics and X-ray detectors are given.

T. Dafni; F. J. Iguaz; on behalf of the CAST; IAXO collaborations

2015-01-07T23:59:59.000Z

134

Commercialization effort in support of electroslag-casting technology  

SciTech Connect (OSTI)

This report summarizes the results of an effort to revive interest in the electroslag casting (ESC) of components in the United States. The ESC process is an extension of a well established electroslag-remelting (ESR) process. Both processes use the electrode of a material that is continuously melted and cast in a water-cooled copper mold. For simple shapes, the mold can be movable, allowing the continuous casting of long lengths. In an effort to revive US industries` interest in ESC, the following approaches were taken: (1) US industries with prior experience in ESC or currently operating an ESR unit were contacted, followed up with telephone conversation, and/or sent copies of prior published reports on the topic, and, in some cases, personal visits were made; (2) with two companies, a potential interest in ESC was worked out by initially conducting ESR; and (3) to further strengthen the industrial interest, the newly developed iron-aluminide alloy, FA-129, was chosen as the material of choice for this study. The two industrial companies that worked with ORNL were Special Metals Corporation (New Hartford, New York) and Precision Rolled Products, Inc. (PRP) [Florham Park, New Jersey]. Even with its advantages, a survey of the industry indicated that ESC technology has a very limited chance of advancement in the United States. However, the processing of rounds and slabs by the ESR process is a well established commercial technology and will continue to expand. 16 figs, 3 tabs, 12 refs.

Sikka, V.K.

1993-06-01T23:59:59.000Z

135

Challenges and Capabilities for Inspection of Cast Stainless Steel Piping  

SciTech Connect (OSTI)

Studies conducted at the Pacific N¨orthwest National Laboratory (PNNL) in Richland, Washington, have focused on developing and evaluating the reliability of nondestructive examination (NDE) approaches for inspecting coarse-grained, cast stainless steel reactor components. The objective of this work is to provide information to the United States Nuclear Regulatory Commission (US NRC) on the utility, effec¨tiveness and limitations of NDE techniques as related to the inservice inspec¨tion of primary system piping components in pressurized water reactors (PWRs). This paper describes results from recent assessments built upon early work with low frequency ultrasonic testing (UT) coupled with synthetic aperture focusing technique (SAFT) signal processing, and has subsequently evolved into an approach using low frequency phased array technology as applied from the outer diameter surface of the piping. In addition, eddy current examination as performed from the inner diameter surface of these piping welds is also reported. Cast stainless steel (CSS) pipe specimens were examined that contain thermal and mechanical fatigue cracks located close to the weld roots and have inside/outside surface geometrical conditions that simulate several PWR primary piping weldments and configurations. In addition, segments of vintage centrifugally cast piping were also examined to understand inherent acoustic noise and scattering due to grain structures and determine consistency of UT responses from different locations. The advanced UT methods were applied from the outside surface of these specimens using automated scanning devices and water coupling. The phased array approach was implemented with a modified instrument operating at low frequencies and composite volumetric images of the samples were generated with 500 kHz, 750 kHz, and 1.0 MHz arrays. Eddy current studies were conducted on the inner diameter surface of these piping welds using a commercially available instrument and a cross point probe design operating at a frequency of 250 kHz. Results from the laboratory studies indicate that 500 kHz phased array methods are capable of detecting flaws greater than 30% through-wall in the cast specimens. Length-sizing of flaws is possible, but no diffracted signals could be observed to support time-of-flight depth sizing. The work with eddy current examinations on the inner diameter surface indicate that, while certain cast austenitic microstructures provide excessive background noise due to permeability variations, surface-breaking flaws are quite easily detected. This work was sponsored by the U.S. Nuclear Regulatory Commission under Contract DE-AC06-76RLO 1830; NRC JCN Y6604; Mr. Wallace Norris, NRC Project Monitor.

Anderson, Michael T.; Crawford, Susan L.; Cumblidge, Stephen E.; Diaz, Aaron A.; Doctor, Steven R.

2007-12-31T23:59:59.000Z

136

GRAIN REFINEMENT OF PERMANENT MOLD CAST COPPER BASE ALLOYS  

SciTech Connect (OSTI)

Grain refinement behavior of copper alloys cast in permanent molds was investigated. This is one of the least studied subjects in copper alloy castings. Grain refinement is not widely practiced for leaded copper alloys cast in sand molds. Aluminum bronzes and high strength yellow brasses, cast in sand and permanent molds, were usually fine grained due to the presence of more than 2% iron. Grain refinement of the most common permanent mold casting alloys, leaded yellow brass and its lead-free replacement EnviroBrass III, is not universally accepted due to the perceived problem of hard spots in finished castings and for the same reason these alloys contain very low amounts of iron. The yellow brasses and Cu-Si alloys are gaining popularity in North America due to their low lead content and amenability for permanent mold casting. These alloys are prone to hot tearing in permanent mold casting. Grain refinement is one of the solutions for reducing this problem. However, to use this technique it is necessary to understand the mechanism of grain refinement and other issues involved in the process. The following issues were studied during this three year project funded by the US Department of Energy and the copper casting industry: (1) Effect of alloying additions on the grain size of Cu-Zn alloys and their interaction with grain refiners; (2) Effect of two grain refining elements, boron and zirconium, on the grain size of four copper alloys, yellow brass, EnviroBrass II, silicon brass and silicon bronze and the duration of their effect (fading); (3) Prediction of grain refinement using cooling curve analysis and use of this method as an on-line quality control tool; (4) Hard spot formation in yellow brass and EnviroBrass due to grain refinement; (5) Corrosion resistance of the grain refined alloys; (6) Transfer the technology to permanent mold casting foundries; It was found that alloying elements such as tin and zinc do not change the grain size of Cu-Zn alloys. Aluminum promoted b phase formation and modified the grain structure from dendritic to equiaxed. Lead or bismuth reduces the size of grains, but not change the morphology of the structure in Cu-Zn alloys. The grain size of the Cu-Zn-alloy can be reduced from 3000 mm to 300 mm after the addition of aluminum and lead. Similar effects were observed in EnviroBrass III after the addition of aluminum and bismuth. Boron refined the structure of yellow brasses in the presence of iron. At least 50 ppm of iron and 3 ppm of boron are necessary to cause grain refinement in these alloys. Precipitation of iron from the melt is identified as the cause of grain refinement. Boron initiates the precipitation of iron which could not be explained at this time. On the other hand zirconium causes some reduction in grain size in all four alloys investigated. The critical limit for the zirconium was found to be around 100 ppm below which not much refinement could be observed. The mechanism of grain refinement in the presence of zirconium could not be explained. Grain refinement by boron and iron can remain over a long period of time, at least for 72 hours of holding or after remelting few times. It is necessary to have the iron and boron contents above the critical limits mentioned earlier. On the other hand, refinement by zirconium is lost quite rapidly, some times within one hour of holding, mostly due to the loss of zirconium, most probably by oxidation, from the melt. In all the cases it is possible to revive the refinement by adding more of the appropriate refining element. Cooling curve analysis (thermal analysis) can be used successfully to predict the grain refinement in yellow brasses. The precipitation of iron in the liquid metal causes the metal to solidify without undercooling. Absence of this reaction, as indicated by the time-temperature (t-T) and its first derivative (dt/dT) curves, proved to be an indicator of refinement. The viability of the technique as an on-line quality control tool was proved in two foundries. The method can also correctly predict the onset of fading. Th

M. SADAYAPPAN, J.P. THOMSON, M.ELBOUJDAINI, G. PING GU, M. SAHOO

2004-04-29T23:59:59.000Z

137

Residual stress measurement on ductile cast iron using critically refracted longitudinal (Lcr) wave technique  

E-Print Network [OSTI]

using ultrasonics was approached. Residual stresses in castings are developed for various reasons. The presence of these stresses, coupled with applied stresses in service, sometimes results in the yield of material and subsequent failure of component.... Present work was focussed on development of an ultrasonic technique using critically refracted longitudinal (L g waves for evaluating residual stresses in ductile cast iron. An L probe suitable to work with ductile cast iron was designed and fabricated...

Chundu, Srinivasulu Naidu

2012-06-07T23:59:59.000Z

138

Die casting research. Annual progress report, June 29, 1994--June 30, 1995  

SciTech Connect (OSTI)

Cr carbide and other CVD coatings were evaluated for improving wear resistance of Al and Zn die casting dies; die cavity instrumentation was also studied.

Brevick, J.; Mobley, C.; Shivpuri, R.; Goodwin, F.

1995-07-31T23:59:59.000Z

139

Cooling slope casting to produce EN AW 6082 forging stock for manufacture of suspension components  

Science Journals Connector (OSTI)

Abstract The potential of cooling slope casting process to produce EN AW 6082 forging stock for the manufacture of EN AW 6082 suspension components was investigated. EN AW 6082 billets cast over a cooling plate offer a fine uniform structure that can be forged even without a separate homogenization treatment. This is made it possible by the limited superheat of the melt at the start of casting and the fractional solidification that occurs already on the cooling plate. Suspension parts forged from cast and homogenized billets with or without Cr all showed a uniform structure, and the hardness reached HV 110 after the standard artificial ageing treatment.

Yucel BIROL; Seracettin AKDI

2014-01-01T23:59:59.000Z

140

E-Print Network 3.0 - alloy-graphite castings technical Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Materials Science 8 Simulation of Hot Tearing and Distortion during Casting of Steel: Comparison with Experiments Summary: Simulation of Hot Tearing and Distortion during...

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

E-Print Network 3.0 - aluminum casting technology Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

summarizes attempts of incorporating fly ash into aluminum castings to decrease the energy content, material... . It is shown that fly ash can be incorporated in aluminum...

142

E-Print Network 3.0 - aluminum die casting Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

summarizes attempts of incorporating fly ash into aluminum castings to decrease the energy content, material... . It is shown that fly ash can be incorporated in ... Source:...

143

E-Print Network 3.0 - aluminum shape casting Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

summarizes attempts of incorporating fly ash into aluminum castings to decrease the energy content, material... . It is shown that fly ash can be incorporated in aluminum...

144

Low-Cost Magnesium Sheet Production using the Twin Roll Casting...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

using the Twin Roll Casting Process and Asymmetric Rolling 2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer...

145

eNgINeerINg g r A d U A T e P r O g r A M S  

E-Print Network [OSTI]

IIT ArMOUr COllege Of eNgINeerINg g r A d U A T e P r O g r A M S Educating a nEw gEnEration of EnginEErs #12;A TrAdiTion of ExcEllEncE Armour College of Engineering was founded in 1893 as Armour Institute, dedicated to preparing students from all backgrounds for careers as engineers in a rapidly

Heller, Barbara

146

Energy Saving Melting and Revert Reduction Technology (Energy-SMARRT): Light Metals Permanent Mold Casting  

SciTech Connect (OSTI)

Current vehicles use mostly ferrous components for structural applications. It is possible to reduce the weight of the vehicle by substituting these parts with those made from light metals such as aluminum and magnesium. Many alloys and manufacturing processes can be used to produce these light metal components and casting is known to be most economical. One of the high integrity casting processes is permanent mold casting which is the focus of this research report. Many aluminum alloy castings used in automotive applications are produced by the sand casting process. Also, aluminum-silicon (Al-Si) alloys are the most widely used alloy systems for automotive applications. It is possible that by using high strength aluminum alloys based on an aluminum-copper (Al-Cu) system and permanent mold casting, the performance of these components can be enhanced significantly. This will also help to further reduce the weight. However, many technological obstacles need to be overcome before using these alloys in automotive applications in an economical way. There is very limited information in the open literature on gravity and low-pressure permanent mold casting of high strength aluminum alloys. This report summarizes the results and issues encountered during the casting trials of high strength aluminum alloy 206.0 (Al-Cu alloy) and moderate strength alloy 535.0 (Al-Mg alloy). Five engineering components were cast by gravity tilt-pour or low pressure permanent mold casting processes at CanmetMATERIALS (CMAT) and two production foundries. The results of the casting trials show that high integrity engineering components can be produced successfully from both alloys if specific processing parameters are used. It was shown that a combination of melt processing and mold temperature is necessary for the elimination of hot tears in both alloys.

Fasoyinu, Yemi [CanmetMATERIALS] [CanmetMATERIALS

2014-03-31T23:59:59.000Z

147

Casting of metallic fuel containing minor actinide additions  

SciTech Connect (OSTI)

A significant attribute of the Integral Fast Reactor (IFR) concept is the transmutation of long-lived minor actinide fission products. These isotopes require isolation for thousands of years, and if they could be removed from the waste, disposal problems would be reduced. The IFR utilizes pyroprocessing of metallic fuel to separate auranium, plutonium, and the minor actinides from nonfissionable constituents. These materials are reintroduced into the fuel and reirradiated. Spent IFR fuel is expected to contain low levels of americium, neptunium, and curium because the hard neutron spectrum should transmute these isotopes as they are produced. This opens the possibility of using an IFR to trnasmute minor actinide waste from conventional light water reactors (LWRs). A standard IFR fuel is based on the alloy U-20% Pu-10% Zr (in weight percent). A metallic fuel system eases the requirements for reprocessing methods and enables the minor actinide metals to be incorporated into the fuel with simple modifications to the basic fuel casting process. In this paper, the authors report the initial casting experience with minor actinide element addition to an IFR U-Pu-Zr metallic fuel.

Trybus, C.L.; Henslee, S.P. (Argonne National Lab.-West, Idaho Falls, ID (United States)); Sanecki, J.E. (Argonne National Lab., IL (United States))

1992-01-01T23:59:59.000Z

148

Energy Saving Melting and Revert Reduction (E-SMARRT): Precision Casting of Steel  

SciTech Connect (OSTI)

This project addresses improvements in metal casting processes by reducing scrap and reducing the cost of production, due to scrap reduction from investment casting and yield improvement offered by lost foam casting as compared to no-bake or green sand molding. The objectives for the investment casting portion of the subtask are to improve knowledge of fracture toughness of mold shells and the sources of strength limiting flaws and to understand the effects of wax reclamation procedures on wax properties. Applying 'clean steel' approaches to pouring technology and cleanliness in investment casting of steel are anticipated to improve incoming materials inspection procedures as they affect the microstructure and toughness of the shell. This project focused on two areas of study in the production of steel castings to reduce scrap and save energy: (1) Reducing the amount of shell cracking in investment cast steel production; (2) Investigate the potential of lost foam steel casting The basic findings regarding investment casting shell cracking were: (1) In the case of post pouring cracking, this could be related to phase changes in silica upon cooling and could be delayed by pouring arrangement strategies that maintained the shell surface at temperature for longer time. Employing this delay resulted in less adherent oxidation of castings since the casting was cooler at the time o fair exposure. (2) A model for heat transfer through water saturated shell materials under steam pressure was developed. (3) Initial modeling result of autoclave de-waxing indicated the higher pressure and temperature in the autoclave would impose a steeper temperature gradient on the wax pattern, causing some melt flow prior to bulk expansion and decreasing the stress on the green shell. Basic findings regarding lost foam casting of steel at atmospheric pressure: (1) EPS foam generally decomposes by the collapse mode in steel casting. (2) There is an accumulation of carbon pick-up at the end of the casting opposite the gate. (3) It is recommended that lost foam castings in steel be gated for a quiescent fill in an empty cavity mold to prevent foam occlusion defects from the collapse mode. The energy benefit is primarily in yield savings and lower casting weight per function due to elimination of draft and parting lines for the larger lost foam castings. For the smaller investment casting, scrap losses due to shell cracking will be reduced. Both of these effects will reduce the metal melted per good ton of castings. There will also be less machine stock required per casting which is a yield savings and a small additional energy savings in machining. Downstream savings will come from heavy truck and railroad applications. Application of these processes to heavy truck castings will lighten the heavy truck fleet by about ten pounds per truck. Using ten years to achieve full penetration of the truck fleet at linear rate this will result in a fuel savings of 131 trillion BTU over ten years.

Dr. Von L. Richards

2011-09-30T23:59:59.000Z

149

CAST STONE TECHNOLOGY FOR THE TREATMENT AND IMMOBILIZATION OF LOW-ACTIVITY WASTE  

SciTech Connect (OSTI)

Cast stone technology is being evaluated for potential application in the treatment and immobilization of Hanford low-activity waste. The purpose of this document is to provide background information on cast stone technology. The information provided in the report is mainly based on a pre-conceptual design completed in 2003.

MINWALL HJ

2011-04-08T23:59:59.000Z

150

Prediction of the Fatigue Life of Cast Steel Containing Shrinkage Porosity  

E-Print Network [OSTI]

of porosity becomes especially critical. An integrated design process is emerging in which a casting process] It is anticipated that such a design process will also help guide and improve casting inspection procedures INHOMOGENEITIES due to porosity are currently not considered in the design of structural components made from

Beckermann, Christoph

151

Modelling the environmental impact of an aluminium pressure die casting plant and options for control  

Science Journals Connector (OSTI)

This study describes a model (MIKADO) to analyse options to reduce the environmental impact of aluminium die casting. This model will take a company perspective, so that it can be used as a decision-support tool for the environmental management of a ... Keywords: Aluminium die casting plant, Environmental decision-support tool, Environmental impact assessment, Integrated Assessment Model, Modelling

Belmira Neto; Carolien Kroeze; Leen Hordijk; Carlos Costa

2008-02-01T23:59:59.000Z

152

Metrological analysis of a procedure for the automatic 3D modeling of dental plaster casts  

E-Print Network [OSTI]

Metrological analysis of a procedure for the automatic 3D modeling of dental plaster casts Nicola to an automatic procedure recently proposed for the 3D modeling of dental plaster casts. This contribution derives of an automatic 3D modeling procedure recently proposed and it shows the accuracy of 3D modeling dental plaster

Abu-Mostafa, Yaser S.

153

Understanding the Relationship Between Filling Pattern and Part Quality in Die Casting  

SciTech Connect (OSTI)

The overall objective of this research project was to investigate phenomena involved in the filling of die cavities with molten alloy in the cold chamber die-casting process. It has long been recognized that the filling pattern of molten metal entering a die cavity influences the quality of die-cast parts. Filling pattern may be described as the progression of molten metal filling the die cavity geometry as a function of time. The location, size and geometric configuration of points of metal entry (gates), as well as the geometry of the casting cavity itself, have great influence on filling patterns. Knowledge of the anticipated filling patterns in die-castings is important for designers. Locating gates to avoid undesirable flow patterns that may entrap air in the casting is critical to casting quality - as locating vents to allow air to escape from the cavity (last places to fill). Casting quality attributes that are commonly flow related are non-fills, poor surface finish, internal porosity due to trapped air, cold shuts, cold laps, flow lines, casting skin delamination (flaking), and blistering during thermal treatment.

Jerald Brevick; R. Allen Miller

2004-03-15T23:59:59.000Z

154

Clean Cast Steel Technology: Effect of Micro-porosity on Tensile and Charpy Properties of Four Cast Steels  

SciTech Connect (OSTI)

The effect of these large shrink cavities on mechanical properties could be easily calculated using well established engineering formulas. Over the years, increases in computational and metallurgical resources have allowed the modeler to improve accuracy and increase the complexity of numerical predictors. An accurate prediction of micro-porosity, not observable using conventional radiographic techniques, and an engineering understanding of the effect on mechanical properties would give a designer confidence in using a more efficient casting design and a lower safety factor. This will give castings an additional design advantage. The goal of this project is to provide current and future modelers/designers with a tensile and Charpy property dataset for validation of micro-porosity predictors. The response of ultimate strength, elongation, and reduction in area to micro-porosity was very similar in all four alloys. Ultimate strength was largely unaffected by tensile fracture surface porosity until values of about 25% were reached and decreased linearly with increasing values. Elongation and reduction in area decreased sharply after less than 5% fracture surface porosity. Niyama values of about 0.7 were produced sound material and acceptable tensile properties. Ultrasonic velocities of 0.233 in/usec and higher produced acceptable tensile properties. Metallographic examination revealed a ratio of 4-6 to 1 in fracture surface porosity to metallographic porosity. Charpy impact properties were largely unaffected by the microporosity concentrations examined in this study and did not correlate to either Niyama values, fracture surface porosity, or metallographic porosity.

Griffin, John, A.; Bates, Charles, E.

2005-09-19T23:59:59.000Z

155

The Effect of Equilibrating Mounted Dental Stone Casts in Maximum Intercuspation on the Occlusal Harmony of an Indirect Restoration  

E-Print Network [OSTI]

The purpose of this study was to determine if equilibration of dental stone casts mounted in maximum intercuspation can improve occlusal harmony of a cast gold restoration. A dentoform mounted on an articulator with crown preparation on tooth #19...

Benson, Peter Andrew

2013-12-13T23:59:59.000Z

156

Characterization of Al-Mn particles in AZ91D investment castings  

SciTech Connect (OSTI)

Manganese is currently added to Mg-Al alloys in order to improve the corrosion behavior of cast components. A part of this manganese is dissolved in the magnesium matrix and the balance is found as fine Al(Mn,Fe) particles dispersed within castings. For AZ91D specimens prepared using the plaster mould investment casting process, these particles were observed in very large quantity at the surface of castings. These particles were characterized by scanning electron microscopy and electron probe microanalysis. It was found that they consist of Al{sub 8}Mn{sub 5} phase and that their morphology and size depend on local solidification conditions. Their presence at the surface of the castings is related to low solidification rates and reduced thermal gradients at the mould/metal interface.

Lun Sin, S. [Department of Mining, Metallurgical and Materials Engineering, Laval University, Quebec, Quebec, G1K 7P4 (Canada); Dube, D. [Department of Mining, Metallurgical and Materials Engineering, Laval University, Quebec, Quebec, G1K 7P4 (Canada)], E-mail: dominique.dube@gmn.ulaval.ca; Tremblay, R. [Department of Mining, Metallurgical and Materials Engineering, Laval University, Quebec, Quebec, G1K 7P4 (Canada)

2007-10-15T23:59:59.000Z

157

Proposal for the award of a blanket contract for the supply of cast-resin dry-type power transformers  

E-Print Network [OSTI]

Proposal for the award of a blanket contract for the supply of cast-resin dry-type power transformers

2012-01-01T23:59:59.000Z

158

Engineering scale demonstration of a prospective Cast Stone process  

SciTech Connect (OSTI)

This report documents an engineering-scale demonstration with non-radioactive simulants that was performed at SRNL using the Scaled Continuous Processing Facility (SCPF) to fill an 8.5 ft container with simulated Cast Stone grout. The Cast Stone formulation was chosen from the previous screening tests. Legacy salt solution from previous Hanford salt waste testing was adjusted to correspond to the average composition generated from the Hanford Tank Waste Operation Simulator (HTWOS). The dry blend materials, ordinary portland cement (OPC), Class F fly ash, and ground granulated blast furnace slag (GGBFS or BFS), were obtained from Lafarge North America in Pasco, WA. Over three days, the SCPF was used to fill a 1600 gallon container, staged outside the facility, with simulated Cast Stone grout. The container, staged outside the building approximately 60 ft from the SCPF, was instrumented with x-, y-, and z-axis thermocouples to monitor curing temperature. The container was also fitted with two formed core sampling vials. For the operation, the targeted grout production rate was 1.5 gpm. This required a salt solution flow rate of approximately 1 gpm and a premix feed rate of approximately 580 lb/h. During the final day of operation, the dry feed rate was increased to evaluate the ability of the system to handle increased throughput. Although non-steady state operational periods created free surface liquids, no bleed water was observed either before or after operations. The final surface slope at a fill height of 39.5 inches was 1-1.5 inches across the 8.5 foot diameter container, highest at the final fill point and lowest diametrically opposed to the fill point. During processing, grout was collected in cylindrical containers from both the mixer discharge and the discharge into the container. These samples were stored in a humid environment either in a closed box proximal to the container or inside the laboratory. Additional samples collected at these sampling points were analyzed for rheological properties and density. Both the rheological properties (plastic viscosity and yield strength) and density were consistent with previous and later SCPF runs.

Cozzi, A.; Fowley, M.; Hansen, E.; Fox, K.; Miller, D.; Williams, M.

2014-09-30T23:59:59.000Z

159

First results from the CERN Axion Solar Telescope (CAST)  

E-Print Network [OSTI]

Hypothetical axion-like particles with a two-photon interaction would be produced in the Sun by the Primakoff process. In a laboratory magnetic field (``axion helioscope'') they would be transformed into X-rays with energies of a few keV. Using a decommissioned LHC test magnet, CAST has been running for about 6 months during 2003. The first results from the analysis of these data are presented here. No signal above background was observed, implying an upper limit to the axion-photon coupling < 1.16 10^{-10} GeV^-1 at 95% CL for m_a <~0.02 eV. This limit is comparable to the limit from stellar energy-loss arguments and considerably more restrictive than any previous experiment in this axion mass range.

CAST Collaboration

2005-03-01T23:59:59.000Z

160

Electromagnetic augmentation for casting of thin metal sheets  

DOE Patents [OSTI]

Thin metal sheets are cast by magnetically levitating molten metal deposited in a model within a ferromagnetic yoke and between AC conducting coils and linearly displacing the magnetically levitated liquid metal while it is being cooled by the water-cooled walls of the mold to form a solid metal sheet. A conducting shield is electrically coupled to the molten metal sheet to provide a return path for eddy currents induced in the metal sheet by the current in the AC conducting coils. In another embodiment, a DC conducting coil is coupled to the metal sheet for providing a direct current therein which interacts with the magnetic field to levitate the moving metal sheet. Levitation of the metal sheet in both molten and solid forms reduces its contact pressure with the mold walls while maintaining sufficient engagement therebetween to permit efficient conductive cooling by the mold through which a coolant fluid may be circulated. 8 figs.

Hull, J.R.

1987-10-28T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Understanding how processing additives tune nanoscale morphology of high efficiency organic photovoltaic blends: From casting solution to spun-cast thin film  

SciTech Connect (OSTI)

Adding a small amount of a processing additive to the casting solution of organic blends has been demonstrated to be an effective method for achieving improved power conversion efficiency (PCE) in organic photovoltaics (OPVs). However, an understanding of the nano-structural evolution occurring in the transformation from casting solution to thin photoactive films is still lacking. In this report, we investigate the effects of the processing additive diiodooctane (DIO) on the morphology of OPV blend of PBDTTT-C-T and fullerene derivative, PC71BM in a casting solution and in spun-cast thin films by using neutron/x-ray scattering, neutron reflectometry and other characterization techniques. The results reveal that DIO has no effect on the solution structures of PBDTTT-C-T and PC71BM. In the spun-cast films, however, DIO is found to promote significantly the molecular ordering of PBDTTT-C-T and PC71BM, and phase segregation, resulting in the improved PCE. Thermodynamic analysis based on Flory-Huggins theory provides a rationale for the effects of DIO on different characteristics of phase segregation as a solvent and due to evaporationg during the film formation. Such information may enable improved rational design of ternary blends to more consistently achieve improved PCE for OPVs.

Shao, Ming [ORNL; Keum, Jong Kahk [ORNL; Kumar, Rajeev [ORNL; Chen, Jihua [ORNL; Browning, Jim [ORNL; Chen, Wei [Argonne National Laboratory (ANL); Jianhui, Hou [Chinese Academy of Sciences (CAS), Institute of Chemistry; Do, Changwoo [ORNL; Littrell, Ken [ORNL; Sanjib, Das [University of Tennessee, Knoxville (UTK); Rondinone, Adam Justin [ORNL; Geohegan, David B [ORNL; Sumpter, Bobby G [ORNL; Xiao, Kai [ORNL

2014-01-01T23:59:59.000Z

162

MACHINING ELIMINATION THROUGH APPLICATION OF THREAD FORMING FASTENERS IN NET SHAPED CAST HOLES  

SciTech Connect (OSTI)

The ultimate objective of this work was to eliminate approximately 30% of the machining performed in typical automotive engine and transmission plants by using thread forming fasteners in as-cast holes of aluminum and magnesium cast components. The primary issues at the source of engineers√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬? reluctance to implementing thread forming fasteners in lightweight castings are: * Little proof of consistency of clamp load vs. input torque in either aluminum or magnesium castings. * No known data to understand the effect on consistency of clamp load as casting dies wear. The clamp load consistency concern is founded in the fact that a portion of the input torque used to create clamp load is also used to create threads. The torque used for thread forming may not be consistent due to variations in casting material, hole size and shape due to tooling wear and process variation (thermal and mechanical). There is little data available to understand the magnitude of this concern or to form the basis of potential solutions if the range of clamp load variation is very high (> +/- 30%). The range of variation that can be expected in as-cast hole size and shape over the full life cycle of a high pressure die casting die was established in previous work completed by Pacific Northwest National Laboratory, (PNNL). This established range of variation was captured in a set of 12 cast bosses by designing core pins at the size and draft angles identified in the sited previous work. The cast bosses were cut into √?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?nuts√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬?√?¬Ě that could be used in the Ford Fastener Laboratory test-cell to measure clamp load when a thread forming fastener was driven into a cast nut. There were two sets of experiments run. First, a series of cast aluminum nuts were made reflecting the range of shape and size variations to be expected over the life cycle of a die casting die. Taptite thread forming fasteners, (a widely used thread forming fastener suitable for aluminum applications), were driven into the various cored, as-cast nuts at a constant input torque and resulting clamp loads were recorded continuously. The clamp load data was used to determine the range of clamp loads to be expected. The bolts were driven to failure. The clamp load corresponding to the target input of 18.5 Nm was recorded for each fastener. In a like fashion, a second set of experiments were run with cast magnesium nuts and ALtracs thread forming fasteners, (a widely used thread forming fastener suitable for magnesium applications). Again all clamp loads were recorded and analyzed similarly to the Taptites in aluminum cast nuts. Results from previous work performed on the same test cell for a Battelle project using standard M8 bolts into standard M8 nuts were included as a comparator for a standard bolt and nut application. The results for the thread forming fasteners in aluminum cast holes were well within industry expectations of +/- 30% for out of the box and robustness range te

Cleaver, Ryan J.; Cleaver, Todd H.; Talbott, Richard

2012-05-02T23:59:59.000Z

163

Brain organization mirrors caste differences, colony founding and nest architecture in paper wasps (Hymenoptera: Vespidae)  

Science Journals Connector (OSTI)

...research-article Research articles 1001 42 14 133 Brain organization mirrors caste differences...social organization and may affect mosaic brain evolution. We asked whether the relative size of functionally distinct brain regions corresponds to species differences...

2009-01-01T23:59:59.000Z

164

CF8C PLus: A New Cast Stainless Steel for High-Temperature Diesel...  

Broader source: Energy.gov (indexed) [DOE]

exhaust components turbo-housing exhaust manifold C-15, 14.6L HD On- Highway Diesel Engine Materials Need: High Performance Low-Cost Alloy was Needed to Replace SiMo Cast Iron...

165

Casting a Wider Net: Distributed Resources for Metagenomics (2010 JGI/ANL HPC Workshop)  

ScienceCinema (OSTI)

Folker Meyer from Argonne National Lab gives a presentation on "Casting a Wider Net: Distributed Resources for Metagenomics" at the JGI/Argonne HPC Workshop on January 26, 2010.

Meyer, Folker [ANL

2011-06-08T23:59:59.000Z

166

E-Print Network 3.0 - aluminium die casting Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

1 2 3 4 5 > >> 1 Evaluation of microstructural eects on corrosion behaviour of AZ91D magnesium Summary: of aluminium or b phase. Die-cast material with smaller grain size and ne...

167

Geometrical Characterization of Precipitation Patterns  

E-Print Network [OSTI]

years, weather radar systems and satellites have providedof weather prediction models and satellite estimates,validation of weather fore- cast models and satellite data

AghaKouchak, Amir; Nasrollahi, Nasrin; Li, Jingjing; Imam, Bisher; Sorooshian, Soroosh

2011-01-01T23:59:59.000Z

168

In-situ Characterization of Cast Stainless Steel Microstructures  

SciTech Connect (OSTI)

Cast austenitic stainless steel (CASS) that was commonly used in U.S. nuclear power plants is a coarse-grained, elastically anisotropic material. The engineering properties of CASS made it a material of choice for selected designs of nuclear power reactor systems. However, the fabrication processes result in a variety of coarse-grain microstructures that are difficult to inspect ultrasonically, largely due to detrimental effects of wave interactions with the microstructure. To address the inspection needs, new approaches that are robust to these phenomena are being sought. However, overcoming the deleterious effects of the coarse-grained microstructure on the interrogating ultrasonic beam will require knowledge of the microstructure and the corresponding acoustic properties of the material, for potential optimization of inspection parameters to enhance the probability of detecting flaws. The goal of improving the reliability and effectiveness of ultrasonic inspection of CASS specimens can therefore potentially be achieved by first characterizing the microstructure of the component. The characterization of CASS microstructure must be done in-situ, to enable dynamic selection and optimization of the ultrasonic inspection technique. This paper discusses the application of ultrasonic measurement methods for classifying the microstructure of CASS components, when making measurements from the outside surface of the pipe or component. Results to date demonstrate the potential of ultrasonic and electromagnetic measurements to classify the material type of CASS for two consistent microstructures-equiaxed-grain material and columnar-grain material.

Anderson, Michael T.; Bond, Leonard J.; Diaz, Aaron A.; Good, Morris S.; Harris, Robert V.; Mathews, Royce; Ramuhalli, Pradeep; Roberts, Kamandi C.

2010-12-01T23:59:59.000Z

169

In-situ Characterization of Cast Stainless Steel Microstructures  

SciTech Connect (OSTI)

Cast austenitic stainless steel (CASS) was commonly used in selected designs of nuclear power reactor systems for corrosion resistance and enhanced durability in service. CASS materials are generally coarse-grained and elastically anisotropic in nature, and are consequently difficult to inspect ultrasonically, largely due to detrimental effects of ultrasonic wave interactions with the coarse-grain microstructures. To address the inspection needs for these materials, new approaches that are robust to these phenomena are being developed. However, to enhance the probability of detecting flaws, knowledge of the microstructure and the corresponding acoustic properties of the material may be required. This paper discusses the application of ultrasonic backscatter measurement methods for classifying the microstructure of CASS components, when making measurements from the outside surface of the pipe or component. Results to date from laboratory experiments demonstrate the potential of these measurements to classify the material type of CASS for two homogeneous microstructuresóequiaxed-grain material or columnar-grain material. Measurements on mixed or banded microstructures also show correlation with the estimated volume-fraction of columnar grains in the material. However, several operational issues will need to be addressed prior to applying this method for in-situ characterization of CASS microstructure.

Ramuhalli, Pradeep; Meyer, Ryan M.; Cinson, Anthony D.; Moran, Traci L.; Prowant, Matthew S.; Watson, Bruce E.; Mathews, Royce; Harris, Robert V.; Diaz, Aaron A.; Anderson, Michael T.

2012-09-01T23:59:59.000Z

170

HANFORD CONTAINERIZED CAST STONE FACILITY TASK 1 PROCESS TESTING & DEVELOPMENT FINAL TEST REPORT  

SciTech Connect (OSTI)

Laboratory testing and technical evaluation activities on Containerized Cast Stone (CCS) were conducted under the Scope of Work (SOW) contained in CH2M HILL Hanford Group, Inc. (CHG) Contract No. 18548 (CHG 2003a). This report presents the results of testing and demonstration activities discussed in SOW Section 3.1, Task I--''Process Development Testing'', and described in greater detail in the ''Containerized Grout--Phase I Testing and Demonstration Plan'' (CHG, 2003b). CHG (2003b) divided the CCS testing and evaluation activities into six categories, as follows: (1) A short set of tests with simulant to select a preferred dry reagent formulation (DRF), determine allowable liquid addition levels, and confirm the Part 2 test matrix. (2) Waste form performance testing on cast stone made from the preferred DRF and a backup DRF, as selected in Part I, and using low activity waste (LAW) simulant. (3) Waste form performance testing on cast stone made from the preferred DRF using radioactive LAW. (4) Waste form validation testing on a selected nominal cast stone formulation using the preferred DRF and LAW simulant. (5) Engineering evaluations of explosive/toxic gas evolution, including hydrogen, from the cast stone product. (6) Technetium ''getter'' testing with cast stone made with LAW simulant and with radioactive LAW. In addition, nitrate leaching observations were drawn from nitrate leachability data obtained in the course of the Parts 2 and 3 waste form performance testing. The nitrate leachability index results are presented along with other data from the applicable activity categories.

LOCKREM, L L

2005-07-13T23:59:59.000Z

171

Energy and Technolgy Assessment of Zinc and Magnesium Casting Plants, Technical Report Close-out, August 25,2006  

SciTech Connect (OSTI)

Twin City Die Castings Company of Minneapolis, Minnesota, Twin City Die Castings Company was awarded project No. DE-FG36-05GO15097 to perform plant wide assessments of ten (10) die casting facilities that produce zinc and magnesium alloy castings in order to determine improvements and potential cost savings in energy use. Mr. Heider filled the role of team leader for the project and utilized the North American Die Casting Association (NADCA) to conduct audits at team participant plants so as to hold findings specific to each plant proprietary. The intended benefits of the project were to improve energy use through higher operational and process efficiency for the plants assessed. An improvement in energy efficiency of 5 Ė 15% was targeted. The primary objectives of the project was to: 1) Expand an energy and technology tool developed by the NADCA under a previous DOE project titled, ďEnergy and Technology Assessment for Die Casting PlantsĒ for assessing aluminum die casting plants to be more specifically applicable to zinc and magnesium die casting facilities. 2) Conduct ten (10) assessments of zinc and magnesium die casting plants, within eight (8) companies, utilizing the assessment tool to identify, evaluate and recommend opportunities to enhance energy efficiency, minimize waste, and improve productivity. 3) Transfer the assessment tool to the die casting industry at large.

Twin City Die Castings Company; Tom Heider; North American Die Castings Association

2006-08-25T23:59:59.000Z

172

Simulation of Distortion and Residual Stress Development During Heat Treatment of Steel Castings  

SciTech Connect (OSTI)

Heat treatment and associated processing, such as quenching, are critical during high strength steel casting production. These processes must be managed closely to prevent thermal and residual stresses that may result in distortion, cracking (particularly after machining), re-work, and weld repair. The risk of casting distortion limits aggressive quenching that can be beneficial to the process and yield an improved outcome. As a result of these distortions, adjustments must be made to the casting or pattern design, or tie bars must be added. Straightening castings after heat treatments can be both time-consuming and expensive. Residual stresses may reduce a casting√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?s overall service performance, possibly resulting in catastrophic failure. Stress relieving may help, but expends additional energy in the process. Casting software is very limited in predicting distortions during heat treatment, so corrective measures most often involve a tedious trial-and-error procedure. An extensive review of existing heat treatment residual stress and distortion modeling revealed that it is vital to predict the phase transformations and microstructure of the steel along with the thermal stress development during heat treatment. After reviewing the state-of-the-art in heat treatment residual stress and distortion modeling, an existing commercial code was selected because of its advanced capabilities in predicting phase transformations, the evolving microstructure and related properties along with thermal stress development during heat treatment. However, this software was developed for small parts created from forgings or machined stock, and not for steel castings. Therefore, its predictive capabilities for heat treatment of steel castings were investigated. Available experimental steel casting heat treatment data was determined to be of insufficient detail and breadth, and so new heat treatment experiments were designed and performed, casting and heat treating modified versions of the Navy-C ring (a classical test shape for heat treatment experiments) for several carbon and low alloy steels in order to generate data necessary to validate the code. The predicted distortions were in reasonable agreement with the experimentally measured values. However, the final distortions in the castings were small, making it difficult to determine how accurate the predictions truly are. It is recommended that further validation of the software be performed with the aid of additional experiments with large production steel castings that experience significant heat treatment distortions. It is apparent from this research that the mechanical properties of the bonded sand used for cores and sand molds are key in producing accurate stress simulation results. Because of this, experiments were performed to determine the temperature-dependent elastic modulus of a resin-bonded sand commonly utilized in the steel casting industry. The elastic modulus was seen to vary significantly with heating and cooling rates. Also, the retained room temperature elastic modulus after heating was seen to degrade significantly when the sand was heated above 125√?¬?√?¬?√?¬?√?¬įC. The elastic modulus curves developed in this work can readily be utilized in casting simulation software. Additional experiments with higher heating rates are recommended to determine the behavior of the elastic modulus in the sand close to the mold-metal interface. The commercial heat treatment residual stress and distortion code, once fully validated, is expected to result in an estimated energy savings of 2.15 trillion BTU√?¬?√?¬Ę√?¬?√?¬?√?¬?√?¬?s/year. Along with these energy savings, reduction of scrap and improvement in casting yield will result in a reduction of the environmental emissions associated with the melting and pouring of the metal which will be saved as a result of this technology.

Christoph Beckermann; Kent Carlson

2011-07-22T23:59:59.000Z

173

Modeling and Optimization of Direct Chill Casting to Reduce Ingot Cracking  

SciTech Connect (OSTI)

Approximately 68% of the aluminum produced in the United States is first cast into ingots prior to further processing into sheet, plate, extrusions, or foil. The direct chill (DC) semi-continuous casting process has been the mainstay of the aluminum industry for the production of ingots due largely to its robust nature and relative simplicity. Though the basic process of DC casting is in principle straightforward, the interaction of process parameters with heat extraction, microstructural evolution, and development of solidification stresses is too complex to analyze by intuition or practical experience. One issue in DC casting is the formation of stress cracks [1-15]. In particular, the move toward larger ingot cross-sections, the use of higher casting speeds, and an ever-increasing array of mold technologies have increased industry efficiencies but have made it more difficult to predict the occurrence of stress crack defects. The Aluminum Industry Technology Roadmap [16] has recognized the challenges inherent in the DC casting process and the control of stress cracks and selected the development of 'fundamental information on solidification of alloys to predict microstructure, surface properties, and stresses and strains' as a high-priority research need, and the 'lack of understanding of mechanisms of cracking as a function of alloy' and 'insufficient understanding of the aluminum solidification process', which is 'difficult to model', as technology barriers in aluminum casting processes. The goal of this Aluminum Industry of the Future (IOF) project was to assist the aluminum industry in reducing the incidence of stress cracks from the current level of 5% to 2%. Decreasing stress crack incidence is important for improving product quality and consistency as well as for saving resources and energy, since considerable amounts of cast metal could be saved by eliminating ingot cracking, by reducing the scalping thickness of the ingot before rolling, and by eliminating butt sawing. Full-scale industrial implementation of the results of the proposed research would lead to energy savings in excess of 6 trillion Btu by the year 2020. The research undertaken in this project aimed to achieve this objective by a collaboration of industry, university, and national laboratory personnel through Secat, Inc., a consortium of aluminum companies. During the four-year project, the industrial partners and the research team met in 16 quarterly meetings to discuss research results and research direction. The industrial partners provided guidance, facilities, and experience to the research team. The research team went to two industrial plants to measure temperature distributions in commercial 60,000-lb DC casting ingot production. The project focused on the development of a fundamental understanding of ingot cracking and detailed models of thermal conditions, solidification, microstructural evolution, and stress development during the initial transient in DC castings of the aluminum alloys 3004 and 5182. The microstructure of the DC casting ingots was systematically characterized. Carefully designed experiments were carried out at the national laboratory and university facilities as well as at the industrial locations using the industrial production facilities. The advanced computational capabilities of the national laboratories were used for thermodynamic and kinetic simulations of phase transformation, heat transfer and fluid flow, solidification, and stress-strain evolution during DC casting. The achievements of the project are the following: (1) Identified the nature of crack formation during DC casting; (2) Developed a novel method for determining the mechanical properties of an alloy at the nonequilibrium mushy zone of the alloy; (3) Measured heat transfer coefficients (HTCs) between the solidifying ingot and the cooling water jet; (4) Determined the material constitutive model at high temperatures; and (5) Developed computational capabilities for the simulation of cracking formation in DC casting ingot. The models and the database de

Das, S.K.; Ningileri, S.; Long, Z.; Saito, K.; Khraisheh, M.; Hassan, M.H.; Kuwana, K.; Han, Q.; Viswanathan, S.; Sabau, A.S.; Clark, J.; Hyrn, J. (ANL)

2006-08-15T23:59:59.000Z

174

Relationship between casting distortion, mold filling, and interfacial heat transfer. Annual technical report, September 1997 - September 1998  

SciTech Connect (OSTI)

In the third year of this program, the final castings necessary to evaluate the effect of casting orientation and gating in silica sand lost foam were poured and measured using a CMM machine. Interfacial heat transfer and gap formation measurements continued. However, significant problems were encountered in making accurate measurements. No consistent evidence of gap formation was found in aluminum sand casting. Initial analysis yields heat transfer values below those previously reported in the literature. The program in continuing.

Woodbury, K.A.; Parker, J.K.; Piwonka, T.S.; Owusu, Y.

1998-10-22T23:59:59.000Z

175

nemsoverview_928.vp  

Gasoline and Diesel Fuel Update (EIA)

9) 9) The Na tional En ergy Mod el ing Sys tem: An Over view 2009 October 2009 En ergy In for ma tion Ad min is tra tion Of fice of In te grated Anal y sis and Fore cast ing U.S. De part ment of En ergy Wash ing ton, DC 20585 This re port was pre pared by the En ergy In for ma tion Ad min is tra tion, the in de pend ent sta tis ti cal and an a lyt i cal agency within the U.S. De part ment of En ergy. The in for ma tion con tained herein should be at trib uted to the En ergy In for ma tion Ad min is tra tion and should not be con strued as ad vo cat ing or re flect ing any pol icy po si tion of the De part ment of En ergy or any other or ga ni za tion. This pub li ca tion is on the WEB at: www.eia.doe.gov/oiaf/aeo/over view/ The Na tional En ergy Mod el ing Sys tem: An Over view 2009 pro vides a sum mary de scrip tion of the Na tional En ergy

176

Determination of effective axion masses in the helium-3 buffer of CAST  

SciTech Connect (OSTI)

The CERN Axion Solar Telescope (CAST) is a ground based experiment located in Geneva (Switzerland) searching for axions coming from the Sun. Axions, hypothetical particles that not only could solve the strong CP problem but also be one of the favored candidates for dark matter, can be produced in the core of the Sun via the Primakoff effect. They can be reconverted into X-ray photons on Earth in the presence of strong electromagnetic fields. In order to look for axions, CAST points a decommissioned LHC prototype dipole magnet with different X-ray detectors installed in both ends of the magnet towards the Sun. The analysis of the data acquired during the first phase of the experiment yielded the most restrictive experimental upper limit on the axion-to-photon coupling constant for axion masses up to about 0.02 eV/c{sup 2}. During the second phase, CAST extends its mass sensitivity by tuning the electron density present in the magnetic field region. Injecting precise amounts of helium gas has enabled CAST to look for axion masses up to 1.2 eV/c{sup 2}. This paper studies the determination of the effective axion masses scanned at CAST during its second phase. The use of a helium gas buffer at temperatures of 1.8 K has required a detailed knowledge of the gas density distribution. Complete sets of computational fluid dynamic simulations validated with experimental data have been crucial to obtain accurate results.

Ruz, J

2011-11-18T23:59:59.000Z

177

Prompt Neutron Time Decay in Single HEU and DU Metal Annular Storage Castings  

SciTech Connect (OSTI)

Previous measurements of highly enriched uranium (HEU) storage castings performed by Oak Ridge National Laboratory (ORNL) at the Y-12 National Security Complex showed a prompt neutron time decay that is not exponential. These measurements showed that multiple time constants originating from multiplication, time-of-flight, scattering in the assembly and room return could be associated with this prompt neutron decay. In this work, the contribution not associated with neutron multiplication was investigated via measurements with a depleted uranium (DU) casting. The measurements at ORNL used an annular (5.0-in OD, 3.5-in ID, 6.0-in H) DU casting with a time-tagged 252Cf source, centered vertically on the axis, and four closely coupled 1 1 6-in.-long plastic scintillators with -in.- thick lead shielding adjacent to the outer surface of the casting. This setup was identical to the configuration used in the previously performed measurements with HEU castings at Y-12. The time correlation between fission events and detections in the plastic scintillators was measured, as well as the time distribution of coincidences between multiple detectors within a 512-ns time window. The measurement results were then compared to MCNP-PoliMi calculations and the previous HEU measurements. Time constants from decay fits to the HEU and DU data were compared to characterize the contributions resulting from multiplication, time-of-flight, and scattering.

Pena, Kirsten E [ORNL] [ORNL; McConchie, Seth M [ORNL] [ORNL; Mihalczo, John T [ORNL] [ORNL

2010-01-01T23:59:59.000Z

178

ing delivery of shipment. For  

E-Print Network [OSTI]

of Food arid . Fluid Intake Edited by Edward M. Stricker Univmity oj Pittsburgh Pittsburgh, Pennsylvania living. The same fact, that most free-living omnivores live in r~.as in which no single food provides,-contributed to relatively independent literatures, and employed r- ferent theoretical perspectives. " In a landmark series

Galef Jr., Bennett G.

179

Technetium and Iodine Getters to Improve Cast Stone Performance  

SciTech Connect (OSTI)

To determine the effectiveness of the various getter materials prior to their solidification in Cast Stone, a series of batch sorption experiments was performed at Pacific Northwest National Laboratory. To quantify the effectiveness of the removal of Tc(VII) and I(I) from solution by getters, the distribution coefficient, Kd (mL/g), was calculated. Testing involved placing getter material in contact with spiked waste solutions at a 1:100 solid-to-solution ratio for periods up to 45 days with periodic solution sampling. One Tc getter was also tested at a 1:10 solid-to-solution ratio. Two different solution media, 18.2 M? deionized water (DI H2O) and a 7.8 M Na LAW simulant, were used in the batch sorption tests. Each test was conducted at room temperature in an anoxic chamber containing N2 with a small amount of H2 (0.7%) to maintain anoxic conditions. Each getter-solution combination was run in duplicate. Three Tc- and I-doping concentrations were used separately in aliquots of both the 18.2 M? DI H2O and a 7.8 M Na LAW waste simulant. The 1◊ concentration was developed based on Hanford Tank Waste Operations Simulator (HTWOS) model runs to support the River Protection Project System Plan Revision 6. The other two concentrations were 5◊ and 10◊ of the HTWOS values. The Tc and I tests were run separately (i.e., the solutions did not contain both solutes). Sampling of the solid-solution mixtures occurred nominally after 0.2, 1, 3, 6, 9, 12, 15 days and ~35 to 45 days. Seven getter materials were tested for Tc and five materials were tested for I. The seven Tc getters were blast furnace slag 1 (BFS1) (northwest source), BFS2 (southeast source), Sn(II)-treated apatite, Sn(II) chloride, nano tin phosphate, KMS (a potassium-metal-sulfide), and tin hydroxapatite. The five iodine getters were layered bismuth hydroxide (LBH), argentite mineral, synthetic argentite, silver-treated carbon, and silver-treated zeolite. The Tc Kd values measured from experiments conducted using the 7.8 M Na LAW simulant (the simulant selected to represent LAW) for the first 15 days for four Tc getters (BFS1, BFS2, Sn(II)-treated apatite, and Sn(II) chloride) show no, to a very small, capacity to remove Tc from the LAW simulant. For the Tc-getter experiments in the 7.8 M LAW simulant, the majority of the effluent samples show very small drops in Tc concentrations for the 35-day compared to the 15-day samplings. However, the Tc concentration in the simulant blanks also dropped slightly during this period, so the effect of the getter contacting LAW simulant at 35 days compared to 15 days is minimal; except that the BFS1 1:10 test shows a slow but steady decrease in Tc concentration in the LAW simulant supernatant from the beginning to the 35 day contact at which point about 20% of the original Tc has been removed from solution. Lastly, the KMS getter gives the highest Kd value for Tc at 35 days where Kd values have increased to 104 mL/g. When considering the different I getters reacting with the 7.8 M LAW simulant, two getters are much more effective than the others: Ag zeolite and Syn Arg. The other getters have calculated iodide distribution coefficients that show very limited effectiveness in the caustic conditions created by the LAW simulant. These are preliminary results that will need more detailed analyses including both pre- and post-batch sorption getter solid-phase characterization using state-of-the-art instrumentation such as synchrotron X ray absorption spectroscopy, which can delineate the oxidation state of the Tc and likely iodine species as well as some of the getters key major components, sulfur and iron in the BFS, and tin and sulfur in the tin-bearing and sulfur-bearing getters. This report also describes future experimental studies to be performed to better elucidate the mechanisms controlling the Tc and I sequestration processes in the various getters and leach tests of getter-bearing Cast Stone monoliths.

Qafoku, Nikolla; Neeway, James J.; Lawter, Amanda R.; Levitskaia, Tatiana G.; Serne, R. Jeffrey; Westsik, Joseph H.; Snyder, Michelle MV

2014-07-01T23:59:59.000Z

180

NETL: News Release - DOE Transfers Steel Casting Technology to Rock Island  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

31, 2007 31, 2007 DOE Transfers Steel Casting Technology to Rock Island Arsenal Army Facility to Produce Improved Armor in War on Terrorism WASHINGTON, DC - A steel casting technology developed by the U.S. Department of Energy has been transferred to the U.S. Army's Rock Island Arsenal to manufacture improved armor for vehicles used in the global war on terrorism. MORE INFO Learn more about NETL's cooperative research with the Army The Office of Fossil Energy's National Energy Technology Laboratory (NETL) provided the Rock Island Arsenal with process guidelines, parameters, expertise, and patterns to set up and operate a facility for making steel castings using an NETL-developed process called loose-bonded sand, lost-foam technology. The facilities at the arsenal, in Rock Island, Ill.,

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Method and apparatus for casting conductive and semi-conductive materials  

DOE Patents [OSTI]

A method and apparatus is disclosed for casting conductive and semi-conductive materials. The apparatus includes a plurality of conductive members arranged to define a container-like area having a desired cross-sectional shape. A portion or all of the conductive or semi-conductive material which is to be cast is introduced into the container-like area. A means is provided for inducing the flow of an electrical current in each of the conductive members, which currents act collectively to induce a current flow in the material. The induced current flow through the conductive members is in a direction substantially opposite to the induced current flow in the material so that the material is repelled from the conductive members during the casting process.

Ciszek, T.F.

1984-08-13T23:59:59.000Z

182

Measurement of concrete E-modulus evolution since casting: A novel method based on ambient vibration  

SciTech Connect (OSTI)

The use of ambient vibration tests to characterize the evolution of E-modulus of concrete right after casting is investigated in this paper. A new methodology is proposed, which starts by casting a concrete cylindrical beam inside a hollow acrylic formwork. This beam is then placed horizontally, simply supported at both extremities, and vertical accelerations resulting from ambient vibration are measured at mid-span. Processing these mid-span acceleration time series using power spectral density functions allows a continuous identification of the first flexural frequency of vibration of the composite beam, which in turn is correlated with the evolutive E-modulus of concrete since casting. Together with experiments conducted with the proposed methodology, a complementary validation campaign for concrete E-modulus determination was undertaken by static loading tests performed on the composite beam, as well as by standard compressive tests of concrete cylinders of the same batch loaded at different ages.

Azenha, Miguel, E-mail: miguel.azenha@civil.uminho.p [LABEST - Laboratory for the Concrete Technology and Structural Behaviour, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal); ISISE - Institute for Sustainability and Innovation in Structural Engineering, Universidade do Minho, Escola de Engenharia, Campus de Azurem, 4800-058 Guimaraes (Portugal); Magalhaes, Filipe [VIBEST - Laboratory of Vibrations and Structural Monitoring, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal); Faria, Rui [LABEST - Laboratory for the Concrete Technology and Structural Behaviour, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal); Cunha, Alvaro [VIBEST - Laboratory of Vibrations and Structural Monitoring, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto (Portugal)

2010-07-15T23:59:59.000Z

183

Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Semiannual subcontract report, January 1--June 30, 1995  

SciTech Connect (OSTI)

The objective of this three-year program is to advance Solarex`s cast polycrystalline silicon manufacturing technology, reduce module production cost, increase module performance and expand Solarex`s commercial production capacities. Two specific objectives of this program are to reduce the manufacturing cost for polycrystalline silicon PV modules to less than $1.20/watt and to increase the manufacturing capacity by a factor of three. To achieve these objectives, Solarex is working in the following technical areas: casting, wire saws, cell process, module assembly, frameless module development, and automated cell handling. Accomplishments reported include: Cast first successful larger ingot producing 73% larger volume of usable Si; Increased the size of the ingot even further and cast an ingot yielding nine 11.4 {times} 11.4 cm bricks, representing a 125% increase in usable Si from a single casting; Operated the wire-saw in a semi-operational mode, producing 459,000 wafers at 94.1% overall yield; Reduced the cost of wire-saw consumables, spare parts, and waste disposal; Developed a cost-effective back surface field process that increases cell efficiency by 5% and began production trials; Developed a plan for increasing the capacity in the module assembly area; Completed qualification testing of modules built using Spire`s automated tabbing and stringing machine; Selected, tested, and qualified a low-cost electrical termination system; Completed long-term UV testing of experimental back sheets; Qualified the structure and adhesive-tape system for mounting frameless modules; and ARRI completed a study of the fracture properties of cast polycrystalline Si wafers and provided the information necessary to calculate the maximum stresses allowable during wafer handling.

Wohlgemuth, J. [Solarex Corp., Frederick, MD (United States)

1996-02-01T23:59:59.000Z

184

SunCast: Fine-grained Prediction of Natural Sunlight Levels for Improved Daylight Harvesting  

E-Print Network [OSTI]

Artificial lighting is the single largest energy consumer in commercial buildings, accounting for 26% of their total energy usage [1]. Daylight harvesting is the approach of us- ing natural sunlight inside promise for commercial buildings because they are Permission to make digital or hard copies of all or part

Whitehouse, Kamin

185

System and process for the abatement of casting pollution, reclaiming resin bonded sand, and/or recovering a low BTU fuel from castings  

DOE Patents [OSTI]

Air is caused to flow through the resin bonded mold to aid combustion of the resin binder to form a low BTU gas fuel. Casting heat is recovered for use in a waste heat boiler or other heat abstraction equipment. Foundry air pollution is reduced, the burned portion of the molding sand is recovered for immediate reuse and savings in fuel and other energy is achieved.

Scheffer, Karl D. (121 Governor Dr., Scotia, NY 12302)

1984-07-03T23:59:59.000Z

186

Exergy-based analysis and efficiency evaluation for an aluminum melting furnace in a die-casting plant  

Science Journals Connector (OSTI)

The efficiency of a natural gas-fired aluminum melting furnace in a die-casting plant is examined using energy and exergy methods, to improve understanding of the burner system in the furnace and so that potential improvements can be identified. Such ... Keywords: aluminum, die-casting, efficiency, energy, exergy, melting furnace

Marc A. Rosen; Dennis L. Lee

2009-02-01T23:59:59.000Z

187

Effect of Porosity on the Stiffness of Cast Steel RICHARD A. HARDIN and CHRISTOPH BECKERMANN  

E-Print Network [OSTI]

the location, amount, and size characteristics of micro- and macroporosity, an integrated design process service perfor- mance.[2] It is anticipated that such a design process will guide and improve inspection in cast metal due to porosity or inclusions are not considered directly in part design. Instead, ad

Beckermann, Christoph

188

Graphene/Carbon Nanotube Films Prepared by Solution Casting for Electrochemical Energy Storage  

Science Journals Connector (OSTI)

Graphene oxide/carbon nanotube (GO/CNT) films with different CNT contents were prepared by a solution-casting method. The oxygen-containing groups on the GO/CNT films were removed by thermal annealing at 200†įC and the corresponding hybrid ...

Juan-Juan Li; Yan-Wen Ma; Xu Jiang; Xiao-Miao Feng; Qu-Li Fan; Wei Huang

2012-01-01T23:59:59.000Z

189

The Power of The Dark Side: Using Cast Shadows for Visually-Guided Touching  

E-Print Network [OSTI]

that the cast shadow of a robot arm on a surface can be detected by a camera and used to derive a time-to-contact estimate. We achieve 3D control of a robot arm relative to an unmodelled surface by integrating shadow. Shadows can be very revealing!Robot sees target, arm, and arm's shadow Robot moves to reduce visual error

Torres-Jara, Eduardo

190

Significant Energy and Material Reductions in the Continuous Casting of Certain Copper Alloys  

E-Print Network [OSTI]

exclusively by fuel gas or oil, and are only 20% energy efficient. The proposed system will be 98% energy efficient and eliminate corrosive, polluting waste gases which cause porosity problems due to the entrapment of waste combustion gases in the casting...

Nielson, W. D.

191

Simulation of Stresses during Casting of Binary Magnesium-Aluminum Alloys  

E-Print Network [OSTI]

Simulation of Stresses during Casting of Binary Magnesium-Aluminum Alloys M.G. POKORNY, C.A. MONROE properties that are suitable for advanced stress modeling is even more limited for magnesium alloys. Recently of an AZ91 magnesium alloy in order to predict hot tears.[4] This study relied on crude estimates

Beckermann, Christoph

192

Reliability of Laser Welding Process for ZE41A-T5 Magnesium Alloy Sand Castings  

E-Print Network [OSTI]

Reliability of Laser Welding Process for ZE41A-T5 Magnesium Alloy Sand Castings Haider Al-Kazzaz1 for magnesium alloys. The process reliability of 2-mm ZE41A-T5 butt joints welded by a 4 kW Nd:YAG laser, reproducibility, Weibull distribution 1. Introduction The applications of magnesium alloys are expanding rapidly

Medraj, Mamoun

193

16th Century Cast-Bronze Ordnance at the Museu de Angra do Heroismo  

E-Print Network [OSTI]

Within the collections of the Museu de Angra do Heroismo (Terceira Island, Azores, Portugal) are nine cast bronze guns from the 16th century. Most were raised from the seafloor between the 1960s and 1990s, but this study comprises the first in...

Hoskins, Sara Grace

2004-09-30T23:59:59.000Z

194

Experimental: Gel Electrolyte The gel mixtures were designed to be cast as  

E-Print Network [OSTI]

Experimental: Gel Electrolyte The gel mixtures were designed to be cast as low viscosity solution and Frederik Krebs Polymer Solar Cell Initiative, The Danish Polymer Centre, Ris√ł National Laboratory, PO Box solar cell power extraction solving the problem of high current densities. LCs realized reach 1

195

Complete genome sequence of Peptoniphilus sp. strain ING2-D1G isolated from a mesophilic lab-scale completely stirred tank reactor utilizing maize silage in co-digestion with pig and cattle manure for biomethanation  

Science Journals Connector (OSTI)

Abstract The bacterium Peptoniphilus sp. strain ING2-D1G (DSM 28672), a mesophilic and obligate anaerobic bacterium belonging to the order Clostridiales was isolated from a biogas-producing lab-scale completely stirred tank reactor (CSTR) optimized for anaerobic digestion of maize silage in co-fermentation with pig and cattle manure. In this study, the whole genome sequence of Peptoniphilus sp. strain ING2-D1G, a new isolate potentially involved in protein breakdown and acidogenesis during biomass degradation, is reported. The chromosome of this strain is 1.6†Mb in size and encodes genes predicted to be involved in the production of acetate, lactate and butyrate specifying the acidogenic metabolism of the isolate.

Geizecler Tomazetto; Sarah Hahnke; Irena Maus; Daniel Wibberg; Alfred PŁhler; Andreas SchlŁter; Michael Klocke

2014-01-01T23:59:59.000Z

196

Physics-Based Stress Corrosion Cracking Component Reliability Model cast in  

Broader source: Energy.gov (indexed) [DOE]

Physics-Based Stress Corrosion Cracking Component Reliability Model Physics-Based Stress Corrosion Cracking Component Reliability Model cast in an R7-Compatible Cumulative Damage Framework Physics-Based Stress Corrosion Cracking Component Reliability Model cast in an R7-Compatible Cumulative Damage Framework The Risk-Informed Safety Margin Characterization (RISMC) pathway is a set of activities defined under the U.S. Department of Energy Light Water Reactor Sustainability Program. The overarching objective of RISMC is to support plant life-extension decision-making by providing a state-of-knowledge characterization of safety margins in key systems, structures, and components (SSCs). The methodology emerging from the RISMC pathway is not a conventional probabilistic risk assessment (PRA)-based one; rather, it relies on a reactor systems simulation framework in which

197

Physics-Based Stress Corrosion Cracking Component Reliability Model cast in  

Broader source: Energy.gov (indexed) [DOE]

Physics-Based Stress Corrosion Cracking Component Reliability Model Physics-Based Stress Corrosion Cracking Component Reliability Model cast in an R7-Compatible Cumulative Damage Framework Physics-Based Stress Corrosion Cracking Component Reliability Model cast in an R7-Compatible Cumulative Damage Framework The Risk-Informed Safety Margin Characterization (RISMC) pathway is a set of activities defined under the U.S. Department of Energy Light Water Reactor Sustainability Program. The overarching objective of RISMC is to support plant life-extension decision-making by providing a state-of-knowledge characterization of safety margins in key systems, structures, and components (SSCs). The methodology emerging from the RISMC pathway is not a conventional probabilistic risk assessment (PRA)-based one; rather, it relies on a reactor systems simulation framework in which

198

Technical Conference on the Criteria for Designation of NIETCs: Web Cast Final Attendee List  

Broader source: Energy.gov (indexed) [DOE]

WEB CAST FINAL ATTENDEE LIST WEB CAST FINAL ATTENDEE LIST Ram Adapa EPRI Email: radapa@epri.com Rahul Advani Energy Capital Partners Email: radvani@ecpartners.com Syed Ahmad FERC Email: Syed.Ahmad@ferc.gov John Ahr Allegheny Power Email: jahr@alleghenypower.com Lauren Andersen PJM Email: andersen@pjm.com Grace Anderson California Energy Commission Email: grace_anderson@energy.state.ca.us Christy Appleby PA Office of Consumer Advocate Email: cappleby@paoca.org Paul Bautista Discovery Insights LLC Email: paul.bautista@comcast.net Alan Bax MO Public Service Commission Email: alan.bax@psc.mo.gov David Beam North Carolina Electric Membership Corporation Email: david.beam@ncemcs.com Joel Bearden Cargill Power Markets, LLC Email: joel_bearden@cargill.com Candace Beery

199

A study on the oxidation characteristics of cast irons containing aluminum  

SciTech Connect (OSTI)

Isothermal-oxidation characteristics of cast irons containing aluminum (5-15% Al) from 700 to 1000{degrees}C in air have been studied. In addition to mass-gain measurements, the morphology and composition of the oxide scales have been examined by SEM-EDX system and XRD analysis. A normal Fe-5Al-C alloy does not develop protective, adherent scales. Even the addition of misch metal and calcium silicide to such an alloy does not improve its oxidation resistance. But aluminum cast iron develops considerable oxidation resistance only when a sufficient quantity of silicon is also present in the alloy. Treatment of the alloy with misch metal and calcium silicide together assists in protective scale formation. Among the alloys investigated Fe-15Al-Si-C treated with misch metal and calcium silicide shows minimum oxidation at 1000{degrees}C.

Ghosh, S.; Prodhan, A. [National Metallurigical Laboratory, Jamshedpur (India); Mohanty, O.N. [Tata Steel, Jamshedpur (India)] [and others

1996-02-01T23:59:59.000Z

200

Elimination or Minimization of Oscillation Marks: A Path To Improved Cast Surface Quality  

SciTech Connect (OSTI)

Oscillation marks are the most recognizable feature of continuous casting and can be related to the subsurface defects that can be found on product rolled from continuous cast slabs. The purpose of this work was to develop strategies that can be used on industrial continuous casters to reduce oscillation mark depth and, in particular, to minimize the formation of hook type defects that are prevalent on ultra low carbon grades. The major focus of the work was on developing a technique to allow heat transfer in the meniscus region of the continuous caster to be measured and the effect of mold slag chemistry and chrystallization to be documented. A new experimental technique was developed that allowed the effect of mold flux chemistry and chrystallization on the radiation heat transfer rate to be measured dynamically.

Dr. Alan W. Cramb

2007-12-17T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Ultrasonic Sound Field Mapping Through Coarse Grained Cast Austenitic Stainless Steel Components  

SciTech Connect (OSTI)

The Pacific Northwest National Laboratory (PNNL) has been involved with nondestructive examination (NDE) of coarse-grained cast austenitic stainless steel (CASS) components for over 30 years. More recent work has focused on mapping the ultrasonic sound fields generated by low-frequency phased array probes that are typically used for the evaluation of CASS materials for flaw detection and characterization. The casting process results in the formation of large grained material microstructures that are nonhomogeneous and anisotropic. The propagation of ultrasonic energy for examination of these materials results in scattering, partitioning and redirection of these sound fields. The work reported here provides an assessment of sound field formation in these materials and provides recommendations on ultrasonic inspection parameters for flaw detection in CASS components.

Crawford, Susan L.; Prowant, Matthew S.; Cinson, Anthony D.; Larche, Michael R.; Diaz, Aaron A.

2014-08-01T23:59:59.000Z

202

Analytical calculation of detailed model parameters of cast resin dry-type transformers  

Science Journals Connector (OSTI)

Non-flammable characteristic of cast resin dry-type transformers make them suitable for different kind of usages. This paper presents an analytical method of how to obtain parameters of detailed model of these transformers. The calculated parameters are compared and verified with the corresponding FEM results and if it was necessary, correction factors are introduced for modification of the analytical solutions. Transient voltages under full and chopped test impulses are calculated using the obtained detailed model. In order to validate the model, a setup was constructed for testing on high-voltage winding of cast resin dry-type transformer. The simulation results were compared with the experimental data measured from FRA and impulse tests.

M. Eslamian; B. Vahidi; S.H. Hosseinian

2011-01-01T23:59:59.000Z

203

Effects of alloying elements on microstructure, hardness, and fracture toughness of centrifugally cast high-speed steel rolls  

Science Journals Connector (OSTI)

A study was made of the effects of alloying elements on the microstructure, hardness, and fracture toughness of centrifugally cast high-speed steel (HSS) rolls. Particular emphasis was placed on the role of ha...

Chang Kyu Kim; Yong Chan Kim; Jong Il ParkÖ

2005-01-01T23:59:59.000Z

204

The influence of load and surface treatment on the corrosive wear of cast iron in oil-sulphuric acid environments  

Science Journals Connector (OSTI)

An investigation into the influence of load and surface finish on the reciprocating corrosive wear of grey cast iron in oil-10 ... between cylinder-lining and piston-ring materials from marine diesel engines. In ...

A. G. Macdonald; F. H. Stott

1988-02-01T23:59:59.000Z

205

Microstructure and residual stress evaluation of ductile cast iron using the critically refracted longitudinal (Lcr) wave propagation technique  

E-Print Network [OSTI]

Residual stress and microstructure evaluation of ductile cast iron using a nondestructive method (Critically Refracted Longitudinal Ultrasonic Wave Technique) was approached. Residual stresses, both good and bad graphite nodules, and different...

Bennett, Robert Jeffrey

2012-06-07T23:59:59.000Z

206

Integrating 3D Layered Manufacturing with Photonic Sintering, Precision Machining and Smart Coating Techniques for Rapid Casting Applications.  

E-Print Network [OSTI]

?? Developments in rapid casting technologies have led to a new era of inclusion of 3D printing. Three-Dimensional (3D) printing provides the flexibility and easeÖ (more)

Bohra, Hemant

2014-01-01T23:59:59.000Z

207

Nonaqueous composition for slip casting or cold forming refractory material into solid shapes  

SciTech Connect (OSTI)

A composition is described for slip casting or cold forming non-oxide refractory material(s) into solid shape comprising finely divided solid refractory materials selected from the group consisting of metal boride, refractory carbide, nitride, silicide and a refractory metal of tungsten, molybdenum, tantalum and chromium suspended in a nonaqueous liquid slip composition consisting essentially of a deflocculent composed of a vinyl chloride-vinyl acetate resin dissolved in an organic solvent.

Montgomery, L.C.

1993-08-24T23:59:59.000Z

208

Vacuum-induction melting, refining, and casting of uranium and its alloys  

SciTech Connect (OSTI)

The vacuum-induction melting (VIM), refining, and casting of uranium and its alloys are discussed. Emphasis is placed on historical development, VIM equipment, crucible and mold design, furnace atmospheres, melting parameters, impurity pickup, ingot quality, and economics. The VIM procedures used to produce high-purity, high-quality sound ingots at the US Department of Energy Rocky Flats Plant are discussed in detail.

Jackson, R.J.

1989-10-11T23:59:59.000Z

209

Mortuary rites of the South Fore and kuru  

Science Journals Connector (OSTI)

...the pollution was contained in the burial pit. If the body was eaten, the kwela remained...sent to the sepulture, which was the fire pit where the body was cooked. Igoghana normally...of the deceased was placed over a fire to burn off the hair and then it was de-fleshed...

2008-01-01T23:59:59.000Z

210

In Taiwan, the private sector comes to the fore  

SciTech Connect (OSTI)

The petrochemical industry of Taiwan has played a major role in the country's development. Production value grew from $54 billion in 1990, or 32.8% of the total manufacturing sector, to $6.1 billion last year, an increase of more than 6%/year. Export value in 1990 reached $18.8 billion. Despite the need to import most of the raw materials, the industry has enjoyed healthy development due to cooperation among the upstream and downstream producers, and strong downstream processing capacity. The northern petrochemical complex is at Toufen; the southern complexes are located at Tasheh, Jenwu, and Linyuan. Until now the entire upstream industry has been in the hands of state-owned Chinese Petroleum Corp. (CPC; Taipei), which has little involvement in downstream affiliates are China Petrochemical Development Corp. (CPDC), in which it has a 76.4% stake, and China American Petrochemical Co. Ltd. (Capco), of which it owns 25%.

Alperowicz, N.

1993-01-20T23:59:59.000Z

211

Replication of engine block cylinder bridge microstructure and mechanical properties with lab scale 319 Al alloy billet castings  

SciTech Connect (OSTI)

In recent years, aluminum alloy gasoline engine blocks have in large part successfully replaced nodular cast iron engine blocks, resulting in improved vehicle fuel efficiency. However, because of the inadequate wear resistance properties of hypoeutectic AlĖSi alloys, gray iron cylinder liners are required. These liners cause the development of large tensile residual stress along the cylinder bores and necessitate the maximization of mechanical properties in this region to prevent premature engine failure. The aim of this study was to replicate the engine cylinder bridge microstructure and mechanical properties following TSR treatment (which removes the sand binder to enable easy casting retrieval) using lab scale billet castings of the same alloy composition with varying cooling rates. Comparisons in microstructure between the engine block and the billet castings were carried out using optical and scanning electron microscopy, while mechanical properties were assessed using tensile testing. The results suggest that the microstructure at the top and middle of the engine block cylinder bridge was successfully replicated by the billet castings. However, the microstructure at the bottom of the cylinder was not completely replicated due to variations in secondary phase morphology and distribution. The successful replication of engine block microstructure will enable the future optimization of heat treatment parameters. - Highlights: ē A method to replicate engine block microstructure was developed. ē Billet castings will allow cost effective optimization of heat treatment process. ē The replication of microstructure in the cylinder region was mostly successful. ē Porosity was more clustered in the billet castings compared to the engine block. ē Mechanical properties were lower in billet castings due to porosity and inclusions.

Lombardi, A., E-mail: a2lombar@ryerson.ca [Centre for Near-net-shape Processing of Materials, Ryerson University, 101 Gerrard Street East, Toronto, Ontario M5B2K3 (Canada); D'Elia, F.; Ravindran, C. [Centre for Near-net-shape Processing of Materials, Ryerson University, 101 Gerrard Street East, Toronto, Ontario M5B2K3 (Canada); MacKay, R. [Nemak of Canada Corporation, 4600 G.N. Booth Drive, Windsor, Ontario N9C4G8 (Canada)

2014-01-15T23:59:59.000Z

212

Finite Element Modelling of the Sawing of DC Cast AA2024 Aluminium Alloy Slabs  

SciTech Connect (OSTI)

In the semi-continuous casting of large cross-section rolling sheet ingots of high-strength aluminum alloys (2xxx and 7xxx series), the control of the residual (internal) stresses generated by the non-uniform cooling becomes a necessity. These stresses must be relieved by a thermal treatment before the head and foot of the ingot can be cut. Otherwise, the saw can be caught owing to compressive stresses or cut parts may be ejected thus injuring people or damaging equipment. These high added-value ingots need to be produced in secure conditions. Moreover, a better control of the sawing procedure could allow the suppression of the thermal treatment and therefore save time and energy. By studying the stress build-up during casting and the stress relief during sawing, key parameters for the control and optimization of the processing steps, can be derived. To do so, the direct chill (DC) casting of the AA2024 alloy is modeled with ABAQUS 6.5 with special attention to the thermo-mechanical properties of the alloy. The sawing operation is then simulated by removing mesh elements so as to reproduce the progression of the saw in the ingot. Preliminary results showing the stress relief during sawing accompanied by the risk of saw blocking due to compression or initiating a crack ahead of the saw, are analyzed with an approach based on the rate of strain energy release.

Drezet, J.-M. [Computational Materials Laboratory, School of Engineering, Ecole Polytechnique Federale de Lausanne, Station 12, CH-1015 Lausanne (Switzerland); Ludwig, O. [Calcom-ESI SA, PSE-A, CH-1015 Lausanne (Switzerland); Heinrich, B. [Alcan Aluminium Valais SA, CH3960 Sierre (Switzerland)

2007-04-07T23:59:59.000Z

213

Assessment of Computer Simulation Software and Process Data for High Pressure Die Casting of Magnesium  

SciTech Connect (OSTI)

Computer software for the numerical simulation of solidification and mold filling is an effective design tool for cast structural automotive magnesium components. A review of commercial software capabilities and their validation procedures was conducted. Aside form the software assessment, the program addressed five main areas: lubricant degradation, lubricant application, gate atomization, and heat transfer at metal mold interfaces. A test stand for lubricant application was designed. A sensor was used for the direct measurement of heat fluxes during lubricant application and casting solidification in graphite molds. Spray experiments were conducted using pure deionized water and commercial die lubricants. The results show that the sensor can be used with confidence for measuring heat fluxes under conditions specific to the die lube application. The data on heat flux was presented in forms suitable for use in HPDC simulation software. Severe jet breakup and atomization phenomena are likely to occur due to high gate velocities in HPDC. As a result of gate atomization, droplet flow affects the mold filling pattern, air entrapment, skin formation, and ensuing defects. Warm water analogue dies were designed for obtaining experimental data on mold filling phenomena. Data on break-up jet length, break-up pattern, velocities, and droplet size distribution were obtained experimentally and was used to develop correlations for jet break-up phenomena specific to die casting gate configurations.

Sabau, Adrian S [ORNL; Hatfield, Edward C [ORNL; Dinwiddie, Ralph Barton [ORNL; Kuwana, Kazunori [University of Kentucky; Viti, Valerio [University of Kentucky, Lexington; Hassan, Mohamed I [University of Kentucky, Lexington; Saito, Kozo [University of Kentucky

2007-09-01T23:59:59.000Z

214

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast-iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1--Program Management and Task 2--were completed in prior quarters while Task 3--Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves has progressed to installing prototype sleeves in cast iron test pipe segments. Efforts in this quarter continued to focus on Tasks 4--8, with significant progress made in each. Task 4 (Design, Fabricate and Test Patch Setting Robotic Train) progressed to the design of the control electronics and pneumatic system to inflate the bladder robotic patch setting module. Task 5 (Design & Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera) continued with additional in-pipe testing required to optimize the design of the robot elements and surface control electronics and software. Task 6 (Design & Build Surface Control and Monitoring System) has been completed with the control and computer display functions being operated through LabView. Task 7 (Design & Fabricate Large Diameter Live Access System) progressed to completing the detailed design of the entry fitting for 12-inch diameter cast iron pipe. The fitting is now being placed into manufacture. Task 8--System Integration and Laboratory Validation continued developing the robot module inter-connects and development of a master LabView-based system display and control software.

Kiran M. Kothari; Gerard T. Pittard

2004-04-01T23:59:59.000Z

215

Assessment of Crack Detection in Heavy-Walled Cast Stainless Steel Piping Welds Using Advanced Low-Frequency Ultrasonic Methods  

SciTech Connect (OSTI)

Studies conducted at the Pacific Northwest National Laboratory in Richland, Washington, have focused on assessing the effectiveness and reliability of novel approaches to nondestructive examination (NDE) for inspecting coarse-grained, cast stainless steel reactor components. The primary objective of this work is to provide information to the U.S. Nuclear Regulatory Commission on the effectiveness and reliability of advanced NDE methods as related to the inservice inspection of safety-related components in pressurized water reactors (PWRs). This report provides progress, recent developments, and results from an assessment of low frequency ultrasonic testing (UT) for detection of inside surface-breaking cracks in cast stainless steel reactor piping weldments as applied from the outside surface of the components. Vintage centrifugally cast stainless steel piping segments were examined to assess the capability of low-frequency UT to adequately penetrate challenging microstructures and determine acoustic propagation limitations or conditions that may interfere with reliable flaw detection. In addition, welded specimens containing mechanical and thermal fatigue cracks were examined. The specimens were fabricated using vintage centrifugally cast and statically cast stainless steel materials, which are typical of configurations installed in PWR primary coolant circuits. Ultrasonic studies on the vintage centrifugally cast stainless steel piping segments were conducted with a 400-kHz synthetic aperture focusing technique and phased array technology applied at 500 kHz, 750 kHz, and 1.0 MHz. Flaw detection and characterization on the welded specimens was performed with the phased array method operating at the frequencies stated above. This report documents the methodologies used and provides results from laboratory studies to assess baseline material noise, crack detection, and length-sizing capability for low-frequency UT in cast stainless steel piping.

Anderson, Michael T.; Crawford, Susan L.; Cumblidge, Stephen E.; Denslow, Kayte M.; Diaz, Aaron A.; Doctor, Steven R.

2007-03-01T23:59:59.000Z

216

Development of Integrated Die Casting Process for Large Thin-Wall Magnesium Applications Enabling Production of Lightweight Magnesium Parts for Near-Term Automotive Applications, April 2013  

Broader source: Energy.gov [DOE]

Development of Integrated Die Casting Process for Large Thin-Wall Magnesium Applications Enabling Production of Lightweight Magnesium Parts for Near-Term Automotive Applications

217

Detection and location of partial discharge in cast-resin dry-type transformers using a waveguide and a new acoustic emission sensor pair design  

Science Journals Connector (OSTI)

The acoustic emission (AE) method could be used to detect and locate partial discharges (PD) in cast-resin dry-type transformers. However, due to the high...

Ching-chau Su; Ya-wen Tang; Cheng-chi TaiÖ

2011-04-01T23:59:59.000Z

218

International Energy Outlook 1998  

Gasoline and Diesel Fuel Update (EIA)

8) 8) Dis tri bu tion Cate gory UC-950 In ter na tional En ergy Out look 1998 April 1998 En ergy In for ma tion Ad min istra tion Of fice of In te grated Analy sis and Fore cast ing U.S. De part ment of En ergy Wash ing ton, DC 20585 This re port was pre pared by the En ergy In for ma tion Ad min istra tion, the in de pend ent sta tis ti cal and ana lyti cal agency within the De part ment of En ergy. The in for ma tion con tained herein should be at trib uted to the En ergy In for ma tion Ad min istra tion and should not be con strued as ad vo cat ing or re flect ing any pol icy po si tion of the De part ment of En ergy or of any other or gani za tion. Con tacts The Inter na tional Energy Out look is pre pared by the Energy Infor ma tion Admin istra tion (EIA). Gen eral

219

Effects of Sc content on the microstructure of As-Cast Al-7 wt.% Si alloys  

SciTech Connect (OSTI)

The effects of Sc content on the microstructure of as-cast Al-Si alloys were investigated by adding 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, and 0.4 wt.% Sc to hypoeutectic Al-7 wt.% Si alloys. The results show that there are significant changes in the microstructure when the Sc content is increased to 0.15%. The volume fraction of the primary {alpha}-Al phase increased nearly monotonically with increasing Sc content in the as-cast state. As the Sc content increased, the average length of the eutectic Si in the as-cast Al-7Si-xSc alloy decreased sharply from 150 {mu}m (without Sc content) to 20 {mu}m (0.4 wt.% Sc content). The Sc atoms are concentrated in the interdendritic regions. A fish-bone structure composed of Al, Si, Sc, and Fe, which might be the Fe-rich phase precipitated on the AlSc{sub 2}Si{sub 2} (V-phase) was detected adjacent to the grain boundary by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). - Highlights: Black-Right-Pointing-Pointer Significant changes in the microstructure when the Sc content is increased to 0.15%. Black-Right-Pointing-Pointer Volume fraction of the primary a-Al phase increased with increasing Sc content. Black-Right-Pointing-Pointer Average length of Si decreased sharply from 150 to 20 {mu}m with increasing Sc content. Black-Right-Pointing-Pointer The Sc atoms are concentrated in the interdendritic regions.

Zhang Wenda, E-mail: zwdno@139.com [School of Materials Science and Engineering, North University of China, Taiyuan 030051 (China); Liu Yun, E-mail: liuyun@nuc.edu.cn [School of Materials Science and Engineering, North University of China, Taiyuan 030051 (China); Yang Jing; Dang Jinzhi; Xu Hong [School of Materials Science and Engineering, North University of China, Taiyuan 030051 (China); Du Zhenmin [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China)

2012-04-15T23:59:59.000Z

220

Assessment of Crack Detection in Cast Austenitic Piping Components Using Advanced Ultrasonic Methods.  

SciTech Connect (OSTI)

Studies conducted at the Pacific N¨orthwest National Laboratory (PNNL) in Richland, Washington, have focused on developing and evaluating the reliability of nondestructive examination (NDE) approaches for inspecting coarse-grained, cast stainless steel reactor components. The objective of this work is to provide information to the United States Nuclear Regulatory Commission (NRC) on the utility, effec¨tiveness and limitations of ultrasonic testing (UT) inspection techniques as related to the in-service inspec¨tion of primary system piping components in pressurized water reactors (PWRs). Cast stainless steel pipe specimens were examined that contain thermal and mechanical fatigue cracks located close to the weld roots and have inside/outside surface geometrical conditions that simulate several PWR primary piping configurations. In addition, segments of vintage centrifugally cast piping were also examined to understand inherent acoustic noise and scattering due to grain structures and determine consistency of UT responses from different locations. The advanced UT methods were applied from the outside surface of these specimens using automated scanning devices and water coupling. The low-frequency ultrasonic method employed a zone-focused, multi-incident angle inspection protocol (operating at 250-450 kHz) coupled with a synthetic aperture focusing technique (SAFT) for improved signal-to-noise and advanced imaging capabilities. The phased array approach was implemented with a modified instrument operating at 500 kHz and composite volumetric images of the specimens were generated. Re¨sults from laboratory studies for assessing detection, localization and sizing effectiveness are discussed in this paper.

Anderson, Michael T.; Crawford, Susan L.; Cumblidge, Stephen E.; Diaz, Aaron A.; Doctor, Steven R.

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Energy Saving Melting and Revert Reduction Technology (Energy SMARRT): Manufacturing Advanced Engineered Components Using Lost Foam Casting Technology  

SciTech Connect (OSTI)

This project was a subtask of Energy Saving Melting and Revert Reduction Technology (√?¬Ę√?¬?√?¬?Energy SMARRT√?¬Ę√?¬?√?¬Ě) Program. Through this project, technologies, such as computer modeling, pattern quality control, casting quality control and marketing tools, were developed to advance the Lost Foam Casting process application and provide greater energy savings. These technologies have improved (1) production efficiency, (2) mechanical properties, and (3) marketability of lost foam castings. All three reduce energy consumption in the metals casting industry. This report summarizes the work done on all tasks in the period of January 1, 2004 through June 30, 2011. Current (2011) annual energy saving estimates based on commercial introduction in 2011 and a market penetration of 97% by 2020 is 5.02 trillion BTU√?¬Ę√?¬?√?¬?s/year and 6.46 trillion BTU√?¬Ę√?¬?√?¬?s/year with 100% market penetration by 2023. Along with these energy savings, reduction of scrap and improvement in casting yield will result in a reduction of the environmental emissions associated with the melting and pouring of the metal which will be saved as a result of this technology. The average annual estimate of CO2 reduction per year through 2020 is 0.03 Million Metric Tons of Carbon Equivalent (MM TCE).

Harry Littleton; John Griffin

2011-07-31T23:59:59.000Z

222

pn-CCDs in a Low-Background Environment: Detector Background of the CAST X-ray Telescope  

E-Print Network [OSTI]

The CAST experiment at CERN (European Organization of Nuclear Research) searches for axions from the sun. The axion is a pseudoscalar particle that was motivated by theory thirty years ago, with the intention to solve the strong CP problem. Together with the neutralino, the axion is one of the most promising dark matter candidates. The CAST experiment has been taking data during the last two years, setting an upper limit on the coupling of axions to photons more restrictive than from any other solar axion search in the mass range below 0.1 eV. In 2005 CAST will enter a new experimental phase extending the sensitivity of the experiment to higher axion masses. The CAST experiment strongly profits from technology developed for high energy physics and for X-ray astronomy: A superconducting prototype LHC magnet is used to convert potential axions to detectable X-rays in the 1-10 keV range via the inverse Primakoff effect. The most sensitive detector system of CAST is a spin-off from space technology, a Wolter I ty...

Kuster, M; CebriŠn, S; Franz, J; Friedrich, P; Hartmann, R; Kang, D; Kotthaus, R; Lutz, Gerhard; Rodriquez, A; StrŁder, L

2005-01-01T23:59:59.000Z

223

Investment casting of {gamma}-TiAl-based alloys: Microstructure and data base for gas turbine applications  

SciTech Connect (OSTI)

Investment casting is regarded as an economic processing technology for the production of {gamma}-TiAl based components for gas turbine applications. Near net-shape parts can be cast such that they are free from pores and flaws after adequate `HIP`ping. The inhomogeneous cast microstructure which results from locally varying cooling rates (e.g. in the root and foil of a blade), however, is often retained even after heat-treatments necessary to achieve a balance of properties for a given application. Appropriate modifications of the alloy chemistry may lead to an improved microstructural homogeneity in the cast parts. Data bases of properties (tensile properties, creep, fatigue and rupture strength, fracture and impact toughness, oxidation and corrosion resistance) which are relevant for potential gas turbine applications have been assessed for different cast {gamma}-TiAl alloys with different microstructures. These are compared with corresponding properties of nickel-based and iron-based superalloys {gamma}-TiAl is competing with for substitution.

Wagner, R.; Appel, F.; Dogan, B. [GKSS Research Center, Geesthacht (Germany). Inst. for Materials Research] [and others

1995-12-31T23:59:59.000Z

224

Fracture toughness studies of gray and ductile cast irons using a J-integral approach  

E-Print Network [OSTI]

, and silicon in which more carbon is present than can be retained in solid solution in austenite at the eutectic temperature. In gray cast iron, the iron and carbon solidify as a eutectic structure whose two phases are graphite and iron. Gray iron usually... contains from 1. 7 to 4. 5% carbon and 1 to 3% silicon. 27 The normal microstructure of gray iron is a matrix of pearlite (ferrite and cementite) with the graphite flakes dispersed throughout. Among the properties that the flake graphite 28 in gray...

Floyd, Donna Lynne Woodall

2012-06-07T23:59:59.000Z

225

Cast Stone Oxidation Front Evaluation: Preliminary Results For Samples Exposed To Moist Air  

SciTech Connect (OSTI)

The rate of oxidation is important to the long-term performance of reducing salt waste forms because the solubility of some contaminants, e.g., technetium, is a function of oxidation state. TcO{sub 4}{sup ?} in the salt solution is reduced to Tc(IV) and has been shown to react with ingredients in the waste form to precipitate low solubility sulfide and/or oxide phases. Upon exposure to oxygen, the compounds containing Tc(IV) oxidize to the pertechnetate ion, Tc(VII)O{sub 4}{sup ?}, which is very soluble. Consequently the rate of technetium oxidation front advancement into a monolith and the technetium leaching profile as a function of depth from an exposed surface are important to waste form performance and ground water concentration predictions. An approach for measuring contaminant oxidation rate (effective contaminant specific oxidation rate) based on leaching of select contaminants of concern is described in this report. In addition, the relationship between reduction capacity and contaminant oxidation is addressed. Chromate (Cr(VI) was used as a non-radioactive surrogate for pertechnetate, Tc(VII), in Cast Stone samples prepared with 5 M Simulant. Cast Stone spiked with pertechnetate was also prepared and tested. Depth discrete subsamples spiked with Cr were cut from Cast Stone exposed to Savannah River Site (SRS) outdoor ambient temperature fluctuations and moist air. Depth discrete subsamples spiked with Tc-99 were cut from Cast Stone exposed to laboratory ambient temperature fluctuations and moist air. Similar conditions are expected to be encountered in the Cast Stone curing container. The leachability of Cr and Tc-99 and the reduction capacities, measured by the Angus-Glasser method, were determined for each subsample as a function of depth from the exposed surface. The results obtained to date were focused on continued method development and are preliminary and apply to the sample composition and curing / exposure conditions described in this report. The Cr oxidation front (depth to which soluble Cr was detected) for the Cast Stone sample exposed for 68 days to ambient outdoor temperatures and humid air (total age of sample was 131 days) was determined to be about 35 mm below the top sample surface exposed. The Tc oxidation front, depth at which Tc was insoluble, was not determined. Interpretation of the results indicates that the oxidation front is at least 38 mm below the exposed surface. The sample used for this measurement was exposed to ambient laboratory conditions and humid air for 50 days. The total age of the sample was 98 days. Technetium appears to be more easily oxidized than Cr in the Cast Stone matrix. The oxidized forms of Tc and Cr are soluble and therefore leachable. Longer exposure times are required for both the Cr and Tc spiked samples to better interpret the rate of oxidation. Tc spiked subsamples need to be taken further from the exposed surface to better define and interpret the leachable Tc profile. Finally Tc(VII) reduction to Tc(IV) appears to occur relatively fast. Results demonstrated that about 95 percent of the Tc(VII) was reduced to Tc(IV) during the setting and very early stage setting for a Cast Stone sample cured 10 days. Additional testing at longer curing times is required to determine whether additional time is required to reduce 100 % of the Tc(VII) in Cast Stone or whether the Tc loading exceeded the ability of the waste form to reduce 100 % of the Tc(VII). Additional testing is required for samples cured for longer times. Depth discrete subsampling in a nitrogen glove box is also required to determine whether the 5 percent Tc extracted from the subsamples was the result of the sampling process which took place in air. Reduction capacity measurements (per the Angus-Glasser method) performed on depth discrete samples could not be correlated with the amount of chromium or technetium leached from the depth discrete subsamples or with the oxidation front inferred from soluble chromium and technetium (i.e., effective Cr and Tc oxidation fronts). Residual reduction capacity

Langton, C. A.; Almond, P. M.

2013-11-26T23:59:59.000Z

226

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple castiron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1 (Program Management) and Task 2 (Establishment of Detailed Design Specifications) were completed in prior quarters while Task 3 (Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves) has progressed to installing prototype sleeves in cast iron test pipe segments. Efforts in this quarter continued to focus on Tasks 4-8, with significant progress made in each. Task 4 (Design, Fabricate and Test Patch Setting Robotic Train) progressed to the design of the control electronics and pneumatic system to inflate the bladder robotic patch setting module. Task 5 (Design & Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera) continued with additional in-pipe testing required to optimize the design of the robot elements and surface control electronics and software. Task 6 (Design & Build Surface Control and Monitoring System) has been completed with the control and computer display functions being operated through LabView. Task 7 (Design & Fabricate Large Diameter Live Access System) progressed to completing the detailed design of the entry fitting for 12-inch diameter cast iron pipe. The fitting is now being manufactured. The 12-inch ball valve for allowing no-blow access was also procured. Task 8 (System Integration and Laboratory Validation) continued with the development of the robot module inter-connects and of a master LabView-based system display and control software.

Kiran M Kothari; Gerard T. Pittard

2004-07-01T23:59:59.000Z

227

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1--Program Management and Task 2--were completed in prior quarters while Task 3--Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves has progressed to installing prototype sleeves in cast iron test pipe segments. Efforts in this quarter continued to focus on Tasks 4--8, with significant progress made in each. Task 4 (Design, Fabricate and Test Patch Setting Robotic Train) progressed to the design of the control electronics and pneumatic system to inflate the bladder robotic patch setting module. Task 5 (Design & Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera) continued with additional in-pipe testing required to optimize the design of the robot elements and surface control electronics and software. Task 6 (Design & Build Surface Control and Monitoring System) has been completed with the control and computer display functions being operated through LabView. Task 7 (Design & Fabricate Large Diameter Live Access System) progressed to the design, fabrication and testing of a entry fitting in a 4-inch prototype and is now being used to complete drawings for use in 12-inch diameter pipe. Task 8--System Integration and Laboratory Validation continued developing the robot module inter-connects and development of a master LabView-based system display and control software.

Kiran M. Kothari, Gerard T. Pittard

2004-01-01T23:59:59.000Z

228

Casting pearls  

Science Journals Connector (OSTI)

... the black, and his chocolate-coated nuggets of science will continue to entertain and do surreptitious good. He is, moreover, a deft hand with the literary quote; but to ...

Walter Gratzer

1991-08-15T23:59:59.000Z

229

Automated Flaw Detection Scheme For Cast Austenitic Stainless Steel Weld Specimens Using Hilbert Huang Transform Of Ultrasonic Phased Array Data  

SciTech Connect (OSTI)

The objective of this work is to develop processing algorithms to detect and localize the flaws using NDE ultrasonic data. Data was collected using cast austenitic stainless steel (CASS) weld specimens on-loan from the U.S. nuclear power industryís Pressurized Water Reactor Owners Group (PWROG) specimen set. Each specimen consists of a centrifugally cast stainless steel (CCSS) pipe section welded to a statically cast (SCSS) or wrought (WRSS) section. The paper presents a novel automated flaw detection and localization scheme using low frequency ultrasonic phased array inspection signals in the weld and heat affected zone of the base materials. The major steps of the overall scheme are preprocessing and region of interest (ROI) detection followed by the Hilbert Huang transform (HHT) of A-scans in the detected ROIs. HHT offers time-frequency-energy distribution for each ROI. The accumulation of energy in a particular frequency band is used as a classification feature for the particular ROI.

Khan, T.; Majumdar, Shantanu; Udpa, L.; Ramuhalli, Pradeep; Crawford, Susan L.; Diaz, Aaron A.; Anderson, Michael T.

2012-01-01T23:59:59.000Z

230

Performance of a real-time local thermal management system for casting dies with multiple cooling channels  

Science Journals Connector (OSTI)

In high-pressure die casting processes, proper control of die temperature is essential for producing superior quality components and yielding high production rates. Very often it is impractical to control die temperature to a specific point during solidification stages. In this paper, a computerised Intelligent Real-Time Monitoring and Control System (IRMCS) is developed for die casting processes involving cooling of a die with multiple channels. A local temperature controller is designed to confine temperature fluctuations of a die within a desirable range. The performance of the system is evaluated through a laboratory die casting process simulator in terms of measurement accuracy, time delay and local heat removal rate. The experimental results indicate that the developed control system is capable of adjusting the desirable supply of cooling water into multiple cooling lines. Hence, the ideal thermal pattern of the die becomes achievable.

Tiebao Yang; Henry Hu; Xiang Chen; Yeou-li Chu; Patrick Cheng

2007-01-01T23:59:59.000Z

231

Results and perspectives of the solar axion search with the CAST experiment  

E-Print Network [OSTI]

The status of the solar axion search with the CERN Axion Solar Telescope (CAST) will be presented. Recent results obtained by the use of $^3$He as a buffer gas has allowed us to extend our sensitivity to higher axion masses than our previous measurements with $^4$He. With about 1 h of data taking at each of 252 different pressure settings we have scanned the axion mass range 0.39 eV$ \\le m_{a} \\le $ 0.64 eV. From the absence of an excess of x rays when the magnet was pointing to the Sun we set a typical upper limit on the axion-photon coupling of g$_{a\\gamma} \\le 2.3\\times 10^{-10}$ GeV$^{-1}$ at 95% C.L., the exact value depending on the pressure setting. CAST published results represent the best experimental limit on the photon couplings to axions and other similar exotic particles dubbed WISPs (Weakly Interacting Slim Particles) in the considered mass range and for the first time the limit enters the region favored by QCD axion models. Preliminary sensitivities for axion masses up to 1.16 eV will also be s...

Ferrer-Ribas, E; Aune, S; Barth, K; Belov, A; Borghi, S; Bršuninger, H; Cantatore, G; Carmona, J M; Cetin, S A; Collar, J I; Dafni, T; Davenport, M; Eleftheriadis, C; Elias, N; Ezer, C; Fanourakis, G; Friedrich, P; GalŠn, J; GarcŪa, J A; Gardikiotis, A; Gazis, E N; Geralis, T; Giomataris, I; Gninenko, S; Gůmez, H; Gruber, E; GuthŲrl, T; Hartmann, R; Haug, F; Hasinoff, M D; Hoffmann, D H H; Iguaz, F J; Irastorza, I G; Jacoby, J; Jakov\\vci?, K; Karuza, M; KŲnigsmann, K; Kotthaus, R; Kr?mar, M; Kuster, M; Laki?, B; Laurent, J M; Liolios, A; Ljubi?i?, A; Lozza, V; Lutz, G; Luzůn, G; Morales, J; Niinikoski, T; Nordt, A; Papaevangelou, T; Pivovaroff, M J; Raffelt, G; Rashba, T; Riege, H; RodrŪguez, A; Rosu, M; Ruz, J; Savvidis, I; Silva, P S; Solanki, S K; Stewart, L; TomŠs, A; Tsagri, M; van Bibber, K; Vafeiadis, T; Villar, J; Vogel, J K; Yildiz, S C; Zioutas, K

2012-01-01T23:59:59.000Z

232

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. Bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple castiron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs with the pipe in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, minimize excavation, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of old cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct safe repair operations on live mains.

Kiran M. Kothari; Gerard T. Pittard

2005-07-01T23:59:59.000Z

233

Machinability of clean thin-wall gray and ductile iron castings. Final report  

SciTech Connect (OSTI)

First phase was to develop a laboratory technique for evaluating the machinability of gray and ductile iron; longer term goal is to learn how to modify the foundry process to produce castings meeting all specified mechanical properties while providing improved machining behavior. Microcarbides present in the irons were found to dominate the machinability of iron. Pearlitic irons with acceptable machinability contain 8.9 to 10.5 wt% microcarbides. The weight fraction microcarbides in the iron is influenced by carbide forming element concentrations, presence of elements that retard carbon diffusion, and cooling rate from the eutectic through the eutectoid temperature range. Tool wear rate increased at higher surface machining speeds and fraction microcarbides; all irons containing above 11.5% microcarbides had poor machinability. Graphite size, shape, distribution, etc. had a lesser effect on machinability. Reducing the addition of a foundry grade Ca and Al bearing 75% FeSi inoculant from 0.5 to 0.2% increased the tool life 100%. Inoculation test castings were also poured in a class 40 gray iron; laboratory analysis is currently underway. Exploratory studies were conducted to determine if tool force could be used to predict tool life: torque and feed forces were found to correlate with machinability.

Bates, C.E.; Littleton, H.E.; Eleftheriou, E.; Griffin, R.D.; Dwyer, Z.B.; DelSorbo, C.; Sprague, J.

1997-02-01T23:59:59.000Z

234

Solidification, growth mechanisms, and associated properties of Al-Si and magnesium lightweight casting alloys  

SciTech Connect (OSTI)

Continually rising energy prices have inspired increased interest in weight reduction in the automotive and aerospace industries, opening the door for the widespread use and development of lightweight structural materials. Chief among these materials are cast Al-Si and magnesium-based alloys. Utilization of Al-Si alloys depends on obtaining a modified fibrous microstructure in lieu of the intrinsic flake structure, a process which is incompletely understood. The local solidification conditions, mechanisms, and tensile properties associated with the flake to fiber growth mode transition in Al-Si eutectic alloys are investigated here using bridgman type gradient-zone directional solidification. Resulting microstructures are examined through quantitative image analysis of two-dimensional sections and observation of deep-etched sections showing three-dimensional microstructural features. The transition was found to occur in two stages: an initial stage dominated by in-plane plate breakup and rod formation within the plane of the plate, and a second stage where the onset of out-of-plane silicon rod growth leads to the formation of an irregular fibrous structure. Several microstructural parameters were investigated in an attempt to quantify this transition, and it was found that the particle aspect ratio is effective in objectively identifying the onset and completion velocity of the flake to fiber transition. The appearance of intricate out-of-plane silicon instability formations was investigated by adapting a perturbed-interface stability analysis to the Al-Si system. Measurements of silicon equilibrium shape particles provided an estimate of the anisotropy of the solid Si/liquid Al-Si system and incorporation of this silicon anisotropy into the model was found to improve prediction of the instability length scale. Magnesium alloys share many of the benefits of Al-Si alloys, with the added benefit of a 1/3 lower density and increased machinability. Magnesium castings often contain additions of heavier elements, such as zinc, zirconium, and rare earth elements, which significantly improve high temperature performance. However, additions of these elements can lead to macrosegregational effects in castings, which are detectable by radiographic scans. The effect of these flow-line indications on alloy mechanical properties is not well quantified. An examination of these flow-line indications and their effects on mechanical properties in three magnesium-based casting alloys was performed here in order to determine the best practice for dealing with affected castings. Preliminary results suggest the flow-lines do not measurably impact bulk material properties. Three additional methods of characterizing three-dimensional material structures are also presented: a minimum spanning tree analysis is utilized to quantify local structure in Cu-Zr liquid phase simulations obtained from molecular dynamics; the radial distribution function is applied to directionally solidified Al-Si structures in an attempt to extract local spacing data; and the critical diameter measurement is also defined and applied to irregular eutectic Al-Si structures.

Hosch, Timothy

2010-05-16T23:59:59.000Z

235

Elden Tefft: An Informal Look at a Founding Father of Twentieth Century Bronze Casting in the United States  

E-Print Network [OSTI]

few months I started taking him out to lunch and we became friends. There is a lot of grunt work associated with bronze casting and I like to help with filling up bags of "investment material", mixing it up and pouring the plaster... air pockets will form if some way is not provided for the air to escape. In ďlost waxĒ casting, a wax model and its ventilation system are immersed in a container of thermal plaster. After the plaster hardens, the mold is heated until the wax...

Voorhees, Craig

2011-07-29T23:59:59.000Z

236

A survey of foundries that cast red brass products to ascertain an effective pouring rate of molten metal  

E-Print Network [OSTI]

A SURVEY OF FOUNDRIES THAT CAST RED BRASS PRODUCTS TO ASCERTAIN AN EFPECTIVE POURING RATE OF MOLTEN METAL A Thesis by RONALD KEE TOM Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1974 Major Subject: Industrial Technology A SURVEY OF FOUNDRIES THAT CAST RED BRASS PRODUCTS TO ASCERTAIN AN EFFECTIVE POURING RATE OF MOLTEN METAL A Thesis by RONALD KEE TOM Approved as to style and content by...

Tom, Ronald Kee

2012-06-07T23:59:59.000Z

237

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast-iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of old cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1 (Program Management) and Task 2 (Establishment of Detailed Design Specifications) were completed previously. Task 3 (Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves) has progressed to installing prototype sleeves in test cast-iron pipe segments. Efforts in the current quarter continued to be focused on Tasks 4-8. Highly valuable lessons were learned from field tests of the 4-inch gas pipe repair robot in cast-iron pipe at Public Service Electric & Gas. (These field tests were conducted and reported previously.) Several design issues were identified which need to be implemented in both the small- and large-diameter repair robots for cast-iron pipe to assure their commercial success. For Task 4 (Design, Fabricate and Test Patch Setting Robotic Train), previous problems with bladder design and elastomeric material expansion in the large mains were addressed. A new bladder based on a commercially available design was obtained and tested with success. Minor improvements were highlighted during patch-setting tests and are now being pursued. For Task 5 (Design and Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera), the previous field tests showed clearly that, in mains with low gas velocities, it will be necessary to improve the system's capacity to remove debris from the immediate vicinity of the bell and spigot joints. Otherwise, material removed by the cleaning flails (the flails were found to be very effective in cleaning bell and spigot joints) falls directly to the low side of the pipe and accumulates in a pile. This accumulation can prevent the sleeve from achieving a leak-free repair. Similarly, it is also deemed necessary to design an assembly to capture existing servicetap coupons and allow their removal from the inside of the pipe. Task 6 (Design and Build Surface Control and Monitoring System) was previously completed with the control and computer display functions being operated through LabVIEW. However, this must now be revisited to add control routines for the coupon catcher that will be added. This will most likely include a lift-off/place-on magnet translation function. Task 7 (Design and Fabricate Large Diameter Live Access System) progressed to completing the detailed design for a bolt-on entry fitting for 12-inch diameter cast-iron pipe in the current quarter. The drilling assembly for cutting an access hole through the wall of the gas main was also designed, along with a plug assembly to allow removing all tools from the live main and setting a blind flange on the entry fitting prior to burial. These designs are described in detail in the report. Task 8 (System Integration and Laboratory Validation) continued with the development of the robot module i

Kiran M. Kothari; Gerard T. Pittard

2005-04-01T23:59:59.000Z

238

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast-iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1 (Program Management) and Task 2 (Establishment of Detailed Design Specifications) were completed in prior quarters while Task 3 (Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves) has progressed to installing prototype sleeves in cast-iron test pipe segments. Efforts in the current quarter continued to focus on Tasks 4-8. Highly valuable lessons were learned from field tests of the 4-inch gas pipe repair robot in cast-iron pipe at Public Service Electric & Gas. (These field tests were conducted and reported last quarter.) These tests identified several design issues which need to be implemented in both the small- and large-diameter repair robots for cast-iron pipe to assure their commercial success. For Task 4 (Design, Fabricate and Test Patch Setting Robotic Train), work has been directed on increasing the nitrogen bladder reservoir volume to allow at least two complete patch inflation/patch setting cycles in the event the sleeve does not set all ratchets in the same row on the first attempt. This problem was observed on a few of the repair sleeves that were recently installed during field tests with the small-diameter robotic system. For Task 5 (Design & Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera), the recent field tests showed clearly that, in mains with low gas velocities, it will be necessary to improve the system's capacity to remove debris from the immediate vicinity of the bell and spigot joints. Otherwise, material removed by the cleaning flails (the flails were found to be very effective in cleaning bell and spigot joints) falls directly to the low side of the pipe and accumulates in a pile. This accumulation can prevent the sleeve from achieving a leak-free repair. Similarly, it is also deemed necessary to design an assembly to capture existing service-tap coupons and allow their removal from the inside of the pipe. These coupons were found to cause difficulty in launching and retrieving the small pipe repair robot; for example, one coupon lodged beneath the end of the guide shoe. Designs for new features to accomplish these goals for the large robotic system were pursued and are presented in this report. Task 6 (Design & Build Surface Control and Monitoring System) was previously completed with the control and computer display functions being operated through LabVIEW. However, this must now be revisited to add control routines for the coupon catcher to be added. This will most likely include a lift-off/place-on magnet translation function. Task 7 (Design & Fabricate Large Diameter Live Access System) progressed to completing the detailed design of the entry fitting for 12-inch diameter cast iron pipe in the previous quarter. Field tests with the 4-inch

Kiran M. Kothari; Gerard T. Pittard

2005-01-01T23:59:59.000Z

239

AFM/LFM surface studies of a ternary polymer blend cast on substrates covered by a self-assembled monolayer  

E-Print Network [OSTI]

AFM/LFM surface studies of a ternary polymer blend cast on substrates covered by a self force microscopy; Friction; Self-assembly; Surface thermodynamics (including phase transitions); Growth are of utmost current interest. In many practical appli- cations films of incompatible mixtures are pre- pared

Zbigniew, Postawa

240

Journal of Crystal Growth 287 (2006) 402407 Transition metals in photovoltaic-grade ingot-cast multicrystalline  

E-Print Network [OSTI]

Journal of Crystal Growth 287 (2006) 402­407 Transition metals in photovoltaic-grade ingot silicon (mc-Si) ingot casting for cost-effective solar cell wafer production. Highly sensitive to the invited talk ``Transition metals in photovoltaic-grade multicrystalline silicon'' by A.A. Istratov, T

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Evaluation of cast carbon steel and aluminum for rack insert in MCO Mark 1A fuel basket  

SciTech Connect (OSTI)

This document evaluates the effects ofusing a cast carbon steel or aluminum instead of 3O4L stainless steel in the construction ofthe fuel rack insert for the Spent Nuclear Fuel MCO Mark IA fuel baskets. The corrosion, structural, and cost effects are examined.

Graves, C.E., Fluor Daniel Hanford

1997-03-21T23:59:59.000Z

242

A Distributed Protocol for the Bounded-Hops Converge-cast in Ad-Hoc Networks0  

E-Print Network [OSTI]

A Distributed Protocol for the Bounded-Hops Converge-cast in Ad-Hoc Networks0 Andrea E. F. Clementi (centralized) heuristics. 1 Introduction An ad-hoc (wireless) network consists of a set of radio stations connected by wireless links. In an ad hoc network, a transmission range is assigned to every station

Rossi, Gianluca

243

Year in Review--2008-09 Canadian Studies Center, Bowling Green State University 1 www.bgsu.edu/cast  

E-Print Network [OSTI]

.bgsu.edu/cast The crew of the HMCS CHARLOTTETOWN announces the ship's arrival to port shortly after crossing under. The navy frigate visited selected ports along the St. Lawrence Seaway and in the Great Lakes to highlight practitioners. Roy Warnock, VP & GM, Lima Refining Company, Husky Energy with BGSU Interim President, Dr. Carol

Moore, Paul A.

244

Brittle Failure Design Criteria for Ductile Cast Iron Spent-Fuel  

Office of Scientific and Technical Information (OSTI)

r r Recommendations for Ductile and Brittle Failure Design Criteria for Ductile Cast Iron Spent-Fuel Shipping Containers This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsi- bility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Refer- ence herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recom-

245

Ceramic plasma-sprayed coating of melting crucibles for casting metal fuel slugs  

SciTech Connect (OSTI)

Thermal cycling and melt reaction studies of ceramic coatings plasma-sprayed on Nb substrates were carried out to evaluate the performance of barrier coatings for metallic fuel casting applications. Thermal cycling tests of the ceramic plasma-sprayed coatings to 1450 degrees C showed that HfN, TiC, ZrC, and Y2O3 coating had good cycling characteristics with few interconnected cracks even after 20 cycles. Interaction studies by 1550 degrees C melt dipping tests of the plasma-sprayed coatings also indicated that HfN and Y2O3 do not form significant reaction layer between UĖ20 wt.% Zr melt and the coating layer. Plasma-sprayed Y2O3 coating exhibited the most promising characteristics among HfN, TiC, ZrC, and Y2O3 coating.

K.H. Kim; C.T. Lee; C.B. Lee; R.S. Fielding; J.R. Kennedy

2013-10-01T23:59:59.000Z

246

Cast, heat-resistant austenitic stainless steels having reduced alloying element content  

DOE Patents [OSTI]

A cast, austenitic steel composed essentially of, expressed in weight percent of the total composition, about 0.4 to about 0.7 C, about 20 to about 30 Cr, about 20 to about 30 Ni, about 0.5 to about 1 Mn, about 0.6 to about 2 Si, about 0.05 to about 1 Nb, about 0.05 to about 1 W, about 0.05 to about 1.0 Mo, balance Fe, the steel being essentially free of Ti and Co, the steel characterized by at least one microstructural component selected from the group consisting of MC, M.sub.23C.sub.6, and M(C, N).

Muralidharan, Govindarajan [Knoxville, TN; Sikka, Vinod Kumar [Oak Ridge, TN; Maziasz, Philip J [Oak Ridge, TN; Pankiw, Roman I [Greensburg, PA

2011-08-23T23:59:59.000Z

247

Properties of cast CF-8 stainless-steel weldments at cryogenic temperatures  

SciTech Connect (OSTI)

ISABELLE is a 400 x 400 GeV proton-proton colliding beam accelerator now under construction at Brookhaven National Laboratory. The beams will be guided and focused by superconducting magnets. A total of 722 dipole beam bending magnets and 280 quadrupole beam focusing magnets are required. Centrifugally cast CF-8 stainless steel tubes were selected to provide a rigid support and to house the superconducting magnet assembly. The selection of this material for the support tubes is discussed by Dew-Hughes and Lee. Their study indicates that the presence of delta ferrite strengthens the material but causes a decrease in ductility if the ferrite content is greater than 10%. Brown and Tobler found that the fracture toughness is also decreased as the delta ferrite content is increased.

Chow, J.G.Y.; Klamut, C.J.

1981-01-01T23:59:59.000Z

248

Supplemental Immobilization Cast Stone Technology Development and Waste Form Qualification Testing Plan  

SciTech Connect (OSTI)

The Hanford Tank Waste Treatment and Immobilization Plant (WTP) is being constructed to treat the 56 million gallons of radioactive waste stored in 177 underground tanks at the Hanford Site. The WTP includes a pretreatment facility to separate the wastes into high-level waste (HLW) and low-activity waste (LAW) fractions for vitrification and disposal. The LAW will be converted to glass for final disposal at the Integrated Disposal Facility (IDF). The pretreatment facility will have the capacity to separate all of the tank wastes into the HLW and LAW fractions, and the HLW Vitrification Facility will have the capacity to vitrify all of the HLW. However, a second immobilization facility will be needed for the expected volume of LAW requiring immobilization. A number of alternatives, including Cast Stoneóa cementitious waste formóare being considered to provide the additional LAW immobilization capacity.

Westsik, Joseph H.; Serne, R. Jeffrey; Pierce, Eric M.; Cozzi, Alex; Chung, Chul-Woo; Swanberg, David J.

2013-05-31T23:59:59.000Z

249

Microstructural characterization of as-cast biocompatible Co-Cr-Mo alloys  

SciTech Connect (OSTI)

The microstructure of a cobalt-base alloy (Co-Cr-Mo) obtained by the investment casting process was studied. This alloy complies with the ASTM F75 standard and is widely used in the manufacturing of orthopedic implants because of its high strength, good corrosion resistance and excellent biocompatibility properties. This work focuses on the resulting microstructures arising from samples poured under industrial environment conditions, of three different Co-Cr-Mo alloys. For this purpose, we used: 1) an alloy built up from commercial purity constituents, 2) a remelted alloy and 3) a certified alloy for comparison. The characterization of the samples was achieved by using optical microscopy (OM) with a colorant etchant to identify the present phases and scanning electron microscopy (SE-SEM) and energy dispersion spectrometry (EDS) techniques for a better identification. In general the as-cast microstructure is a Co-fcc dendritic matrix with the presence of a secondary phase, such as the M{sub 23}C{sub 6} carbides precipitated at grain boundaries and interdendritic zones. These precipitates are the main strengthening mechanism in this type of alloys. Other minority phases were also reported and their presence could be linked to the cooling rate and the manufacturing process variables and environment. - Research Highlights: {yields}The solidification microstructure of an ASTM-F75 type alloy were studied. {yields}The alloys were poured under an industrial environment. {yields}Carbides and sigma phase identified by color metallography and scanning microscopy (SEM and EDS). {yields}Two carbide morphologies were detected 'blocky type' and 'pearlite type'. {yields}Minority phases were also detected.

Giacchi, J.V., E-mail: jgiacchi@exa.unicen.edu.ar [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Buenos Aires (Argentina); Instituto de Fisica de Materiales Tandil (IFIMAT-FCE-CICPBA) Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399 B7000GHG Tandil (Argentina); Morando, C.N.; Fornaro, O. [Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Av. Rivadavia 1917, C1033AAJ Buenos Aires (Argentina); Instituto de Fisica de Materiales Tandil (IFIMAT-FCE-CICPBA) Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399 B7000GHG Tandil (Argentina); Palacio, H.A. [Comision de Investigaciones Cientificas de la Provincia de Buenos Aires (CICPBA), Calle 526 e/10 y 11 B1096APP La Plata (Argentina); Instituto de Fisica de Materiales Tandil (IFIMAT-FCE-CICPBA) Facultad de Ciencias Exactas, Universidad Nacional del Centro de la Provincia de Buenos Aires, Pinto 399 B7000GHG Tandil (Argentina)

2011-01-15T23:59:59.000Z

250

Energy-Saving Melting and Revert Reduction Technology (E-SMARRT): Lost Foam Thin Wall - Feasibility of Producing Lost Foam Castings in Aluminum and Magnesium Based Alloys  

SciTech Connect (OSTI)

With the increased emphasis on vehicle weight reduction, production of near-net shape components by lost foam casting will make significant inroad into the next-generation of engineering component designs. The lost foam casting process is a cost effective method for producing complex castings using an expandable polystyrene pattern and un-bonded sand. The use of un-bonded molding media in the lost foam process will impose less constraint on the solidifying casting, making hot tearing less prevalent. This is especially true in Al-Mg and Al-Cu alloy systems that are prone to hot tearing when poured in rigid molds partially due to their long freezing range. Some of the unique advantages of using the lost foam casting process are closer dimensional tolerance, higher casting yield, and the elimination of sand cores and binders. Most of the aluminum alloys poured using the lost foam process are based on the Al-Si system. Very limited research work has been performed with Al-Mg and Al-Cu type alloys. With the increased emphasis on vehicle weight reduction, and given the high-strength-to-weight-ratio of magnesium, significant weight savings can be achieved by casting thin-wall (? 3 mm) engineering components from both aluminum- and magnesium-base alloys.

Fasoyinu, Yemi [CanmetMATERIALS] [CanmetMATERIALS; Griffin, John A. [University of Alabama - Birmingham] [University of Alabama - Birmingham

2014-03-31T23:59:59.000Z

251

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple castiron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1 (Program Management) and Task 2 (Establishment of Detailed Design Specifications) were completed in prior quarters while Task 3 (Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves) has progressed to installing prototype sleeves in cast iron test pipe segments. Efforts in this quarter continued to focus on Tasks 4-8, with significant progress made in each as well as field testing of the 4-inch gas pipe repair robot in cast iron pipe at Public Service Electric & Gas. The field tests were conducted August 23-26, 2004 in Oradell, New Jersey. The field tests identified several design issues which need to be implemented in both the small- and large-diameter cast iron repair robots to assure their commercial success. Task 4 (Design, Fabricate and Test Patch Setting Robotic Train) progressed to the design of the control electronics and pneumatic system to inflate the bladder robotic patch setting module in the last quarter 5. In this quarter, work has been concentrated on increasing the nitrogen bladder reservoir volume to allow at least two complete patch inflation/patch setting cycles in the event the sleeve does not set all ratchets in the same row on the first attempt. This problem was observed on a few of the repair sleeves that were recently installed during field tests with the small-diameter robotic system. For Task 5 (Design & Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera) it was observed that it will be necessary to add a stiff brush to push debris away from the immediate vicinity of the bell and spigot joints in mains having low gas velocities. Otherwise, material removed by the cleaning flails (which were found to be very effective in cleaning bell and spigot joints) simply falls to the low side of the pipe and accumulates in a pile. This accumulation can prevent the sleeve from achieving a leak free repair. Similarly, it is also necessary to design a small magnet to capture existing service tap coupons and allow their removal from the inside of the pipe. These coupons were found to cause difficulty in launching and retrieving the small pipe repair robot; one coupon lodged beneath the end of the guide shoe. These new features require redesign of the pipe wall cleaning train and modification to the patch setting train. Task 6 (Design & Build Surface Control and Monitoring System) was previously completed with the control and computer display functions being operated through LabView. However, this must now be re-visited to add control routines for the coupon catcher to be added. This will most likely include a lift-off/place-on magnet translation function. Task 7 (Design & Fabricate Large Diameter Live Access System) progressed to completing the detailed design of th

Kiran M. Kothari; Gerard T. Pittard

2004-11-01T23:59:59.000Z

252

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast-iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and attaching a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service (which results in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1--Program Management was previously completed. Two reports, one describing the program management plan and the other consisting of the technology assessment, were submitted to the DOE COR in the first quarter. Task 2--Establishment of Detailed Design Specifications and Task 3--Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves are now well underway. First-quarter activities included conducting detailed analyses to determine the capabilities of coiled-tubing locomotion for entering and repairing gas mains and the first design iteration of the joint-sealing sleeve. The maximum horizontal reach of coiled tubing inside a pipeline before buckling prevents further access was calculated for a wide range of coiled-tubing string designs and pipe environments. Work conducted in the second quarter consisted of: (1) selecting a preferred pan/zoom/tilt camera; (2) initiating design of the digital control electronics and switching power supply for the control and operation of the in-pipe robotic modules; (3) continuing design of the repair sleeve and (4) initial testing of the wall-cleaning device. Most recently, activities in the third quarter included: (1) development of the system's pan/zoom/tilt camera control electronics and operating software, and implementing these in the surface and downhole modules and (2) further testing of the wall-cleaning elements used to clean the inside of the bell and spigot joints. Details of these activities are described in the body of the report along with a summary of events scheduled for the fourth quarter.

Kiran M. Kothari; Gerard T. Pittard

2003-01-01T23:59:59.000Z

253

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast-iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and attaching a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service (which results in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1-Program Management was previously completed. Two reports, one describing the program management plan and the other consisting of the technology assessment, were submitted to the DOE COR in the first quarter. Task 2-Establishment of Detailed Design Specifications and Task 3-Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves are now well underway. First-quarter activities included conducting detailed analyses to determine the capabilities of coiled-tubing locomotion for entering and repairing gas mains and the first design iteration of the joint-sealing sleeve. The maximum horizontal reach of coiled tubing inside a pipeline before buckling prevents further access was calculated for a wide range of coiled-tubing string designs and pipe environments. Work conducted in the second quarter consisted of: (1) selecting a preferred pan/zoom/tilt camera; (2) initiating design of the digital control electronics and switching power supply for the control and operation of the in-pipe robotic modules; (3) continuing design of the repair sleeve and (4) initial testing of the wall-cleaning device. Activities in the third quarter included: (1) development of the system's pan/zoom/tilt camera control electronics and operating software, and implementing these in the surface and downhole modules and (2) further testing of the wall-cleaning elements used to clean the inside of the bell and spigot joints. Most recently, fourth quarter developments were centered on designing and testing the pipe-wall cleaning device including the selection of the drive motor and its control electronics. In addition, efforts were also focused on the design of the repair sleeve. Details of these activities are described in the body of the report along with a summary of events scheduled for the next quarter.

Kiran M. Kothari; Gerard T. Pittard

2003-06-01T23:59:59.000Z

254

E(Race)ing gender: Stratified identities  

E-Print Network [OSTI]

in the appropriation of white standards, and rejecting (as seen in Janie's trial for her husband's death) those institutions as the basis of one's identity. The cultural and social price that Janie pays, furthermore, challenges her adaptive capacity to stratify her...

Nguyen, Le Thuy Thi

2000-01-01T23:59:59.000Z

255

Ing. Sergio Cano Fonseca Director Local Chihuahua  

E-Print Network [OSTI]

Chihuahua 30 de sep:embre del 2010 #12;USOS DEL AGUA Agr√≠cola 77% P√ļblico% Industrial 2% EN CHIHUAHUA #12;ACU√ćFEROS SOBREEXPLOTADOS Nota: No se consideran SUBTERR√ĀNEAS) EN CHIHUAHUA Acu√≠feros sobreexplotados (14) 801 Ascensi√≥n 803 Baja Bab√≠cora 804

Scott, Christopher

256

Bachelor projekt Dipl.Ing.IT  

E-Print Network [OSTI]

vedligeholdelse af produktkonfigureringssystemer Anders Degn Kongens Lyngby, 29. april 2006 IMM-B.Eng-2006-17 #12 Lyngby, Denmark Phone +45 45253351, Fax +45 45882673 reception@imm.dtu.dk www.imm.dtu.dk IMM-B.Eng-2006 papers der forventes udgivet andetsteds i Juni 2006. Projektet er udf√łrt i perioden 2. februar 2006 til 1

257

Atomistic modeling of nanowires, small-scale fatigue damage in cast magnesium, and materials for MEMS.  

SciTech Connect (OSTI)

Lightweight and miniaturized weapon systems are driving the use of new materials in design such as microscale materials and ultra low-density metallic materials. Reliable design of future weapon components and systems demands a thorough understanding of the deformation modes in these materials that comprise the components and a robust methodology to predict their performance during service or storage. Traditional continuum models of material deformation and failure are not easily extended to these new materials unless microstructural characteristics are included in the formulation. For example, in LIGA Ni and Al-Si thin films, the physical size is on the order of microns, a scale approaching key microstructural features. For a new potential structural material, cast Mg offers a high stiffness-to-weight ratio, but the microstructural heterogeneity at various scales requires a structure-property continuum model. Processes occurring at the nanoscale and microscale develop certain structures that drive material behavior. The objective of the work presented in this report was to understand material characteristics in relation to mechanical properties at the nanoscale and microscale in these promising new material systems. Research was conducted primarily at the University of Colorado at Boulder to employ tightly coupled experimentation and simulation to study damage at various material size scales under monotonic and cyclic loading conditions. Experimental characterization of nano/micro damage will be accomplished by novel techniques such as in-situ environmental scanning electron microscopy (ESEM), 1 MeV transmission electron microscopy (TEM), and atomic force microscopy (AFM). New simulations to support experimental efforts will include modified embedded atom method (MEAM) atomistic simulations at the nanoscale and single crystal micromechanical finite element simulations. This report summarizes the major research and development accomplishments for the LDRD project titled 'Atomistic Modeling of Nanowires, Small-scale Fatigue Damage in Cast Magnesium, and Materials for MEMS'. This project supported a strategic partnership between Sandia National Laboratories and the University of Colorado at Boulder by providing funding for the lead author, Ken Gall, and his students, while he was a member of the University of Colorado faculty.

Dunn, Martin L. (University of Colorado, Boulder, CO); Talmage, Mellisa J. (University of Colorado, Boulder, CO); McDowell, David L., 1956- (,-Georgia Institute of Technology, Atlanta, GA); West, Neil (University of Colorado, Boulder, CO); Gullett, Philip Michael (Mississippi State University , MS); Miller, David C. (University of Colorado, Boulder, CO); Spark, Kevin (University of Colorado, Boulder, CO); Diao, Jiankuai (University of Colorado, Boulder, CO); Horstemeyer, Mark F. (Mississippi State University , MS); Zimmerman, Jonathan A.; Gall, K (Georgia Institute of Technology, Atlanta, GA)

2006-10-01T23:59:59.000Z

258

Progress in the Reliable Inspection of Cast Stainless Steel Reactor Piping Components  

SciTech Connect (OSTI)

Studies conducted at the Pacific N¨orthwest National Laboratory (PNNL) in Richland, Washington, have focused on assessing the effectiveness and reliability of novel NDE approaches for the inspection of coarse-grained, cast stainless steel reactor components. The primary objective of this work is to provide information to the United States Nuclear Regulatory Commission (US NRC) on the utility, effec¨tiveness and reliability of ultrasonic testing (UT) and eddy current testing (ET) inspection techniques as related to the inservice ultrasonic inspec¨tion of primary piping components in pressurized water reactors (PWRs). This paper describes progress, recent developments and results from assessments of three different NDE approaches including ultrasonic phased array inspection techniques, eddy current testing for surface-breaking flaws, and a low-frequency ultrasonic inspection methodology coupled with a synthetic aperture focusing technique (SAFT). Westinghouse Ownerís Group (WOG) cast stainless steel pipe segments with thermal and mechanical fatigue cracks, PNNL samples containing thermal fatigue cracks and several blank spool pieces were used for assessing the inspection methods. Eddy current studies were conducted on the inner diameter (ID) surface of piping specimens while the ultrasonic inspection methods were applied from the outer diameter (OD) surface of the specimens. The eddy current technique employed a Zetec MIZ-27SI Eddy Current instrument and a Zetec Z0000857-1 cross point spot probe with an operating frequency of 250 kHz. In order to reduce noise effects, degaussing of a subset of the samples resulted in noticeable improvements. The phased array approach was implemented using an R/D Tech Tomoscan III system operating at 1 MHz, providing composite volumetric images of the samples. The low-frequency ultrasonic method employs a zone-focused, multi-incident angle inspection protocol (operating at 250-500 kHz) coupled with SAFT for improved signal-to-noise and advanced imaging capabilities. A variety of dual-element, custom designed low-frequency probes (fixed-wedge and variable angle configurations) were employed in laboratory trials. Re¨sults from laboratory studies for assessing detection, localization and length sizing effectiveness are discussed. This work was sponsored by the U.S. Nuclear Regulatory Commission under Contract DE-AC06-76RLO 1830; NRC JCN Y6604; Mr. Wallace Norris, Program Monitor.

Doctor, Steven R.; Anderson, Michael T.; Diaz, Aaron A.; Cumblidge, Stephen E.

2005-12-31T23:59:59.000Z

259

A New Type of Submerged-Arc Flux-Cored Wire Used for Hardfacing Continuous Casting Rolls  

Science Journals Connector (OSTI)

It is expected that the welding hardfacing of continuous casting rolls has better welding performance and higher wear resistance. A new type of submerged-arc hardfacing flux-cored wire has been developed through nitrogen replacing part of carbon and addition of the nitrogen-fixing elements of niobium and titanium. And microstructure, degree of hardness and high-temperature wear resistance of its deposited metal samples were also investigated. It is found that the microstructure is martensite, residual austenite and carbonitride precipitates. As a result, the hardfacing metal with homogeneous distribution of very fine carbonitride particles had high hardness and excellent wear-resisting property during high-temperature wear, which could significantly extend the service life of continuous casting rolls.

Ke YANG; Zhi-xi ZHANG; Wang-qin HU; Ye-feng BAO; Yong-feng JIANG

2011-01-01T23:59:59.000Z

260

Energy Saving Melting and Revert Reduction Technology: Improved Die Casting Process to Preserve the Life of the Inserts  

SciTech Connect (OSTI)

The goal of this project was to study the combined effects of die design, proper internal cooling and efficient die lubricants on die life. The project targeted improvements in die casting insert life by: Optomized Die Design for Reduced Surface Temperature: The life of die casting dies is significantly shorter when the die is exposed to elevated temperature for significant periods of time. Any die operated under conditions leading to surface temperature in excess of 1050oF undergoes structural changes that reduce its strength. Optimized die design can improve die life significantly. This improvement can be accomplished by means of cooling lines, baffles and bubblers in the die. A key objective of the project was to establish criteria for the minimal distance of the cooling lines from the surface. This effort was supported with alloys and machining by BohlerUddeholm, Dunn Steel, HH Stark and Rex Buckeye. In plant testing and evaluation was conducted as in-kind cost share at St. Clair Die Casting. The Uddeholm Dievar steel evaluated in this program showed superior resistance to thermal fatigue resistance. Based on the experimental evidence, cooling lines could be placed as close as 0.5"¬Ě from the surface. Die Life Extension by Optimized Die Lubrication: The life of die casting dies is affected by additions made to its surface with the proper lubricants. These lubricants will protect the surface from the considerable temperature peaks that occur when the molten melt enters the die. Dies will reach a significantly higher temperature without this lubricant being applied. The amount and type of the lubricant are critical variables in the die casting process. However, these lubricants must not corrode the die surface. This effort was supported with alloys and machining by BohlerUddeholm, Dunn Steel, HH Stark and Rex Buckeye. In plant testing and evaluation was conducted as in-kind cost share at St. Clair Die Casting. Chem- Trend participated in the program with die lubricants and technical support. Experiments conducted with these lubricants demonstrated good protection of the substrate steel. Graphite and boron nitride used as benchmarks are capable of completely eliminating soldering and washout. However, because of cost and environmental considerations these materials are not widely used in industry. The best water-based die lubricants evaluated in this program were capable of providing similar protection from soldering and washout. In addition to improved part quality and higher production rates, improving die casting processes to preserve the life of the inserts will result in energy savings and a reduction in environmental wastes. Improving die life by means of optimized cooling line placement, baffles and bubblers in the die will allow for reduced die temperatures during processing, saving energy associated with production. The utilization of optimized die lubricants will also reduce heat requirements in addition to reducing waste associated with soldering and washout. This new technology was predicted to result in an average energy savings of 1.1 trillion BTU's/year over a 10 year period. Current (2012) annual energy saving estimates, based on commercial introduction in 2010, a market penetration of 70% by 2020 is 1.26 trillion BTU's/year. Along with these energy savings, reduction of scrap and improvement in casting yield will result in a reduction of the environmental emissions associated with the melting and pouring of the metal which will be saved as a result of this technology. The average annual estimate of CO2 reduction per year through 2020 is 0.025 Million Metric Tons of Carbon Equivalent (MM TCE).

David Schwam, PI; Xuejun Zhu, Sr. Research Associate

2012-09-30T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

An evaluation of joint repair methods for cast iron natural gas distribution mains and the preliminary development of an alternative joint seal  

E-Print Network [OSTI]

Approximately 10 percent of the natural gas pumped into distribution systems is unaccounted for. A significant portion of this amount is leakage from joints in 50 to 100 year old cast iron main. Because of the cumulative ...

Rogers, Thomas Edward

1984-01-01T23:59:59.000Z

262

Identifying developmental toxicity pathways for a subset of ToxCast chemicals using human embryonic stem cells and metabolomics  

SciTech Connect (OSTI)

Metabolomics analysis was performed on the supernatant of human embryonic stem (hES) cell cultures exposed to a blinded subset of 11 chemicals selected from the chemical library of EPA's ToxCast Trade-Mark-Sign chemical screening and prioritization research project. Metabolites from hES cultures were evaluated for known and novel signatures that may be indicative of developmental toxicity. Significant fold changes in endogenous metabolites were detected for 83 putatively annotated mass features in response to the subset of ToxCast chemicals. The annotations were mapped to specific human metabolic pathways. This revealed strong effects on pathways for nicotinate and nicotinamide metabolism, pantothenate and CoA biosynthesis, glutathione metabolism, and arginine and proline metabolism pathways. Predictivity for adverse outcomes in mammalian prenatal developmental toxicity studies used ToxRefDB and other sources of information, including Stemina Biomarker Discovery's predictive DevTox Registered-Sign model trained on 23 pharmaceutical agents of known developmental toxicity and differing potency. The model initially predicted developmental toxicity from the blinded ToxCast compounds in concordance with animal data with 73% accuracy. Retraining the model with data from the unblinded test compounds at one concentration level increased the predictive accuracy for the remaining concentrations to 83%. These preliminary results on a 11-chemical subset of the ToxCast chemical library indicate that metabolomics analysis of the hES secretome provides information valuable for predictive modeling and mechanistic understanding of mammalian developmental toxicity. -- Highlights: Black-Right-Pointing-Pointer We tested 11 environmental compounds in a hESC metabolomics platform. Black-Right-Pointing-Pointer Significant changes in secreted small molecule metabolites were observed. Black-Right-Pointing-Pointer Perturbed mass features map to pathways critical for normal development and pregnancy. Black-Right-Pointing-Pointer Arginine, proline, nicotinate, nicotinamide and glutathione pathways were affected.

Kleinstreuer, N.C., E-mail: kleinstreuer.nicole@epa.gov [NCCT, US EPA, RTP, NC 27711 (United States); Smith, A.M.; West, P.R.; Conard, K.R.; Fontaine, B.R. [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States)] [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States); Weir-Hauptman, A.M. [Covance, Inc., Madison, WI 53704 (United States)] [Covance, Inc., Madison, WI 53704 (United States); Palmer, J.A. [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States)] [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States); Knudsen, T.B.; Dix, D.J. [NCCT, US EPA, RTP, NC 27711 (United States)] [NCCT, US EPA, RTP, NC 27711 (United States); Donley, E.L.R. [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States)] [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States); Cezar, G.G. [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States) [Stemina Biomarker Discovery, Inc., Madison, WI 53719 (United States); University of Wisconsin-Madison, Madison, WI 53706 (United States)

2011-11-15T23:59:59.000Z

263

Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Annual subcontract report, January 1, 1995--December 31, 1995  

SciTech Connect (OSTI)

The objective of this three-year program is to advance Solarex`s cast polycrystalline silicon manufacturing technology, reduce module production cost, increase module performance and expand Solarex`s commercial production capacities. Two specific objectives of this program are to reduce the manufacturing cost for polycrystalline silicon PV modules to less than $1.20/watt and to increase the manufacturing capacity by a factor of three.

Wohlgemuth, J. [Amoco/Enron Solar, Frederick, MD (United States)] [Amoco/Enron Solar, Frederick, MD (United States)

1996-06-01T23:59:59.000Z

264

Process for casting hard-faced, lightweight camshafts and other cylindrical products  

DOE Patents [OSTI]

A process for casting a hard-faced cylindrical product such as an automobile camshaft includes the steps of: (a) preparing a composition formed from a molten base metal and an additive in particle form and having a hardness value greater than the hardness value of the base metal; (b) introducing the composition into a flask containing a meltable pattern of a cylindrical product such as an automobile camshaft to be manufactured and encased in sand to allow the composition to melt the pattern and assume the shape of the pattern within the sand; and (c) rotating the flask containing the pattern about the longitudinal axes of both the flask and the pattern as the molten base metal containing the additive in particle form is introduced into the flask to cause particles of the additive entrained in the molten base metal to migrate by centrifugal action to the radial extremities of the pattern and thereby provide a cylindrical product having a hardness value greater at it's radial extremities than at its center when the molten base metal solidifies.

Hansen, Jeffrey S. (Corvallis, OR); Turner, Paul C. (Albany, OR); Argetsinger, Edward R. (Albany, OR); Wilson, Rick D. (Corvallis, OR)

1996-01-01T23:59:59.000Z

265

Methods for the In-Situ Characterization of Cast Austenitic Stainless Steel Microstructures  

SciTech Connect (OSTI)

Cast austenitic stainless steel (CASS) that was commonly used in U.S. nuclear power plants is a coarse-grained, elastically anisotropic material. Its engineering properties made it a material of choice for selected designs of nuclear power reactor systems. However, the fabrication processes result in a variety of coarse-grain microstructures that make current ultrasonic in-service inspection of components quite challenging. To address inspection needs, new ultrasonic inspection approaches are being sought. However, overcoming the deleterious and variable effects of the microstructure on the interrogating ultrasonic beam may require knowledge of the microstructure, for potential optimization of inspection parameters to enhance the probability of detection (POD). The ability to classify microstructure type (e.g. polycrystalline or columnar) has the potential to guide selection of optimal NDE approaches. This paper discusses the application of ultrasonic and electromagnetic methods for classifying CASS microstructures, when making measurements from the outside surface of the component. Results to date demonstrate the potential of these measurements to discriminate between two consistent microstructures - equiaxed-grain material versus columnar-grain material. The potential for fusion of ultrasonic and electromagnetic measurements for in-situ microstructure characterization in CASS materials will be explored.

Ramuhalli, Pradeep; Good, Morris S.; Harris, Robert V.; Bond, Leonard J.; Ruud, Clayton O.; Diaz, Aaron A.; Anderson, Michael T.

2011-06-29T23:59:59.000Z

266

The Effect of Applied Pressure During Feeding of Critical Cast Aluminum Alloy Components With Particular Reference to Fatigue Resistance  

SciTech Connect (OSTI)

the medium to long freezing range alloys of aluminum such as A356, A357, A206, 319 for example are known to exhibit dispersed porosity, which is recognized as a factor affecting ductility, fracture toughness, and fatigue resistance of light alloy castings. The local thermal environment, for example, temperature gradient and freezing from velocity, affect the mode of solidification which, along with alloy composition, heat treatment, oxide film occlusion, hydrogen content, and the extent to which the alloy contracts on solidification, combine to exert strong effects on the porosity formation in such alloys. In addition to such factors, the availability of liquid metal and its ability to flow through the partially solidified casting, which will be affect by the pressure in the liquid metal, must also be considered. The supply of molten metal will thus be controlled by the volume of the riser available for feeding the particular casting location, its solidification time, and its location together with any external pressure that might be applied at the riser.

J.T. Berry; R. Luck; B. Zhang; R.P. Taylor

2003-06-30T23:59:59.000Z

267

Waste Acceptance Testing of Secondary Waste Forms: Cast Stone, Ceramicrete and DuraLith  

SciTech Connect (OSTI)

To support the selection of a waste form for the liquid secondary wastes from WTP, Washington River Protection Solutions has initiated secondary-waste-form testing work at Pacific Northwest National Laboratory (PNNL). In anticipation of a down-selection process for a waste form for the Solidification Treatment Unit to be added to the ETF, PNNL is conducting tests on four candidate waste forms to evaluate their ability to meet potential waste acceptance criteria for immobilized secondary wastes that would be placed in the IDF. All three waste forms demonstrated compressive strengths above the minimum 3.45 MPa (500 psi) set as a target for cement-based waste forms. Further, none of the waste forms showed any significant degradation in compressive strength after undergoing thermal cycling (30 cycles in a 10 day period) between -40 C and 60 C or water immersion for 90 days. The three leach test methods are intended to measure the diffusion rates of contaminants from the waste forms. Results are reported in terms of diffusion coefficients and a leachability index (LI) calculated based on the diffusion coefficients. A smaller diffusion coefficient and a larger LI are desired. The NRC, in its Waste Form Technical Position (NRC 1991), provides recommendations and guidance regarding methods to demonstrate waste stability for land disposal of radioactive waste. Included is a recommendation to conduct leach tests using the ANS 16.1 method. The resulting leachability index (LI) should be greater than 6.0. For Hanford secondary wastes, the LI > 6.0 criterion applies to sodium leached from the waste form. For technetium and iodine, higher targets of LI > 9 for Tc and LI > 11 for iodine have been set based on early waste-disposal risk and performance assessment analyses. The results of these three leach tests conducted for a total time between 11days (ASTM C1308) to 90 days (ANS 16.1) showed: (1) Technetium diffusivity: ANSI/ANS 16.1, ASTM C1308, and EPA 1315 tests indicated that all the waste forms had leachability indices better than the target LI > 9 for technetium; (2) Rhenium diffusivity: Cast Stone 2M specimens, when tested using EPA 1315 protocol, had leachability indices better than the target LI > 9 for technetium based on rhenium as a surrogate for technetium. All other waste forms tested by ANSI/ANS 16.1, ASTM C1308, and EPA 1315 test methods had leachability indices that were below the target LI > 9 for Tc based on rhenium release. These studies indicated that use of Re(VII) as a surrogate for 99Tc(VII) in low temperature secondary waste forms containing reductants will provide overestimated diffusivity values for 99Tc. Therefore, it is not appropriate to use Re as a surrogate 99Tc in future low temperature waste form studies. (3) Iodine diffusivity: ANSI/ANS 16.1, ASTM C1308, and EPA 1315 tests indicated that the three waste forms had leachability indices that were below the target LI > 11 for iodine. Therefore, it may be necessary to use a more effective sequestering material than silver zeolite used in two of the waste forms (Ceramicrete and DuraLith); (4) Sodium diffusivity: All the waste form specimens tested by the three leach methods (ANSI/ANS 16.1, ASTM C1308, and EPA 1315) exceeded the target LI value of 6; (5) All three leach methods (ANS 16.1, ASTM C1308 and EPA 1315) provided similar 99Tc diffusivity values for both short-time transient diffusivity effects as well as long-term ({approx}90 days) steady diffusivity from each of the three tested waste forms (Cast Stone 2M, Ceramicrete and DuraLith). Therefore, any one of the three methods can be used to determine the contaminant diffusivities from a selected waste form.

Mattigod, Shas V.; Westsik, Joseph H.; Chung, Chul-Woo; Lindberg, Michael J.; Parker, Kent E.

2011-08-12T23:59:59.000Z

268

Textures in Strip-Cast Aluminum Alloys: Their On-Line Monitoring and Quantitative Effects on Formability. Final Technical Report  

SciTech Connect (OSTI)

Aluminum sheets produced by continuous casting (CC) provide energy and economic savings of at least 25 and 14 percent, respectively, over sheets made from conventional direct chill (DC) ingot casting and rolling. As a result of the much simpler production route in continuous casting, however, the formability of CC aluminum alloys is often somewhat inferior to that of their DC counterparts. The mechanical properties of CC alloys can be improved by controlling their microstructure through optimal thermomechanical processing. Suitable annealing is an important means to improve the formability of CC aluminum alloy sheets. Recrystallization of deformed grains occurs during annealing, and it changes the crystallographic texture of the aluminum sheet. Laboratory tests in this project showed that this texture change can be detected by either laser-ultrasound resonance spectroscopy or resonance EMAT (electromagnetic acoustic transducer) spectroscopy, and that monitoring this change allows the degree of recrystallization or the ''recrystallized fraction'' in an annealed sheet to be ascertained. Through a plant trial conducted in May 2002, this project further demonstrated that it is feasible to monitor the recrystallized state of a continuous-cast aluminum sheet in-situ on the production line by using a laser-ultrasound sensor. When used in conjunction with inline annealing, inline monitoring of the recrystallized fraction by laser-ultrasound resonance spectroscopy offers the possibility of feed-back control that helps optimize processing parameters (e.g., annealing temperature), detect production anomalies, ensure product quality, and further reduce production costs of continuous-cast aluminum alloys. Crystallographic texture strongly affects the mechanical anisotropy/formability of metallic sheets. Clarification of the quantitative relationship between texture and anisotropy/formability of an aluminum alloy will render monitoring and control of its texture during the sheet production process even more meaningful. The present project included a study to determine how the anisotropic plastic behavior of a continuous-cast AA 5754 aluminum alloy depends on quantifiable texture coefficients. Formulae which show explicitly the effects of texture on the directional dependence of the q-value (a formability parameter) and of the uniaxial flow stress, respectively, were derived. Measurements made on a batch of as-received AA 5754 hot band and its O-temper counterpart corroborate the validity of these formulae. On the other hand, these measurements also indicate that some microstructure(s) other than texture could play a significant role in the plastic anisotropy of the AA 5754 alloy. For the q-value of a set of O-temper samples of this alloy, the additional microstructure that affects plastic anisotropy was shown to be grain shape. A formula that captures both the effects of crystallographic texture and grain shape on the q-value of the O-temper material was derived. A simple quadratic plastic potential that delivers this q-value formula was written down. Verification of the adequacy of this plastic potential, however, requires further investigations.

Man, Chi-Sing

2003-07-27T23:59:59.000Z

269

A Comparison of Creep-Rupture Tested Cast Alloys HR282, IN740 and 263 for Possible Application in Advanced Ultrasupercritical Steam Turbine and Boiler  

SciTech Connect (OSTI)

Cast forms of traditionally wrought Ni-base precipitation-strengthened superalloys are being considered for service in the ultra-supercritical conditions (760įC, 35MPa) of next-generation steam boilers and turbines. After casting and homogenization, these alloys were given heat-treatments typical for each in the wrought condition to develop the gamma-prime phase. Specimens machined from castings were creep-rupture tested in air at 800įC. In their wrought forms, alloy 282 is expected to precipitate M23C6 within grain boundaries, alloy 740 is expected to precipitate several grain boundary phases including M23C6, G Phase, and ? phase, and alloy 263 has M23C6 and MC within its grain boundaries. This presentation will correlate the observed creep-life of these cast alloys with the microstructures developed during creep-rupture tests, with an emphasis on the phase identification and chemistry of precipitated grain boundary phases. The suitability of these cast forms of traditionally wrought alloys for turbine and boiler components will also be discussed.

Jablonski, P D; Evens, N; Yamamoto, Y; Maziasz, P

2011-02-27T23:59:59.000Z

270

A Review of "Hall of Mirrors: Power, Witchcraft, and Caste in Colonial Mexico" by Laura A. Lewis  

E-Print Network [OSTI]

.95 cloth; $22.95 paperback. Review by patricia m. garc?a, the university of texas at austin. Laura A. Lewis?s Hall of Mirrors: Power, Witchcraft, and Caste in Co- lonial Mexico begins with the first of many case histories of men and women accused... witchcraft) and within the system as they maintained a protected legal status exempting them from court proceedings and from enslavement. Chapter two, ?The Roads are Harsh: Spanish and Indians in the Sanctioned Domain,? examines such relationships...

Garcia, Patricia

2009-01-01T23:59:59.000Z

271

Effect of Process Parameters on Abnormal Grain Growth during Friction Stir Processing of a Cast Al Alloy  

SciTech Connect (OSTI)

The effects of process parameters and friction stir processing (FSP) run configurations on the stability of nugget microstructure at elevated temperatures were evaluated. Cast plates of an Al-7Si- 0.6Mg alloy were friction stir processed using a combination of tool rotation rates and tool traverse speeds. All single pass runs showed some extent of abnormal grain growth (AGG), whereas multi-pass runs were more resistant to AGG. Additionally, higher tool rpm was found to be beneficial for controlling AGG. These effects were analyzed by comparing the result of this work with other published results and AGG models.

Jana, Saumyadeep; Mishra, Rajiv S.; Baumann, John A.; Grant, Glenn J.

2010-11-25T23:59:59.000Z

272

Enhanced heat transfer surface for cast-in-bump-covered cooling surfaces and methods of enhancing heat transfer  

DOE Patents [OSTI]

An annular turbine shroud separates a hot gas path from a cooling plenum containing a cooling medium. Bumps are cast in the surface on the cooling side of the shroud. A surface coating overlies the cooling side surface of the shroud, including the bumps, and contains cooling enhancement material. The surface area ratio of the cooling side of the shroud with the bumps and coating is in excess of a surface area ratio of the cooling side surface with bumps without the coating to afford increased heat transfer across the element relative to the heat transfer across the element without the coating.

Chiu, Rong-Shi Paul (Glenmont, NY); Hasz, Wayne Charles (Pownal, VT); Johnson, Robert Alan (Simpsonville, SC); Lee, Ching-Pang (Cincinnati, OH); Abuaf, Nesim (Lincoln City, OR)

2002-01-01T23:59:59.000Z

273

The effect of processing upon the fracture behavior of cast and forged low alloy steel wellhead components  

E-Print Network [OSTI]

as to style and content by: W. L. Bradl (Chairman of Co ittee) ornwe (Member) D. N. Li tie (Member) C. F. ettl oroug (Head of Department) May 1987 ABSTRACT The Effect of processing Upon the Fracture Behavior of Cast and Forged Low Alloy Steel... at several temperatures for material from the 4140 23 cm (9") diameter bar. Table 8 ? Values of K and tearing resistance (TR) 66 Jc at several temperatures for material from 4140 15 cm (6") diameter bar. vii Page Table 9 ? Values of KJ and tearing...

Desadier, Christopher Earl

2012-06-07T23:59:59.000Z

274

Generalized constructal optimization for solidification heat transfer process of slab continuous casting based on heat loss rate  

Science Journals Connector (OSTI)

Abstract Based on constructal theory, generalized constructal optimization of a solidification heat transfer process of slab continuous casting is carried out by taking a complex function as optimization objective. The complex function is composed of the functions of the heat loss rate and surface temperature gradient of the slab subjected to the constraints of shell thickness, surface temperature and liquid core length of the slab. For the specified total water flow rate, the ďoptimal constructĒ of the water distribution in the secondary cooling zone is obtained. Comparing the optimal results with the initial ones, it is shown that the complex function, the functions of the heat loss rate and the surface temperature gradient after optimization are decreased by 35.04%, 2.14% and 59.48%, respectively. Therefore, the scheme of the ďoptimal constructĒ of the water distribution reduces the heat loss rate and surface temperature gradient of the slab simultaneously, that is, improves its energy retention and quality simultaneously. The optimization results obtained in this paper can provide some guidelines for parameter designs and dynamic operations of the solidification heat transfer process of slab continuous casting.

Huijun Feng; Lingen Chen; Zhihui Xie; Zemin Ding; Fengrui Sun

2014-01-01T23:59:59.000Z

275

Heat and corrosion resistant cast CN-12 type stainless steel with improved high temperature strength and ductility  

DOE Patents [OSTI]

A cast stainless steel alloy and articles formed therefrom containing about 0.5 wt. % to about 10 wt. % manganese, 0.02 wt. % to 0.50 wt. % N, and less than 0.15 wt. % sulfur provides high temperature strength both in the matrix and at the grain boundaries without reducing ductility due to cracking along boundaries with continuous or nearly-continuous carbides. Alloys of the present invention also have increased nitrogen solubility thereby enhancing strength at all temperatures because nitride precipitates or nitrogen porosity during casting are not observed. The solubility of nitrogen is dramatically enhanced by the presence of manganese, which also retains or improves the solubility of carbon thereby providing additional solid solution strengthening due to the presence of manganese and nitrogen, and combined carbon. Such solution strengthening enhances the high temperature precipitation-strengthening benefits of fine dispersions of NbC. Such solid solution effects also enhance the stability of the austenite matrix from resistance to excess sigma phase or chrome carbide formation at higher service temperatures. The presence of sulfides is substantially eliminated.

Mazias, Philip J. (Oak Ridge, TN); McGreevy, Tim (Morton, IL); Pollard,Michael James (East Peoria, IL); Siebenaler, Chad W. (Peoria, IL); Swindeman, Robert W. (Oak Ridge, TN)

2007-08-14T23:59:59.000Z

276

Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Annual subcontract report, 1 January 1996--31 December 1996  

SciTech Connect (OSTI)

This report describes Solarex`s accomplishments during this phase of the Photovoltaic Manufacturing Technology (PVMaT) program. During this reporting period, Solarex researchers converted 79% of production casting stations to increase ingot size and operated them at equivalent yields and cell efficiencies; doubled the casting capacity at 20% the cost of buying new equipment to achieve the same capacity increase; operated the wire saws in a production mode with higher yields and lower costs than achieved on the ID saws; purchased additional wire saws; developed and qualified a new wire-guide coating material that doubles the wire-guide lifetime and produces significantly less scatter in wafer thickness; ran an Al paste back-surface-field process on 25% of all cells in manufacturing; completed environmental qualification of modules using cells produced by an all-print metallization process; qualified a vendor-supplied Tedlar/ethylene vinyl acetate (EVA) laminate to replace the combination of separate sheets of EVA and Tedlar backsheet; substituted RTV adhesive for the 3M Very High Bond tape after several field problems with the tape; demonstrated the operation of a prototype unit to trim/lead attach/test modules; demonstrated the use of light soldering for solar cells; demonstrated the operation of a wafer pull-down system for cassetting wet wafers; and presented three PVMaT-related papers at the 25th IEEE Photovoltaic Specialists Conference.

Wohlgemuth, J. [Solarex Corp., Frederick, MD (United States)

1997-10-01T23:59:59.000Z

277

Development of Cost-Effective Low-Permeability Ceramic and Refractory Components for Aluminum Melting and Casting  

SciTech Connect (OSTI)

A recent review by the U.S. Advanced Ceramics Association, the Aluminum Association, and the U.S. Department of Energy's Office of Industrial Technologies (DOE/OIT) described the status of advanced ceramics for aluminum processing, including monolithics, composites, and coatings. The report observed that monolithic ceramics (particularly oxides) have attractive properties such as resistance to heat, corrosion, thermal shock, abrasion, and erosion [1]. However, even after the developments of the past 25 years, there are two key barriers to commercialization: reliability and cost-effectiveness. Industry research is therefore focused on eliminating these barriers. Ceramic coatings have likewise undergone significant development and a variety of processes have been demonstrated for applying coatings to substrates. Some processes, such as thermal barrier coatings for gas turbine engines, exhibit sufficient reliability and service life for routine commercial use. Worldwide, aluminum melting and molten metal handling consumes about 506,000 tons of refractory materials annually. Refractory compositions for handling molten aluminum are generally based on dense fused cast silica or mullite. The microstructural texture is extremely important because an interlocking mass of coarser grains must be bonded together by smaller grains in order to achieve adequate strength. At the same time, well-distributed microscopic pores and cracks are needed to deflect cracks and prevent spalling and thermal shock damage [2]. The focus of this project was to develop and validate new classes of cost-effective, low-permeability ceramic and refractory components for handling molten aluminum in both smelting and casting environments. The primary goal was to develop improved coatings and functionally graded materials that will possess superior combinations of properties, including resistance to thermal shock, erosion, corrosion, and wetting. When these materials are successfully deployed in aluminum smelting and casting operations, their superior performance and durability will give end users marked improvements in uptime, defect reduction, scrap/rework costs, and overall energy savings resulting from higher productivity and yield. The implementation of results of this program will result in energy savings of 30 trillion Btu/year by 2020. For this Industrial Materials for the Future (IMF) project, riser tube used in the low-pressure die (LPD) casting of aluminum was selected as the refractory component for improvement. In this LPD process, a pressurized system is used to transport aluminum metal through refractory tubes (riser tubes) into wheel molds. It is important for the tubes to remain airtight because otherwise, the pressurized system will fail. Generally, defects such as porosity in the tube or cracks generated by reaction of the tube material with molten aluminum lead to tube failure, making the tube incapable of maintaining the pressure difference required for normal casting operation. Therefore, the primary objective of the project was to develop a riser tube that is not only resistant to thermal shock, erosion, corrosion, and wetting, but is also less permeable, so as to achieve longer service life. Currently, the dense-fused silica (DFS) riser tube supplied by Pyrotek lasts for only 7 days before undergoing failure. The following approach was employed to achieve the goal: (1) Develop materials and methods for sealing surface porosity in thermal-shock-resistant ceramic refractories; (2) Develop new ceramic coatings for extreme service in molten aluminum operations, with particular emphasis on coatings based on highly stable oxide phases; (3) Develop new monolithic refractories designed for lower-permeability applications using controlled porosity gradients and particle size distributions; (4) Optimize refractory formulations to minimize wetting by molten aluminum, and characterize erosion, corrosion, and spallation rates under realistic service conditions; and (5) Scale up the processing methods to full-sized components and perform field testi

Kadolkar, Puja [ORNL; Ott, Ronald D [ORNL

2006-02-01T23:59:59.000Z

278

A National Assistance Extension Program for Metal Casting: a foundation industry. Final report for the period February 16, 1994 through May 15, 1997  

SciTech Connect (OSTI)

The TRP award was proposed as an umbrella project to build infrastructure and extract lessons about providing extension-enabling services to the metal casting industry through the national network of Manufacturing Technology Center`s (MTC`s). It targeted four discrete task areas required for the MCC to service the contemplated needs of industry, and in which the MCC had secured substantial involvement of partner organizations. Task areas identified included Counter-Gravitational Casting, Synchronous Manufacturing, Technology Deployment, and Facility and Laboratory Improvements. Each of the task areas includes specific subtasks which are described.

NONE

1997-09-01T23:59:59.000Z

279

Technical Letter Report Assessment of Ultrasonic Phased Array Testing for Cast Austenitic Stainless Steel Pressurizer Surge Line Piping Welds and Thick Section Primary System Cast Piping Welds JCN N6398, Task 2A  

SciTech Connect (OSTI)

Research is being conducted for the NRC at PNNL to assess the effectiveness and reliability of advanced NDE methods for the inspection of LWR components. The scope of this research encompasses primary system pressure boundary materials including cast austenitic stainless steels (CASS), dissimilar metal welds (DMWs), piping with corrosion-resistant cladding, weld overlays, and far-side examinations of austenitic piping welds. A primary objective of this work is to evaluate various NDE methods to assess their ability to detect, localize, and size cracks in coarse-grained steel components. This interim technical letter report (TLR) provides a synopsis of recent investigations at PNNL aimed at evaluating the capabilities of phased-array (PA) ultrasonic testing (UT) methods as applied to the inspection of CASS welds in nuclear reactor piping. A description of progress, recent developments and interim results are provided.

Diaz, Aaron A.; Denslow, Kayte M.; Cinson, Anthony D.; Morra, Marino; Crawford, Susan L.; Prowant, Matthew S.; Cumblidge, Stephen E.; Anderson, Michael T.

2008-07-21T23:59:59.000Z

280

Spin-Cast Deposition of CdSe-CdS Core-Shell Colloidal Quantum Dots on Doped GaAs Substrates: Structural and Optical Characterization  

Science Journals Connector (OSTI)

The detailed study of the effects of spin recipe and GaAs substrate doping (i.e., semi-insulating, n-type, or p-type) on the structural and optical properties of spin-cast CdSe-CdS core-shell CQDs provides insight into the surface adsorption and charge ... Keywords: Charge transfer, colloidal quantum dots, hybrid junctions, photoluminescence

A. D. Stiff-Roberts; Wanming Zhang; Jian Xu; Hongying Peng; H. O. Everitt

2007-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Introduction to Industrial Engineering and Operations Research (IEOR) It is fair to say the industrial engineers and operations researchers cast the widest net of all  

E-Print Network [OSTI]

conduct real-time system monitoring to optimize operations. IEOR is also known as operations managementIntroduction to Industrial Engineering and Operations Research (IEOR) It is fair to say the industrial engineers and operations researchers cast the widest net of all engineers with regard

Massachusetts at Amherst, University of

282

Influence of strontium addition on the mechanical properties of gravity cast Mg-3Al-3Sn alloy  

SciTech Connect (OSTI)

In this study, the effect of strontium (0.01, 0.1, 0.5, 1 wt%) addition on the microstructure and mechanical properties of the gravity cast Mg-3Al-3Sn alloy were investigated. X-ray diffractometry revealed that the main phases are ??Mg, ??Mg{sub 17}Al{sub 12} and Mg{sub 2}Sn in the Mg-3Al-3Sn alloy. With addition The tensile testing results showed that the yield and ultimate tensile strength and elongation of Mg-3Al-3Sn alloy increased by adding Sr up to 0.1 wt.% and then is gradually decreased with the addition of more alloying element.

Germen, GŁl?ah, E-mail: gulsahgermen@hotmail.com; ?evik, HŁseyin, E-mail: gulsahgermen@hotmail.com [Mersin University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Mersin, 33343 (Turkey); Kurnaz, S. Can [Sakarya University, Faculty of Engineering, Department of Metallurgical and Materials Engineering, Adapazarż, 54187 (Turkey)

2013-12-16T23:59:59.000Z

283

Final Technical Report Quantification and Standardization of Pattern Properties for the Control of the Lost Foam Casting Process  

SciTech Connect (OSTI)

This project takes a fresh look at the ''white side'' of the lost foam casting process. We have developed the gel front hypothesis for foam pyrolysis behavior and the magnetic metal pump method for controlling lost foam casting metal fill event. The subject of this report is work done in the improvement of the Lost Foam Casting Process. The original objective of this project was to improve the control of metal fill by understanding the influence of foam pattern and coating properties on the metal fill event. Relevant pattern properties could then be controlled, providing control of the metal fill event. One of the original premises of this project was that the process of metal fill was relatively well understood. Considerable previous work had been done to develop fluid mechanical and heat transfer models of the process. If we could just incorporate measured pattern properties into these models we would be able predict accurately the metal fill event. As we began to study the pyrolysis behavior of EPS during the metal fill event, we discovered that the chemical nature of this event had been completely overlooked in previous research. Styrene is the most prevalent breakdown product of EPS pyrolysis and it is a solvent for polystyrene. Much of the styrene generated by foam pyrolysis diffuses into intact foam, producing a molten gel of mechanically entangled polystyrene molecules. Much of the work of our project has centered on validation of this concept and producing a qualitative model of the behavior of EPS foam undergoing pyrolysis in a confined environment. A conclusion of this report is that styrene dissolution in EPS is a key phenomenon in the pyrolysis process and deserves considerable further study. While it is possible to continue to model the metal fill event parametrically using empirical data, we recommend that work be undertaken by qualified researchers to directly characterize and quantify this phenomenon for the benefit of modelers, researchers, and workers in the field. Another original premise of this project was that foam pattern and coating properties could be used to efficiently control metal fill. After studying the structure of EPS foam in detail for the period of this contract, we have come to the conclusion that EPS foam has an inherent variability at a scale that influences metal fill behavior. This does not allow for the detailed fine control of the process that we originally envisioned. We therefore have sought other methods for the control of the metal fill event. Of those, we now believe that the magnetic metal pump shows the most promise. We have conducted two casting trials using this method and preliminary results are very encouraging. A conclusion of our report is that, while every effort should continue to be made to produce uniform foam and coatings, the use of the magnetic metal pump should be encouraged and closed loop control mechanisms should be developed for this pouring method.

Ronald Michaels

2005-09-30T23:59:59.000Z

284

Field Evaluations of Low-Frequency SAFT-UT on Cast Stainless Steel and Dissimilar Metal Weld Components  

SciTech Connect (OSTI)

This report documents work performed at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington, and at the Electric Power Research Institute's (EPRI) Nondestructive Examination (NDE) Center in Charlotte, North Carolina, on evalutating a low frequency ultrasonic inspection technique used for examination of cast stainless steel (CSS) and dissimilar metal (DMW) reactor piping components. The technique uses a zone-focused, multi-incident angle, low frequency (250-450 kHz) inspection protocol coupled with the synthetic aperture focusing technique (SAFT). The primary focus of this work is to provide information to the United States Nuclear Regulatory Commission on the utility, effectiveness and reliability of ultrasonic testing (UT) inspection techniques as related to the inservice ultrasonic inspection of coarse grained primary piping components in pressurized water reactors (PWRs).

Diaz, Aaron A.; Harris, R. V.; Doctor, Steven R.

2008-11-01T23:59:59.000Z

285

Biomaterials 23 (2002) 44834492 A novel porous cells scaffold made of polylactidedextran blend by  

E-Print Network [OSTI]

-casting and particle-leaching [19,20], phase-separation [21], emulsion freeze dry- ing [22], gas-foaming [23] and 3D-printing

Yang, Jian

286

Ultrasonic Characterization of Cast Austenitic Stainless Steel Microstructure: Discrimination between Equiaxed- and Columnar-Grain Material Ė An Interim Study  

SciTech Connect (OSTI)

Ultrasonic nondestructive evaluation (NDE) and inspection of cast austenitic stainless steel (CASS) components used in the nuclear power industry is neither as effective nor reliable as is needed due to detrimental effects upon the interrogating ultrasonic beam and interference from ultrasonic backscatter. The root cause is the coarse-grain microstructure inherent to this class of materials. Some ultrasonic techniques perform better for particular microstructural classifications and this has led to the hypothesis that an ultrasonic inspection can be optimized for a particular microstructural class, if a technique exists to reliably classify the microstructure for feedback to the inspection. This document summarizes scoping experiments of in-situ ultrasonic methods for classification and/or characterization of the material microstructures in CASS components from the outside surface of a pipe. The focus of this study was to evaluate ultrasonic methods and provide an interim report that documents results and technical progress. An initial set of experiments were performed to test the hypothesis that in-service characterization of cast austenitic stainless steel (CASS) is feasible, and that, if reliably performed, such data would provide real-time feedback to optimize in-service inspections in the field. With this objective in mind, measurements for the experiment were restricted to techniques that should be robust if carried forward to eventual field implementation. Two parameters were investigated for their ability to discriminate between different microstructures in CASS components. The first parameter was a time-of-flight ratio of a normal incidence shear wave to that of a normal incidence longitudinal wave (TOFRSL). The ratio removed dependency on component thickness which may not be accurately reported in the field. The second parameter was longitudinal wave attenuation. The selected CASS specimens provided five equiaxed-grain material samples and five columnar-grain material samples for a two-class discrimination problem. Qualitative TOFRSL estimates and a threshold algorithm classified all 10 material samples correctly and indicated a reliable and robust technique. Qualitative longitudinal wave attenuation estimates and a threshold algorithm also classified all 10 materials samples correctly; however, the technique was not as robust as TOFRSL. The experiments provided promising results and demonstrated that good potential exists for future development of techniques to implement real-time classification of CASS material. However, the reported measurements need to be substantiated with measurements on additional specimens.

Ramuhalli, Pradeep; Good, Morris S.; Diaz, Aaron A.; Anderson, Michael T.; Watson, Bruce E.; Peters, Timothy J.; Dixit, Mukul; Bond, Leonard J.

2009-10-27T23:59:59.000Z

287

The Crystallization Behavior of Porous PLA Prepared by Modified Solvent Casting/Particulate Leaching Technique for Potential Use of Tissue Engineering Scaffold  

E-Print Network [OSTI]

The porous PLA foams potential for tissue engineering usage are prepared by a modified solvent casting/particulate leaching method with different crystallinity. Since in typical method the porogens are solved in the solution and flow with the polymers during the casting and the crystallinity behavior of PLA chains in the limited space cannot be tracked, in this work the processing is modified by diffusing the PLA solution into a steady salt stack. With a thermal treatment before leaching while maintaining the stable structure of the porogens stack, the crystallinity of porous foams is made possible to control. The characterizations indicate the crystallization of porous foams is in a manner of lower crystallibility than the bulk materials. Pores and caves of around 250{\\mu}m size are obtained in samples with different crystallinity. The macro-structures are not much impaired by the crystallization nevertheless the morphological effect of the heating process is still obvious.

Ran Huang; Xiaomin Zhu; Haiyan Tu; Ajun Wan

2014-04-14T23:59:59.000Z

288

Phased Array Ultrasonic Sound Field Mapping through Large-Bore Coarse Grained Cast Austenitic Stainless Steel (CASS) Components  

SciTech Connect (OSTI)

A sound field beam mapping exercise was conducted to assist in understanding the effects of coarse-grained microstructures found in cast austenitic stainless steel (CASS) materials on acoustic longitudinal wave propagation. Ultrasonic laboratory measurements were made on three specimens representing four different grain structures. Phased array (PA) probes were fixed on each specimen surface and excited in the longitudinal mode at specific angles while a point receiver was scanned in a raster pattern over the end of the specimen, generating a transmitted sound field image. Three probes operating at nominal frequencies of 0.5, 0.8, and 1.0 MHz were used. A 6.4 mm (0.25-in.) thick slice was removed from the specimen end and beam mapping was repeated three times, yielding four full sets of beam images. Data were collected both with a constant part path for each configuration (probe, specimen and slice, angle, etc.) and with a variable part path (fixed position on the surface). The base specimens and slices were then polished and etched to reveal measureable grain microstructures that were compared to the sound field interactions and scattering effects seen in the collected data.

Crawford, Susan L.; Cinson, Anthony D.; Prowant, Matthew S.; Coble, Jamie B.; Diaz, Aaron A.; Anderson, Michael T.

2012-09-01T23:59:59.000Z

289

SYMPOSIUM SUMMARY ISSUES AT THE FORE IN THE LAND OF MAGNUSON AND STEVENS  

E-Print Network [OSTI]

-CHAIRS: DAVID ARMSTRONG AND ANDRE PUNT SESSION AND PANEL CHAIRS Session 1: Penny Henderschedt Student Note-takers: S1 Beth Phillips, S2 Megsie Siple, S3 Peter Kuriyama

Washington at Seattle, University of

290

'Fore!' heads up, wide use of more flexible metallic glass coming...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

assumption of only a single type of initiation site, or STZ (shear transformation zone). Identification of multiple types of STZs could lead to new opportunities for controlling...

291

ELSEVIER Forest Ecology and Management 95 (1997) 109-115 Fores\\;;ology  

E-Print Network [OSTI]

area growth and foliage efficiency of loblolly pine plantations Kunjin Shi a, Quang V. Cao b7 with stand age, peaked between ages36 and 51, and decreased after that. Volume growth increased with leaf area for young stands and decreased for older stands, whereas foliage efficiency consistently decreased

Cao, Quang V.

292

/users/nfj/work/41/may/ms7146ForesC/7146.dvi  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

waves are shown to play an important role in power deposition in the off-axis electron cyclotron heating experiments on the DIII-D tokamak in which the effect known as the 'heat...

293

BIOSYSTEMATIC REVISION OF EPIMYRMA KRA USSEI, E. VANDELL AND E. FORELI  

E-Print Network [OSTI]

flat stones, most easily in old dry walls of terraced vineyards and olive orchards, but also in rocky

Villemant, Claire

294

Electron beam welding of ceramic to metal using fore-vacuum plasma electron source  

Science Journals Connector (OSTI)

The possibility of creating ceramic-metal joints by electron beam welding is considered. The welding of ... range (5Ė20 Pa) using a plasma electron source. The structure and composition of the ceramic ... breakin...

A. K. Goreev; V. A. Burdovitsin; A. S. KlimovÖ

2012-09-01T23:59:59.000Z

295

WA_1995_019_DONNELLY_CORPORATION_Waiver_of_Domestic_and_Fore...  

Broader source: Energy.gov (indexed) [DOE]

WA00030ASEAMERICASRequesttoAssignTitletoWaiver-Inv.pdf WA1995018OPTICALCOATINGLABORATORYINCWaiverofDomesti.pdf WA04009ROCKWELLSCIENTIFICCOWailve...

296

Usefulness of gel-casting method in the fabrication of nonstoichiometric CaZrO{sub 3}-based electrolytes for high temperature application  

SciTech Connect (OSTI)

Hydrogels obtained from lower toxicity monomers of N-(hydroxymethyl)acrylamide and N,N'-methylenebisacrylamide were applied to form nonstoichiometric CaZrO{sub 3}-based electrolytes. A coprecipitation-calcination method with ((NH{sub 4}){sub 2}C{sub 2}O{sub 4}) in concentrated NH{sub 3} aqueous solution was used to synthesise CaZrO{sub 3} involving 51 mol.% CaO (CZ-51) powder. The gas-tight CaZrO{sub 3}-based rods were prepared by the gel-casting method with 45 vol.% suspension and then sintered at 1500 deg. C-2 h. It was found that in low oxygen partial pressure, the nonstoichiometric CaZrO{sub 3} obtained by gel-casting method were pure oxide ion conductors. These samples exhibited comparable electrical conductivity values to isostatically compressed pellets starting from the same powder. The results of experiments on thermochemical stability of CZ-51 gel-cast shapes at high temperatures in air or gas mixtures involving 2-50 vol.% H{sub 2}, as well as the corrosion resistance in exhaust gases from a self-ignition engine were also presented and discussed. The thermal resistance of CaZrO{sub 3} obtained rods against molten nickel or iron was also examined. Based upon these investigations, it is evident that only in hydrogen-rich gas atmospheres can the stability of CaZrO{sub 3} shapes be limited due to the presence of CaO precipitation as a second phase. The nonstoichiometric CaZrO{sub 3} (CZ-51) gel-cast materials were also tested in solid galvanic cells, designed to study thermodynamic properties of oxide materials, important for SOFC and energy technology devices. In this way, the Gibbs energy of NiM{sub 2}O{sub 4}, M = Cr, Fe, at 650-1000 deg. C was determined. The CaZrO{sub 3} involving 51 mol.% CaO gel-cast sintered shapes seems to be promising solid electrolytes for electrochemical oxygen probes in control of metal processing and thermodynamic studies of materials important for the development of the energy industry.

Dudek, Magdalena [AGH - University of Science and Technology, Faculty of Energy and Fuels, 30-059 Cracow (Poland)

2009-09-15T23:59:59.000Z

297

Cast polycrystalline silicon photovoltaic module manufacturing technology improvements. Semiannual technical report, 1 January 1996--30 June 1996  

SciTech Connect (OSTI)

Two specific objectives of Solarex`s program are to reduce the manufacturing cost for polycrystalline silicon photovoltaic modules to less than $1.20/watt and to increase the manufacturing capacity by a factor of three. This report highlights accomplishments during the period of January 1 through June 30, 1996. Accomplishments include: began the conversion of production casting stations to increase ingot size; operated the wire saw in a production mode with higher yields and lower costs than achieved on the ID saws; developed and qualified a new wire guide coating material that doubles the wire guide lifetime and produces significantly less scatter in wafer thickness; completed a third pilot run of the cost-effective Al paste back-surface-field (BSF) process, verifying a 5% increase in cell efficiency and demonstrating the ability to process and handle the BSF paste cells; completed environmental qualification of modules using cells produced by an all-print metallization process; optimized the design of the 15.2-cm by 15.2-cm polycrystalline silicon solar cells; demonstrated the application of a high-efficiency process in making 15.2-cm by 15.2-cm solar cells; demonstrated that cell efficiency increases with decreasing wafer thickness for the Al paste BSF cells; qualified a vendor-supplied Tedlar/ethylene vinyl acetate (EVA) laminate to replace the combination of separate sheets of EVA and Tedlar backsheet; demonstrated the operation of a prototype unit to trim/lead attach/test modules; and demonstrated the operation of a wafer pull-down system for cassetting wet wafers.

Wohlgemuth, J. [Solarex Corp., Frederick, MD (United States)] [Solarex Corp., Frederick, MD (United States)

1997-01-01T23:59:59.000Z

298

Improvements in Low-Frequency, Ultrasonic Phased-Array Evaluation for Thick Section Cast Austenitic Stainless Steel Piping Components  

SciTech Connect (OSTI)

Research is being conducted for the U.S. Nuclear Regulatory Commission (NRC) at the Pacific Northwest National Laboratory (PNNL) to assess the effectiveness and reliability of advanced nondestructive examination (NDE) methods for the inspection of light water reactor (LWR) components. A primary objective of this work is to evaluate various NDE methods to assess their ability to detect, localize, and size cracks in coarse-grained steel components. This particular study focused on the evaluation of custom-designed, low-frequency (500 kHz) phased-array (PA) probes for examining welds in thick-section cast austenitic stainless steel (CASS) piping. In addition, research was conducted to observe ultrasonic sound field propagation effects from known coarse-grained microstructures found in parent CASS material. The study was conducted on a variety of thick-wall, coarse-grained CASS specimens that were previously inspected by an older generation 500-kHz PA-UT probe and acquisition instrument configuration. This comparative study describes the impact of the new PA probe design on flaw detection and sizing in a low signal-to-noise environment. The set of Pressurized Water Reactor Owners Group (PWROG) CASS specimens examined in this study are greater than 50.8-mm (2.0-in.) thick with documented flaws and microstructures. These specimens are on loan to PNNL from the Electric Power Research Institute (EPRI) NDE Center in Charlotte, North Carolina. The flaws contained within these specimens are thermal fatigue cracks (TFC) or mechanical fatigue cracks (MFC) and range from 13% to 42% in through-wall extent. In addition, ultrasonic signal continuity was evaluated on two CASS parent material ring sections by examining the edge-of-pipe response (corner geometry) for regions of signal loss.

Anderson, Michael T.; Crawford, Susan L.; Diaz, Aaron A.; Moran, Traci L.

2010-12-01T23:59:59.000Z

299

Heat transfer at the mold-metal interface in permanent mold casting of aluminum alloys project. Annual project status report for the period October 1, 1997 to September 30, 1998  

SciTech Connect (OSTI)

In the first year of this three-year project, substantial progress has been achieved. This project on heat transfer coefficients in metal permanent mold casting is being conducted in three areas. They are the theoretical study at the University of Michigan, the experimental investigations of squeeze casting and semi-solid casting at CMI-Tech Center, and the experimental investigation of low pressure permanent mold casting at Amcast Automotive. U-M did an initial geometry which was defined for ProCAST to solve, and then a geometry half the size was defined and solved using the same boundary conditions. A conceptual mold geometry was examined and is represented as an axisymmetric element.Furthermore, the influences of the localized heat transfer coefficients on the casting process were carefully studied. The HTC Evaluator has been proposed and initially developed by the U-M team. The Reference and the Database Modules of the HTC Evaluator have been developed, and extensively tested. A series of technical barriers have been cited and potential solutions have been surveyed. At the CMI-Tech Center, the Kistler direct cavity pressure measurement system has been purchased and tested. The calibrations has been evaluated. The probe is capable of sensing a light finger pressure. The experimental mold has been designed and modified. The experimental mold has been designed and modified. The first experiment is scheduled for October 14, 1998. The geometry of the experimental hockey-puck casting has been given to the U-M team for numerical analysis.

Pehlke, R.D.; Hao, S.W.

1998-09-30T23:59:59.000Z

300

Solid-phase synthesis of high-alumina cements by high-temperature treatment on the surface of molten cast iron  

SciTech Connect (OSTI)

The use of block and monolithic concreting technology in the construction of thermal power plants together with the technical and economic advantages arising from the use of high-alumina cements in the production of refractory concretes have made the development of new methods for the production of high-alumina cement clinkers mandatory. To this end the authors of this paper study the kinetics of synthesis of such clinkers obtained by their firing on the surface of molten cast iron as the heat transfer agent. Among the results presented are a structural and quantitative analysis of the clinker along with phase and activation energy studies.

Fedorov, N.F.; Gavrilov, A.P.; Ivanov, N.I.; Khalina, O.M.

1986-09-10T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Magnesium Powertrain Cast Components  

Broader source: Energy.gov [DOE]

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C.

302

MI-TP Cast:.  

E-Print Network [OSTI]

??The goal is to develop a 3D printed wrist orthesis to replace the traditional plaster type and increases wearing comfort for the patients. It shouldÖ (more)

Leon Loreto, P.

2014-01-01T23:59:59.000Z

303

Heat transfer at the mold-metal interface in permanent mold casting of aluminum alloys project. Quarterly project status report, January 1, 1998--March 31, 1998  

SciTech Connect (OSTI)

There have been numerous developments in the current project over the last three months. The most appropriate geometries for performing the interfacial heat transfer studies have been discussed with both of our Industrial Partners. Both companies have molds which may be available for adaptation to record the thermal history during casting required for determining interfacial heat transfer coefficients. The details of what instrumentation would be the most appropriate remain to be worked out, but the instrumentation would likely include thermocoupling in the mold cavity as well as in the mold wall, as well as pressure sensors in the squeeze casting geometry molds and ultrasonic gap monitoring in the low pressure and gravity fed permanent mold geometry molds. The first advisory committee meeting was held on February 6th, and the steering committee was apprised of the objectives of the program. The capabilities of the Industrial Partners were reviewed, as well as the need for the project to make use of resources from other CMC projects. The second full Advisory Committee Meeting will be held in early May.

Pehlke, R.D.; Hao, Shouwei; Cookson, J.M.

1998-03-31T23:59:59.000Z

304

The corrosion performance of die-cast magnesium alloy MRI230D in 3.5% NaCl solution saturated with Mg(OH){sub 2}  

SciTech Connect (OSTI)

The environmental behavior of die-cast magnesium alloy MRI230D designated for high-temperature applications was evaluated in comparison with regular AZ91D alloy. The microstructure examination was carried out using SEM, TEM, and X-ray diffraction analysis; the corrosion performance in 3.5% NaCl solution was evaluated by immersion test, salt spray testing, potentiodynamic polarization analysis, and stress corrosion behavior by Slow Strain Rate Testing (SSRT). Although the general corrosion resistance of MRI230D was slightly improved compared to that of AZ91D alloy its stress corrosion resistance was relatively reduced. The variations in the environmental behavior of the two alloys were mainly due to the differences in their chemical composition and microstructure after die casting. In particular, the differences were related to the reduced Al content in MRI230D and the addition of Ca to this alloy, which consequently affected its relative microstructure and electrochemical characteristics. - Research Highlights: {yields}Corrosion and SCC resistance of a new Mg alloy MRI230D was evaluated vs. regular AZ91D. {yields}MRI230D has a minor advantage in corrosion performance compared with AZ91D. {yields}The SCC resistance of MRI230D by SSRT analysis was relatively reduced. {yields}The reduced SCC resistance of MRI230D was due to the detrimental effect of Ca on ductility.

Aghion, E., E-mail: egyon@bgu.ac.il; Lulu, N.

2010-11-15T23:59:59.000Z

305

General Motors Perspective Dr.-Ing.Wolfgang Oelerich  

E-Print Network [OSTI]

) Hydrogen embrittlement test (SANDIA-led proposals to SAE, CSA, ISO) Seal materials for widened temperature Europe Compressed & Cryo- Compressed Hydrogen Storage Workshop 14th / 15th February 2011 Washington DC/h): 12 s Top speed:160 km/h Fuel:4.2 kg Compressed Hydrogen Gas (70 MPa) in three Type 4 filament wound

306

, ZHOU Q ing2jun , Chen R ay T.  

E-Print Network [OSTI]

le 2ring m ic roresona tor as a prac tica l optica l filte r. The influence of optica l loss is a lso ana lyzed. Low optica l loss w ill cause sha rp a ttenua tion of the filte ring response and seve re optica l loss a lso can w iden the bandw id th and inc rease the bandw id th ra tio. Key words: integ ra

Chen, Ray

307

Leadership in Challenging Times InspIrIng greatness  

E-Print Network [OSTI]

Christenson Arnold Fishman Sandra Kenney TRAFFIC MANAGER Karen Duarte PROJECT COORDINATORS Leslie Bucci '77 depression, allstate was launched, W.K. Kellogg doubled his advertising spending,and p&g became a marketing

Blais, Brian

308

Prof. Dr.-Ing. Heinz Pitsch Templergraben 64  

E-Print Network [OSTI]

Principles Investigation of Degradation Mechanisms for Pt-based Fuel Cell Electrodes Experimental as novel functional catalysts for ORR in fuel cells, primarily because of their high surface to volume the development of efficient cathodes, and the factors affecting it are not well understood. Various degradation

Peters, Norbert

309

Prof. Dipl.-Ing. Dr. Karl Kunisch Kaiserwaldweg 55  

E-Print Network [OSTI]

February 2005. Leader of Research Groups "Optimization and Control" at Radon Institute, Austrian Academy of Mathematics, Bonn, 2007. Alwin Walther Medaille, Darmstadt, 2008. Invited Lecture, International Congress programs in France and EU projects. Service to Profession Editorial Board 1. SIAM Journal on Control

Kunisch, Karl

310

The physical function-ing of a city sometimes  

E-Print Network [OSTI]

into waste products, some of which are injected into the urban atmosphere (i.e. waste heat, aerosols, pollu for the injection of waste heat (anthropogenic heat flux QF). The urban water balance (Figure 1b) must include two- tants, greenhouse gases). Many of the atmospheric wastes affect health, weath- er and climate at various

311

12 MOMENTUM SPrINg we can improve such processes."  

E-Print Network [OSTI]

or fiber into glucose and, ultimately, ethanol must be able to survive the high flow-through rate involved- ate fuel. There's even one microor- ganism in the rumen that converts fiber directly into ethanol down cellulose into starch and then into ethanol. And it's this processing that is the focus of animal

Hamza, Iqbal

312

Computational pproach to the Statistical echanics of rotein ol ing  

E-Print Network [OSTI]

, 1995 bstract A statistical mechanical approach to the protein folding problem is devel- oped based of the statistical mechanics of protein folding by com- puter simulation. Even though we have taken advantage of new". A theoretical understanding of the protein-folding problem, i.e. how proteins fold to their native states from

Istrail, Sorin

313

Fabrication and Performance of Ni-YSZ Anode Supported Cell for Coal Derived Syngas Application by Tape Casting and Spin Coating  

SciTech Connect (OSTI)

Ni-YSZ anode supported cell has been developed for direct utilization of coal derived syngas as fuel in the temperature range of 700-850į C. The porous Ni-YSZ anode substrate was prepared based on processes of slip casting and lamination of anode tape. Then thin-film YSZ electrolyte was deposited on pre-sintered anode substrate via a colloidal spin coating technique and an optimized final sintering route. Dense and crackfree YSZ electrolyte was successfully obtained after sintering at 1440C for 4hrs. Processing factors like pre-sintering of anode, solvent, coating cycles and sintering route on the final properties of YSZ film was studied. A power density of 0.62W/cm2 has been achieved for the anode supported cell tested in 97%H2/3%H2O at 800įC. EIS test results indicated the cell performance was essentially influenced by interfacial resistance and charge transfer process.

Gong, Mingyang (West Virginia U., Morgantown WV); Jiang, Yinglu (West Virginia U., Morgantown WV); Johnson, C.D.; Xingbo, Liu (West Virginia U., Morgantown WV)

2007-10-01T23:59:59.000Z

314

Search for solar axion emission from {sup 7}Li and D(p, ?){sup 3}He nuclear decays with the CAST ?-ray calorimeter  

SciTech Connect (OSTI)

We present the results of a search for a high-energy axion emission signal from {sup 7}Li (0.478 MeV) and D(p, ?){sup 3}He (5.5 MeV) nuclear transitions using a low-background ?-ray calorimeter during Phase I of the CAST experiment. These so-called ''hadronic axions'' could provide a solution to the long-standing strong-CP problem and can be emitted from the solar core from nuclear M1 transitions. This is the first such search for high-energy pseudoscalar bosons with couplings to nucleons conducted using a helioscope approach. No excess signal above background was found.

Andriamonje, S.; Aune, S.; Dafni, T.; Ferrer-Ribas, E. [DAPNIA, Centre d'…tudes Nuclťaires de Saclay, Gif-sur-Yvette (France); Autiero, D.; Barth, K.; Davenport, M.; Lella, L. Di [European Organization for Nuclear Research (CERN),CH-1211 GenŤve 23 (Switzerland); Belov, A. [Institute for Nuclear Research, Russian Academy of Sciences, Moscow (Russian Federation); BeltrŠn, B.; Carmona, J.M.; CebriŠn, S. [Instituto de FŪsica Nuclear y Altas EnergŪas, Universidad de Zaragoza, Zaragoza (Spain); Bršuninger, H.; Englhauser, J.; Friedrich, P. [Max-Planck-Institut fŁr extraterrestrische Physik, Giessenbachstrasse, 85748 Garching (Germany); Collar, J.I. [Enrico Fermi Institute and KICP, University of Chicago, Chicago, IL (United States); Eleftheriadis, C. [Aristotle University of Thessaloniki, Thessaloniki (Greece); Fanourakis, G. [National Center for Scientific Research ''Demokritos'', Athens (Greece); Fischer, H.; Franz, J., E-mail: David.Miller@slac.stanford.edu [Albert-Ludwigs-Universitšt Freiburg, Freiburg (Germany); Collaboration: CAST collaboration; and others

2010-03-01T23:59:59.000Z

315

Search for 14.4-KeV Solar Axions Emitted in the M1-Transition of Fe-57 Nuclei with CAST  

SciTech Connect (OSTI)

We have searched for 14.4 keV solar axions or more general axion-like particles (ALPs), that may be emitted in the M1 nuclear transition of 57Fe, by using the axion-to-photon conversion in the CERN Axion Solar Telescope (CAST) with evacuated magnet bores (Phase I). From the absence of excess of the monoenergetic X-rays when the magnet was pointing to the Sun, we set model-independent constraints on the coupling constants of pseudoscalar particles that couple to two photons and to a nucleon g{sub ay}|-1.19g{sub aN}{sup 0}+g{sub aN}{sup 3}| < 1.36 x 10{sup -16} GeV{sup -1} for ma < 0.03 eV at the 95% confidence level.

Andriamonje, S.; Aune, S.; /DAPNIA, Saclay; Autiero, D.; /CERN /Lyon, IPN; Barth, K.; /CERN; Belov, A.; /Moscow, INR; Beltran, B.; /Zaragoza U. /Queen's U., Kingston; Brauninger, H.; /Garching, Max Planck Inst., MPE; Carmona, J.M.; Cebrian, S.; /Zaragoza U.; Collar, J.I.; /Chicago U., EFI /Chicago U., KICP; Dafni, T.; /DAPNIA, Saclay /Darmstadt, Tech. Hochsch. /Zaragoza U.; Davenport, M.; /CERN; Di Lella, L.; /CERN /Pisa, Scuola Normale Superiore; Eleftheriadis, C.; /Aristotle U., Thessaloniki; Englhauser, J.; /Garching, Max Planck Inst., MPE; Fanourakis, G.; /Democritos Nucl. Res. Ctr.; Ferrer-Ribas, E.; /DAPNIA, Saclay; Fischer, H.; Franz, J.; /Freiburg U.; Friedrich, P.; /Garching, Max Planck Inst., MPE; Geralis, T.; /Democritos Nucl. Res. Ctr. /DAPNIA, Saclay /Moscow, INR /Zaragoza U. /British Columbia U. /Freiburg U. /Darmstadt, Tech. Hochsch. /DAPNIA, Saclay /Zaragoza U. /Frankfurt U. /Boskovic Inst., Zagreb /Freiburg U. /Munich, Max Planck Inst. /Boskovic Inst., Zagreb /Democritos Nucl. Res. Ctr. /Darmstadt, Tech. Hochsch. /Garching, Max Planck Inst., MPE /Boskovic Inst., Zagreb /CERN /Aristotle U., Thessaloniki /Boskovic Inst., Zagreb /Munich, Max Planck Inst. /Zaragoza U. /Chicago U., EFI /Chicago U., KICP /Stanford U., Phys. Dept. /SLAC /Zaragoza U. /CERN /DAPNIA, Saclay /CERN /Munich, Max Planck Inst. /Darmstadt, Tech. Hochsch. /Zaragoza U. /Aristotle U., Thessaloniki /Patras U. /Brookhaven /CERN /Munich, Max Planck Inst. /CERN /Chicago U., EFI /Chicago U., KICP /Zaragoza U. /Freiburg U. /CERN /CERN /Patras U.

2011-12-02T23:59:59.000Z

316

TESLA: Taylor Expanded Solar Analog Forecasting Bengu Ozge Akyurek, Alper Sinan Akyurek, Jan Kleissl and Tajana Simunic Rosing  

E-Print Network [OSTI]

TESLA: Taylor Expanded Solar Analog Forecasting Bengu Ozge Akyurek, Alper Sinan Akyurek, Jan- ergy resources within the Smart Grid, solar forecasting has become an important problem for hour]. It is difficult to obtain an accurate result from the weather and solar predictions. Accurate fore- casting

Simunic, Tajana

317

Mathematical models of natural gas consumption  

E-Print Network [OSTI]

Mathematical models of natural gas consumption Kristian Sabo, Rudolf Scitovski, Ivan of natural gas consumption Kristian Sabo, Rudolf Scitovski, Ivan Vazler , Marijana Zeki-Susac ksabo of natural gas consumption hourly fore- cast on the basis of hourly movement of temperature and natural gas

Scitovski, Rudolf

318

Short-term Wind Power Forecasting Using Advanced Statistical T.S. Nielsen1  

E-Print Network [OSTI]

Short-term Wind Power Forecasting Using Advanced Statistical Methods T.S. Nielsen1 , H. Madsen1 , H considered in the ANEMOS project for short-term fore- casting of wind power. The total procedure typically in for prediction of wind power or wind speed, estimating the uncertainty of the wind power forecast, and finally

Paris-Sud XI, Université de

319

Building a Parallel Spatio-Temporal Data-Text Corpus for Summary Ross Turner*, Somayajulu Sripada*, Ehud Reiter* and Ian P Davy**  

E-Print Network [OSTI]

*, Somayajulu Sripada*, Ehud Reiter* and Ian P Davy** * ** Dept of Computing Science, Aerospace and Marine Intl of pounds. Modern weather fore- casting is driven by Numerical Weather Prediction (NWP) Models. Recent advances in technology have seen road ice models become increasingly localised as meteorologi- cal

Reiter, Ehud

320

Technical Report DHPC-015 Spatial Interpolation on Distributed,  

E-Print Network [OSTI]

meteorological models provide a regular prediction of atmospheric weather con- ditions, typically on a forward the best numerical weather models are not able to provide detailed high-resolution fore- casts and have for numerical weather mod- els. Of particular interest is the new infra-red channel added to the GMS series

Hawick, Ken

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Nonlinear Processes in Geophysics (2001) 8: 439448 Nonlinear Processes  

E-Print Network [OSTI]

implementations of ensemble fore- casting in global numerical weather prediction models rely on two different and theoretical elements. Of particular practical inter- est is the problem of numerical weather prediction. One) equations to operational numerical weather prediction mod- els (e.g. Buizza and Palmer, 1995; Buizza, 1995

Boyer, Edmond

322

Atmos. Chem. Phys., 11, 21272143, 2011 www.atmos-chem-phys.net/11/2127/2011/  

E-Print Network [OSTI]

simulations enhanced the sea/bay breezes, but the model per- formance in predicting local wind fields parameterizations in the WRF model using measurements during the Texas Air Quality Study 2006 field campaign S in the WRF (Weather Research and Fore- casting) in simulating urban boundary layer (UBL) was in- vestigated

Meskhidze, Nicholas

323

Atmos. Chem. Phys., 14, 159174, 2014 www.atmos-chem-phys.net/14/159/2014/  

E-Print Network [OSTI]

and Fore- casting model with Chemistry (WRF-Chem) is used to sim- ulate the direct and semi daytime heating (0.3 K) is largely confined above the low-level clouds, and results in a local convergence-level cloud frac- tion decreases more than 10 %. However, the change of lo- cal wind, including sea breeze

Meskhidze, Nicholas

324

Atmos. Chem. Phys., 12, 17591783, 2012 www.atmos-chem-phys.net/12/1759/2012/  

E-Print Network [OSTI]

of the chemistry version of the Weather Research and Fore- casting model (WRF-Chem) are both discussed. WRF in the upslope wind speed and boundary-layer depth contribute to differences in the observed and simu- lated likely affects local chemistry. Contributions from other sources of pollutants, such as those

Meskhidze, Nicholas

325

P11.3 EFFECTS OF NESTING FREQUENCY AND LATERAL BOUNDARY PERTURBATIONS ON THE DISPERSION OF LIMITED-AREA ENSEMBLE FORECASTS  

E-Print Network [OSTI]

P11.3 EFFECTS OF NESTING FREQUENCY AND LATERAL BOUNDARY PERTURBATIONS ON THE DISPERSION OF LIMITED of ensemble fore- casts, also lack consistent perturbations. Pertur- bations growing on the nested domain on the effect of LBC update in- terval on the nested-grid ensemble dispersion. Other results will be presented

Xue, Ming

326

Engaging the public and stakeholders in the develop-  

E-Print Network [OSTI]

Demand Forecast Ad- visory Committee Reviews the methods, demand forecasting tools, input assumptions and forecast results, used in developing the Council's demand fore- casts Natural Gas Advisory Committee Reviews the Council's fuel price forecasting assumptions and models for natural gas, oil, and coal System

327

Oxidation of Slurry Aluminide Coatings on Cast Stainless Steel Alloy CF8C-Plus at 800oC in Water Vapor  

SciTech Connect (OSTI)

A new, cast austenitic stainless steel, CF8C-Plus, has been developed for a wide range of high temperature applications, including diesel exhaust components, turbine casings and turbocharger housings. CF8C-Plus offers significant improvements in creep rupture life and creep rupture strength over standard CF8C steel. However, at higher temperatures and in more aggressive environments, such as those containing significant water vapor, an oxidation-resistant protective coating will be necessary. The oxidation behavior of alloys CF8C and CF8C-Plus with various aluminide coatings were compared at 800oC in air plus 10 vol% water vapor. Due to their affordability, slurry aluminides were the primary coating system of interest, although chemical vapor deposition (CVD) and pack cementation coatings were also compared. Additionally, a preliminary study of the low cycle fatigue behavior of aluminized CF8C-Plus was conducted at 800oC. Each type of coating provided substantial improvements in oxidation behavior, with simple slurry aluminides showing very good oxidation resistance after 4,000 h testing in water vapor. Preliminary low cycle fatigue results indicated that thicker aluminide coatings degraded high temperature fatigue properties of CF8C-Plus, whereas thinner coatings did not. Results suggest that appropriately designed slurry aluminide coatings are a viable option for economical, long-term oxidation protection of austenitic stainless steels in water vapor.

Haynes, James A [ORNL; Armstrong, Beth L [ORNL; Dryepondt, Sebastien N [ORNL; Kumar, Deepak [ORNL; Zhang, Ying [Tennessee Technological University

2013-01-01T23:59:59.000Z

328

Short-Term Load Forecasting This paper discusses the state of the art in short-term load fore-  

E-Print Network [OSTI]

spectrum of time intervals. In therange of seconds, when load variationsare small and random, the automatic by a number of generation control functions such as hydro scheduling, unit commitment, hydro-ther- mal present, functions such as fuel, hydro, and maintenance scheduling are performed to ensure that the load

Gross, George

329

A Plasma-Cathode Electron Source for Focused-Beam Generation in the Fore-Pump Pressure Range  

Science Journals Connector (OSTI)

A plasma electron source is described that forms a focused beam ... is generated in a hollow-cathode discharge. Electrons are extracted through a single emission hole in the anode. The source provides an electron

V. A. Burdovitsin; I. S. Zhirkov; E. M. OksÖ

330

Effect of tungsten addition on the toughness and hardness of Fe{sub 2}B in wear-resistant Fe-B-C cast alloy  

SciTech Connect (OSTI)

The effects of tungsten additions of 0%, 1.12%, 2.04%, and 3.17% (in wt.%) on the morphology, fracture toughness and micro-hardness of Fe{sub 2}B in Fe-B-C cast alloy were investigated. The results indicate that, with the increase of tungsten addition, the morphology and distribution of Fe{sub 2}B have no change and a new W-containing phase, except the (Fe, W){sub 2}B with a certain tungsten solution, does not form, and that the fracture toughness of Fe{sub 2}B increases first and then decreases, while the hardness increases first and then has a little change. Compared with the fracture toughness (3.8 MPa{center_dot}m{sup 1/2}) of Fe{sub 2}B without tungsten addition, the toughness at 2.04 wt.% tungsten can be improved by about above 80% and achieves about 6.9 MPa{center_dot}m{sup 1/2}, and variation characteristics of hardness and toughness of Fe{sub 2}B were also testified by viewing the indentation marks and cracks on the Fe{sub 2}B, respectively. - Highlights: Black-Right-Pointing-Pointer Poor toughness of Fe2B decreases obviously the wear resistance of the alloy. Black-Right-Pointing-Pointer As W content increases, Fe2B's toughness increases first and then decreases. Black-Right-Pointing-Pointer As W content increases, Fe2B's hardness first increases and then has little change. Black-Right-Pointing-Pointer The toughness at 2.04 % W can be improved by above 80% more than that at 0% W.

Huang, Zhifu, E-mail: hzf@mail.xjtu.edu.cn; Xing, Jiandong; Lv, Liangliang

2013-01-15T23:59:59.000Z

331

Improvements in 500-kHz Ultrasonic Phased-Array Probe Designs for Evaluation of Thick Section Cast Austenitic Stainless Steel Piping Welds  

SciTech Connect (OSTI)

PNNL has been studying and performing confirmatory research on the inspection of piping welds in coarse-grained steels for over 30 years. More recent efforts have been the application of low frequency phased array technology to this difficult to inspect material. The evolution of 500 kHz PA probes and the associated electronics and scanning protocol are documented in this report. The basis for the probe comparisons are responses from one mechanical fatigue crack and two thermal fatigue cracks in large-bore cast mockup specimens on loan from the Electric Power Research Institution. One of the most significant improvements was seen in the use of piezo-composite elements in the later two probes instead of the piezo-ceramic material used in the prototype array. This allowed a reduction in system gain of 30 dB and greatly reduced electronic noise. The latest probe had as much as a 5 dB increase in signal to noise, adding to its flaw discrimination capability. The system electronics for the latest probe were fully optimized for a 500 kHz center frequency, however significant improvements were not observed in the center frequency of the flaw responses. With improved scanner capabilities, smaller step sizes were used, allowing both line and raster data improvements to be made with the latest probe. The small step sizes produce high resolution images that improve flaw discrimination and, along with the increased signal-to-noise ratio inherent in the latest probe design, enhanced detection of the upper regions of the flaw make depth sizing more plausible. Finally, the physical sizes of the probes were progressively decreased allowing better access to the area of interest on specimens with weld crowns, and the latest probe was designed with non-integral wedges providing flexibility in focusing on different specimen geometries.

Crawford, Susan L.; Cinson, Anthony D.; Moran, Traci L.; Anderson, Michael T.; Diaz, Aaron A.

2011-02-01T23:59:59.000Z

332

Ablation Casting Evaluation for High Volume Structural Castings  

Broader source: Energy.gov [DOE]

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

333

ITP Metal Casting: Implementation of Metal Casting Best Practices  

Broader source: Energy.gov [DOE]

The project examined cases where metal casters had implemented ITP research results and detailed the benefits they received due to that implementation.

334

Materials Technologies: Goals, Strategies, and Top Accomplishments...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Components made from iron and steel castings have been used since the early days of automobile manufacturing, creat- ing a large knowledge base for designers to draw on when...

335

Technical Letter Report Assessment of Ultrasonic Phased Array Inspection Method for Welds in Cast Austenitic Stainless Steel Pressurizer Surge Line Piping JCN N6398, Task 1B  

SciTech Connect (OSTI)

Research is being conducted for the U.S. Nuclear Regulatory Commission (NRC) at the Pacific Northwest National Laboratory (PNNL) to assess the effectiveness and reliability of advanced nondestructive examination (NDE) methods for the inspection of light water reactor components. The scope of this research encompasses primary system pressure boundary materials including cast austenitic stainless steels (CASS); dissimilar metal welds; piping with corrosion-resistant cladding; weld overlays, inlays and onlays; and far-side examinations of austenitic piping welds. A primary objective of this work is to evaluate various NDE methods to assess their ability to detect, localize, and size cracks in coarse-grained steel components. In this effort, PNNL supports cooperation with Commissariat ŗ líEnergie Atomique (CEA) to assess reliable inspection of CASS materials. The NRC Project Manager has established a cooperative effort with the Institut de Radioprotection et de Surete Nucleaire (IRSN). CEA, under funding from IRSN, are supporting collaborative efforts with the NRC and PNNL. Regarding its work on the NDE of materials, CEA is providing its modeling software (CIVA) in exchange for PNNL offering expertise and data related to phased-array detection and sizing, acoustic attenuation, and back scattering on CASS materials. This collaboration benefits the NRC because CEA performs research and development on CASS for …lectricitť de France (EdF). This technical letter report provides a summary of a technical evaluation aimed at assessing the capabilities of phased-array (PA) ultrasonic testing (UT) methods as applied to the inspection of welds in CASS pressurizer (PZR) surge line nuclear reactor piping. A set of thermal fatigue cracks (TFCs) was implanted into three CASS PZR surge-line specimens (pipe-to-elbow welds) that were fabricated using vintage CASS materials formed in the 1970s, and flaw responses from these cracks were used to evaluate detection and sizing performance of the PA-UT methods applied. This effort was comprised of multiple elements that included use of microstructural knowledge (dimensional analysis, grain orientation, and grain type) as well as sound field modeling to more effectively modify inspection parameters and enhance the inspection outcomes. Advanced probe design and sound field simulations were employed to enhance detection and characterization of circumferentially oriented flaws, and an assessment of lateral (circumferential) flaw localization capability and performance was also conducted. An evaluation of flaw detection, length sizing, depth sizing, and signal-to-noise ratio was performed for all flaws in the subject specimens, as a function of various inspection parameters, and finally, measurements were made to quantify and assess the baseline CASS material noise and its potential impact on flaw detection.

Diaz, Aaron A.; Cinson, Anthony D.; Crawford, Susan L.; Mathews, Royce; Moran, Traci L.; Anderson, Michael T.

2009-07-28T23:59:59.000Z

336

DOE CAST ALL EMPLOYEE NOTIFICATION  

Broader source: Energy.gov (indexed) [DOE]

NOTIFICATION AND FEDERAL EMPLOYEE ANTIDISCRIMINATION AND NOTIFICATION AND FEDERAL EMPLOYEE ANTIDISCRIMINATION AND RETALIATION ACT (No FEAR Act) On March 3, 2011, Secretary Steven Chu issued a memorandum for all DOE employees, entitled "Equal Employment Opportunity and Diversity Policy Statement". In his policy statement, Secretary Chu expressed his commitment to equal employment opportunity and diversity, and his support of the rights of employees to participate in the EEO process without fear of reprisal. The Secretary's statement accords with the principles of the Notification and Federal Employee Antidiscrimination and Retaliation Act of 2002

337

Casting out the printers' devils  

Science Journals Connector (OSTI)

... insight, applied to the burgeoning scientific culture of seventeenth-century England, that underlies Adrian Johns's provocative and stimulating, if ultimately not wholly satisfactory, book. He argues that ... by the same printer; this took in at least one early reader, the diarist John Evelyn, who dutifully had the offending item bound into his set of the journal. ...

Michael Hunter

1998-12-10T23:59:59.000Z

338

appg.vp:CorelVentura 7.0  

Gasoline and Diesel Fuel Update (EIA)

1999 1999 (AEO99) are generated with the National Energy Modeling System (NEMS), developed and main- tained by the Office of Integrated Analysis and Fore- casting of the Energy Information Administration (EIA). In addition to its use in the development of the AEO projections, NEMS is also used in analyti- cal studies for the U.S. Congress and other offices within the Department of Energy. The AEO fore- casts are also used by analysts and planners in other government agencies and outside organizations. The projections in NEMS are developed with the use of a market-based approach to energy analysis. For each fuel and consuming sector, NEMS balances the energy supply and demand, accounting for the economic competition between the various energy fuels and sources. The time horizon of NEMS is the midterm period, approximately 20 years in the future. In order to represent the regional differences

339

CANTON LAKESHORE CANTON E BEST CON NEAUT GIDD INGS EAST N ELLSWORT  

U.S. Energy Information Administration (EIA) Indexed Site

MCKEESPORT MCKEESPORT COR AOPOLIS-MOON REDHAW ST. CLAIR SC ROGGSFIELD FRANKLIN -OAK FOREST RIMERSBURG RENNERD AL E GREENVILL E PAT MOS CRABTR EE BLAC K ASH ROYALT ON N BAKERSTOWN QUEEN ROU GH RUN LUCAS BLAC K H ILL CRESTON WAT TSVILLE WADSWORTH -NORT H OAKLAN D HOM EWORT H UNIT Y ESSELBRUN ALAMED A PAR K-CROOKED RU CHERRY GROVE FRENC HTOWN ST EWART RUN MILL C REEK GLENF IELD-MOU NT NEBO HICKORY E HARRISVILLE E LEST ER GRIGGS CORNERS EN GLAN D WEST VIL LE LAKE BAILEY LAKE OAKFORD BR UNSWICK N HOR ACE WALBORN RESERVOIR YOUN GSVILLE RPD-LORAIN -1 INGOMAR-GRUBBS BIG MEADOWS GARD EN ISLE TURT LE CREEK LEWIST ON E BR USH CR EEK FOOT VILLE BU LL CREEK BESSEMER EAGLEVILLE LIVER POOL E RIDGEVILLE E EVANS CIT Y GUIT ONVILLE WOLF S COR NERS WIN DFALL ABBEYVILLE ROC K CAMP LEATH ER WOOD AR COLA CR EEK MEC HANICST OWN NINE MILE RU N WALKCHALK RENFR EW-MCCALMONT BU FFALO N VALENCIA WELLIN GT ON

340

CLYDE L. 0 INGS, M.D.,Ph.D. RICHARD G. SNYDER, Ph.D.  

E-Print Network [OSTI]

. The results consist of 33 isometric exertion measurements which include the torques developed around the wrist an adjustable instrumented exoskeleton for the right side of the body. Careful attention was directed towards

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

1997/98 CSULB Catalog Student Services 21 ing, computer science, engineering, finance, government,  

E-Print Network [OSTI]

-5772 for information on the services offered. Cooperative Education (Co-Op) Cooperative Education internships offer units of elective academic credit. Educational Participation in Communities (EPIC) The Educational-division Co-op courses are available for up to 6 units of elective academic credit. Counseling

Sorin, Eric J.

342

The Inglis-Belyaev formula and the hypothesis of the two-quasiparticle excitations (version 2012)  

E-Print Network [OSTI]

The goal of the present work is to revisit the cranking formula of the vibrational parameters, especially its well known drawbacks. The latter can be summarized as spurious resonances or singularities in the behavior of the mass parameters in the limit of unpaired systems. It is found that these problems are simply induced by the presence of two derivatives in the formula. In effect, this formula is based on the hypothesis of contributions of excited states due only to two quasiparticles. But it turns out that this is not the case for the derivatives. We deduce therefore that the derivatives are not well founded in the formula. We propose then simply to suppress these terms from the formula. Although this solution seems to be simplistic, it solves definitively all its inherent problems.

B. Mohammed-Azizi

2011-02-18T23:59:59.000Z

343

Bala, K., P. Dutre (eds.). Render-ing Techniques 2005. Springer-  

E-Print Network [OSTI]

. Introduction to Scientific Computing: A Matrix Approach Using MATLAB. Pren- tice Hall 1999 Gries, D., W. de its texts and mono- graphs. The department is proud to have faculty- authored texts that set-Wesley 1988 Coleman, T.F., C. Van Loan. Handbook for Matrix Computa- tions. SIAM Teitelbaum, T., T.W. Reps

Keinan, Alon

344

Institute for Micro System Prof. Dr.-Ing. habil Jrg Mller  

E-Print Network [OSTI]

silicon. Polymer Electrolyte Membrane (PEM) Fuel Cells PEM fuel cells are expected to be the main on crystalline thick film silicon solar cells on glass substrates and polymer fuel cells Micro Total Analysis solar cell, potentially high efficient and low cost, is devel- oped, which is based on a rapid melting

Moeller, Ralf

345

E-Mobility Research Network Prof. Dr.-Ing. Dietmar Ghlich  

E-Print Network [OSTI]

fuel cells Improved fuel cell cathode catalysts for oxygen reduction 2. Ethanol fuel cell range extenders Highly efficient multi metallic anode materials for Direct Ethanol Fuel Cell Range Extenders 3. PEM and alkaline water electrolyzers Low cost catalysts for acid and alkaline water splitting Prof

Berlin,Technische Universität

346

ing the distribution of those galaxies, the way they clump and spread out, scientists  

E-Print Network [OSTI]

scrutiny. WMAP, SDSS, and a new set of supernova observations re- leased this year are beginning to give. If the dark energy is stronger than a critical value, then it will eventually tear apart galaxies, solar

Yildiz, Ahmet

347

IntroduCtIon: QuantIfyIng soCIal develoPment  

E-Print Network [OSTI]

civilization are most often traced back to the ancient Greeks and romans, although other advocates identify pre

Landweber, Laura

348

Protective interior wall and attach8ing means for a fusion reactor vacuum vessel  

DOE Patents [OSTI]

An array of connected plates mounted on the inside wall of the vacuum vessel of a magnetic confinement reactor in order to provide a protective surface for energy deposition inside the vessel. All fasteners are concealed and protected beneath the plates, while the plates themselves share common mounting points. The entire array is installed with torqued nuts on threaded studs; provision also exists for thermal expansion by mounting each plate with two of its four mounts captured in an oversize grooved spool. A spool-washer mounting hardware allows one edge of a protective plate to be torqued while the other side remains loose, by simply inverting the spool-washer hardware.

Phelps, Richard D. (Greeley, CO); Upham, Gerald A. (Valley Center, CA); Anderson, Paul M. (San Diego, CA)

1988-01-01T23:59:59.000Z

349

INFORMATION EXCELLENTIA CoLumbIA ENgINEErINg 229  

E-Print Network [OSTI]

is working on "service engineering," a concept similar to financial engineering. "It is similar to selling their options," he said. "There's an art and science to engineering and pricing services, but it is always easier when they are win-win for buyers and sellers," Gallego said. "I'm using service engineering

Hone, James

350

Chair for Applied Informatics IV Prof. Dr.-Ing. Stefan Jablonski  

E-Print Network [OSTI]

Architecture Service Provision (Applications) Billing module Service provision (computing, storage) Service) - data security and privacy - availability and sustainability and therefore limits efficiency - usability and ease of use (e.g. single login) - data security and privacy - availability and sustainability

Ullmann, G. Matthias

351

ing together for a safer community The following information is provided to offer  

E-Print Network [OSTI]

else has secured the door. · Report any defective lights or locks to security as soon as possible. · Never leave valuables on show in your car, lock them out of sight. · Keep the telephone number

Royal Holloway, University of London

352

Q&A: FORGE-ing Ahead to Clean, Low-Cost Geothermal Energy | Department...  

Energy Savers [EERE]

research site in the United States that allows scientists and engineers to develop and test new technologies for Enhanced Geothermal Systems (EGS). EGS are the next frontier in...

353

CLEAN(ING) COAL: THE ENTHYMEMATIC QUALITIES OF IMAGES, EDITING AND COLOR IN CLEAN COAL ADVERTISING.  

E-Print Network [OSTI]

??Energy advertisements in the United States have increased in both prominence and political importance in recent years. The increasing pressure of environmental concerns requires energyÖ (more)

Struth, Matthew Steven

2014-01-01T23:59:59.000Z

354

Univ.-Prof. Dr.-Ing. Utz von Wagner 21.03.2012 Technische Universitt Berlin,  

E-Print Network [OSTI]

). For market sectors such as large-series and ecological cars, AMT offers the advantage of lower weight are at highest level. For high class sport cars, vehicle dynamic performances and driving quality can be strongly, driving conditions and selected program. The quality of the vehicle propulsion as perceived by the driver

Berlin,Technische Universität

355

INFORMATION EXCELLENTIA CoLumbIA ENgINEErINg202  

E-Print Network [OSTI]

energy use. "The path towards green computing systems starts with more efficient communication to the times needed for computation, on-chip communication was basically instantaneous," Carloni explained communication infrastruc- tures that make it easier to integrate new components into our designs," he said. His

Hone, James

356

MODELING TB AND HIV CO-INFECTIONS Lih-Ing W. Roeger Zhilan ...  

E-Print Network [OSTI]

and the overall reproductive number for the system, R = max{R1, R2}. The .... The TB/HIV model is given by the following systems of eight ordinary differential.

2009-09-25T23:59:59.000Z

357

College of ARCHITeCTURe, ART & PlAnnIng Department of Architecture  

E-Print Network [OSTI]

-Active Polymer at an Architectural Scale | ETHZ and EMPA Arch 4101/4102 /5101 & 7912 Smart Materials as smart materials. Materials are considered smart materials if they can respond to an external stimulus due to changes in their environment. For example, Shape Memory Alloys are a polymorphic smart material

358

Example of High Dimensional Contract An exotic high dimensional option is the ING-Coconote option  

E-Print Network [OSTI]

Industrials GlaxoSmithKline PLC London Pharmaceuticals HBOS PLC London Banks HSBC Holdings PLC (UK Reg) London

Oosterlee, Cornelis W. "Kees"

359

Prediction of flow stress in a wide temperature range involving phase transformation for as-cast TiĖ6AlĖ2ZrĖ1MoĖ1V alloy by artificial neural network  

Science Journals Connector (OSTI)

The isothermal compressions of as-cast TiĖ6AlĖ2ZrĖ1MoĖ1V titanium alloy in a wide temperature range of 1073Ė1323†K and strain rate range of 0.01Ė10†s?1 with a reduction of 60% were conducted on a Gleeble-1500 thermo-mechanical simulator. The flow stress shows a complex non-linear intrinsic relationship with strain, strain rate and temperature, meanwhile the strain-softening behavior articulates dynamic recrystallization mechanism in ? phase, dynamic recovery mechanism in ? phase and their comprehensive function during phase transformation (?†+†?). Based on the experimental data, an artificial neural network (ANN) was trained with standard back-propagation learning algorithm to generalize the complex deformation behavior characteristics. In the present ANN model, strain and temperature were taken as inputs, and flow stress as output. A comparative study has been made on ANN model and improved Arrhenius-type constitutive model, and their predictability has been evaluated in terms of correlation coefficient (R) and average absolute relative error (ARRE). During ?, ?†+†? and ? phase regime, R-value and ARRE-value for the improved Arrhenius-type model are 0.9824% and 6.02%, 0.9644% and 21.02%, and 0.9627% and 12.38%, respectively, while the R-value and ARRE-value for the ANN model are 0.9992% and 0.91%, 0.9996% and 1.47%, and 0.9975% and 2.17%, respectively. The predicted strainĖstress curves outside of experimental conditions articulate the similar intrinsic relationships with experimental strainĖstress curves. The results show that the feed-forward back-propagation ANN model can accurately tracks the experimental data in a wide temperature range and strain rate range associated with interconnecting metallurgical phenomena, and in further it has a good capacity to model complex hot deformation behavior of titanium alloy outside of experimental conditions.

Guo-zheng Quan; Wen-quan Lv; Yuan-ping Mao; Yan-wei Zhang; Jie Zhou

2013-01-01T23:59:59.000Z

360

A shadow cast on a good cause  

Science Journals Connector (OSTI)

... academic community as a whole, but of all who value the civic virtues of personal liberty. Sadly, too little attention has been paid to this shadow on an otherwise good ...

1989-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Casting inorganic structures with DNA molds  

Science Journals Connector (OSTI)

...carbon film thickness of the TEM grid, the dielectric function...glow-discharged carbon-coated TEM grids for 2 min and then wiped away...Maximal Raman optical activity in hybrid single molecule-plasmonic nanostructures...the National Nanotechnology Infrastructure Network (NNIN), which is...

Wei Sun; Etienne Boulais; Yera Hakobyan; Wei Li Wang; Amy Guan; Mark Bathe; Peng Yin

2014-11-07T23:59:59.000Z

362

Casting inorganic structures with DNA molds  

Science Journals Connector (OSTI)

...Raman optical activity in hybrid single molecule-plasmonic nanostructures...National Nanotechnology Infrastructure Network (NNIN), which...experiments, and analyzed the data; E.B. designed and...simulations, and analyzed the data; Y.H. designed and...simulation, and analyzed the data; W.L.W. performed...

Wei Sun; Etienne Boulais; Yera Hakobyan; Wei Li Wang; Amy Guan; Mark Bathe; Peng Yin

2014-11-07T23:59:59.000Z

363

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

Cheng University PLACE Rm716, CCMS & New Physics Building, NTU Abstract We have developed a series of Multi-Coefficient Density Functional Theory (MC-DFT) that effectively extrapolates the basis set

Wu, Yih-Min

364

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

, National Taiwan Normal University PLACE Rm716, CCMS & New Physics Building, NTU Abstract We study the effect of chemical modifications on electron transport of CNT-based nano-electronics. In the first part

Wu, Yih-Min

365

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

-Ming Lu National Center for High Performance Computing PLACE Rm716, CCMS & New Physics Building, NTU and buckling strains of a single- and multi-walled carbon nanotube and the effect from fixed boundary layers

Wu, Yih-Min

366

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

716, CCMS & New Physics Building, NTU Abstract Previous ammonia oxidation studies reported ca. 100 a maximum of 65% at the highest temperature (773 K) and effective oxygen-to-ammonia ratio of 140, whereas

Wu, Yih-Min

367

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

Building, NTU Abstract We develop the quantum theory for the electromagnetic induced transparency (EIT of the Fermi sea can destroy the EIT effect even at zero temperature. This quantum EIT property is mostly

Wu, Yih-Min

368

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

of Atomic and Molecular Sciences, Academia Sinica PLACE Rm716, CCMS & New Physics Building, NTU Abstract fields. We have circumvented this limitation by generating an effective vector gauge potential

Wu, Yih-Min

369

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

Building, NTU Abstract The local-density approximation (LDA) to the ground-state density functional theory being important to reproduce the excitonic effect. We also present illustrative calculations

Wu, Yih-Min

370

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

-wave feature in the evanescent regime leads to the formation of the edge state. The physical origin of the edge with a gapless energy spectrum, applying U0 to both edges opens up an energy gap. Both edge states and energy gap

Wu, Yih-Min

371

Casting inorganic structures with DNA molds  

Science Journals Connector (OSTI)

...cathodoluminescence, and electron energy-loss spectroscopy study . Nano Lett. 12...Simulating electron energy loss spectroscopy with the...optical activity in hybrid single molecule-plasmonic nanostructures...National Nanotechnology Infrastructure Network (NNIN...Science, Office of Basic Energy Sciences, U.S. Department...

Wei Sun; Etienne Boulais; Yera Hakobyan; Wei Li Wang; Amy Guan; Mark Bathe; Peng Yin

2014-11-07T23:59:59.000Z

372

Structural Cast Magnesium Development (SCMD) AMD 111  

Broader source: Energy.gov (indexed) [DOE]

* Redesign an existing aluminum engine cradle to magnesium for the 2006 Corvette ZO6 vehicle at no cost penalty and no changes to vehicle build cradle installation sequence. *...

373

Magnesium Powertrain Cast Components Project (AMD 304)  

Broader source: Energy.gov (indexed) [DOE]

February 28, 2008 Task 3 Research Address MPCC-identified critical gaps in fundamental science of Mg for powertrain applications and initiate research in these areas *...

374

Method of casting pitch based foam  

DOE Patents [OSTI]

A process for producing molded pitch based foam is disclosed which minimizes cracking. The process includes forming a viscous pitch foam in a container, and then transferring the viscous pitch foam from the container into a mold. The viscous pitch foam in the mold is hardened to provide a carbon foam having a relatively uniform distribution of pore sizes and a highly aligned graphic structure in the struts.

Klett, James W. (Knoxville, TN)

2002-01-01T23:59:59.000Z

375

Magnesium Powertrain Cast Components Project (AMD 304)  

Broader source: Energy.gov [DOE]

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

376

Ultra Large Castings For Lightweight Vehicle Structures  

Broader source: Energy.gov [DOE]

2009 DOE Hydrogen Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting, May 18-22, 2009 -- Washington D.C

377

Structural Cast Magnesium Development (SCMD) AMD 111  

Broader source: Energy.gov [DOE]

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

378

Joint CQSE and CASTS Seminar Weekly Seminar  

E-Print Network [OSTI]

principles calculations, we have explored the effects of mechanical strains on the electronic band gap, VBM/CBM positions, and the effective masses of holes and electrons in anatase TiO2. Our calculations showed of the electronic band gaps of the semiconductor-based photocatalysts such as TiO2 is of great importance

Wu, Yih-Min

379

Casting of particle-based hollow shapes  

DOE Patents [OSTI]

A method for the production of hollow articles made of a particle-based material; e.g., ceramics and sintered metals. In accordance with one aspect of the invention, a thermally settable slurry containing a relatively high concentration of the particles is coated onto a prewarmed continuous surface in a relatively thin layer so that the slurry is substantially uniformly coated on the surface. The heat of the prewarmed surface conducts to the slurry to initiate a reaction which causes the slurry to set or harden in a shape conforming to the surface. The hardened configurations may then be sintered to consolidate the particles and provide a high density product.

Menchhofer, Paul (Oak Ridge, TN)

1997-01-01T23:59:59.000Z

380

Fluid casting of particle-based articles  

DOE Patents [OSTI]

A method for the production of articles made of a particle-based material; e.g., ceramics and sintered metals. In accordance with one aspect of the invention, a thermally settable slurry containing a relatively high concentration of the particles is introduced into an immiscible, heated fluid. The slurry sets or hardens into a shape determined by the physical characteristics of the fluid and the manner of introduction of the slurry into the fluid. For example, the slurry is pulse injected into the fluid to provide spherical articles. The hardened spheres may then be sintered to consolidate the particles and provide a high density product.

Menchhofer, Paul (Oak Ridge, TN)

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Casting of particle-based hollow shapes  

DOE Patents [OSTI]

A method for the production of hollow articles made of a particle-based material; e.g., ceramics and sintered metals. In accordance with one aspect of the invention, a thermally settable slurry containing a relatively high concentration of the particles is coated onto a prewarmed continuous surface in a relatively thin layer so that the slurry is substantially uniformly coated on the surface. The heat of the prewarmed surface conducts to the slurry to initiate a reaction which causes the slurry to set or harden in a shape conforming to the surface. The hardened configurations may then be sintered to consolidate the particles and provide a high density product.

Menchhofer, Paul (Oak Ridge, TN)

1995-01-01T23:59:59.000Z

382

Vibration assisted filling of thin section castings.  

E-Print Network [OSTI]

??Understanding of the mechanism of the vibration needed to fill thin section or one with sharp edges in profile shapes and clarifying the dominant controlÖ (more)

Abdul Karem, Waleed

2009-01-01T23:59:59.000Z

383

Method of casting patterned dielectric structures  

DOE Patents [OSTI]

A pattern of dielectric structures are formed directly on a substrate in a single step using sol-gel chemistry and molding procedures. The resulting dielectric structures are useful in vacuum applications for electronic devices. Porous, lightweight structures having a high aspect ratio that are suitable for use as spacers between the faceplate and baseplate of a field emission display can be manufactured using this method.

Poco, John F. (Livermore, CA); Hrubesh, Lawrence W. (Livermore, CA)

2001-01-01T23:59:59.000Z

384

Processing Texas Broilers.  

E-Print Network [OSTI]

to be held more than a few hours be- fore slaughter were transferred from crates to-. batteries immediately after being unloaded from the truck. They were weighed and moved to the battery-holding area to wait for slaughter later in the day or for further... are handled rapidly. Birds are weighed only at the time of purchase. With the battery system, they must be weighed a second time just before slaugh- ter to determine the weight gained or lost dur- ing the feeding period. Some processors are of the opinion...

Mountney, G. J.; Gardner, F. A. (Frederick)

1957-01-01T23:59:59.000Z

385

Texas Rice, Volume IV, Number 3  

E-Print Network [OSTI]

striving to help farmers get the most out of their farming operations, whether that be through production guidelines, eco- nomic education or fore- casting tools. As farm equipment has become more and more sophisti- cated, so has the farmerís toolbox. Today... management measures as recommended by the RiceDevA program. The program was developed by Ted Wilson, Yubin Yang, Peter Lu, Jenny Wang, Jack Vawter and Jim Stansel, with numerous advisors and reviewers identifying correc- tions and changes to the program...

386

ITP Metal Casting: Energy and Environmental Profile of the U.S. Metal casting Industry  

Broader source: Energy.gov [DOE]

The DOE's Office of Industrial Technologies has formed apartnership with the U.S. metalcasting industry to accelerate the development of technoloiges and processes that will improve the industry's energy efficiency and environmental performance.

387

ITP Metal Casting: A Vision for the U.S. Metal Casting Industry...  

Broader source: Energy.gov (indexed) [DOE]

defects. An appropriate blend of statistical, shop floor layout, computer numerical control, and scheduling techniques is not currently used to optimize operating...

388

ITP Metal Casting: A Vision for the U.S. Metal Casting Industry: 2002 and Beyond  

Broader source: Energy.gov [DOE]

The U.S. metalcasting industry will exhibit increased strength, vitality and innovation, contributing to the nationís economy and security.

389

SmartCast - Novel Textile Sensors for Embedded Pressure Sensing of Orthopedic Casts  

E-Print Network [OSTI]

>. [4] Buechley, Leah. "LilyPad Arduino: How an Open SourceSD Card by calling the Arduino * SD Card library functionson return code from Arduino library * Inputs: * Outputs:

Danilovic, Andrew

2013-01-01T23:59:59.000Z

390

ITP Metal Casting: Advanced Melting Technologies: Energy Saving Concepts and Opportunities for the Metal Casting Industry  

Broader source: Energy.gov [DOE]

The study examines current and emerging melting technologies and discusses their technical barriers to scale-up issues and research needed to advance these technologies, improving melting efficiency, lowering metal transfer heat loss, and reducing scrap.

391

Materials Science and Engineering A247 (1998) 229238 Microstructures and mechanical properties of commercial titanium  

E-Print Network [OSTI]

distribution function analysis indicated the presence of an orientation tube in the cast specimens near (1( 01 ingots, hot forging into billets, followed by several hot rolling, heat treatment, and surface grinding, processing losses exceed- ing 50% are not uncommon making commercial pro- duction of titanium foils very

Garmestani, Hamid

392

In ltration Processes in Composite Materials Manufacturing: Modelling and Qualitative Results  

E-Print Network [OSTI]

Injection Mould- ing, consisting in the injection of a liquid into a porous medium made of reinforcing properties of the liquid (thermal vari- ation and curing) and the mechanical properties of the solid Moulding, Structural Resin Injection Moulding or Sque- eze Casting which consist in injecting a polymeric

Preziosi, Luigi

393

Materials Science and Engineering A 496 (2008) 247255 Contents lists available at ScienceDirect  

E-Print Network [OSTI]

to improv- ing the energy efficiency of existing automobile designs. Recent research in this field has a b s t r a c t The plasticity of coarse and grain-refined Mg AZ80 alloys in the as-cast, -dissolved aggregate to plastic flow relies on the behaviour of har

Niewczas, Marek

394

InquIry, DIscovery In engIneerIng anD scIence fall 2013 college of engIneerIng anD scIence One of five Clemson NSF  

E-Print Network [OSTI]

in mechanical engineering, is levitating water drops -- research that could offer coal miners better protection not an epidemiologist, Saylor devotes careful attention to coal miners' lungs. (See "A Drop of Water. A Speck of Coal with other colleges and industry · Expand economic development and outreach programs through private

Duchowski, Andrew T.

395

Cultivat(ing) modernities : the Society for National Heritage, political propaganda and public architecture in twentieth-century Iran  

E-Print Network [OSTI]

Beginning in 1922, under the auspices of the Pahlavi dynasty of Iran, the tombs of selected historical figures were systematically destroyed to make way for modern mausoleums erected as metaphors for an "Aryan" nation in ...

Grigor, Talinn, 1972-

2005-01-01T23:59:59.000Z

396

Tactical urbanism, public policy reform, and 'innovation spotting' by government : from Park(ing) Day to San Francisco's parklet program  

E-Print Network [OSTI]

This thesis examines the prospects and impacts of tactical urbanism (TU). While tactical urbanism remains primarily a subcultural movement, it is beginning to gain traction in popular culture in traditionally politically ...

Davidson, Mariko Mura

2013-01-01T23:59:59.000Z

397

Adapting numerical representations of lung contours us-ing Case-Based Reasoning and Artificial Neural Net-  

E-Print Network [OSTI]

and Nuclear Safety, France {farah,broggio,franck}@irsn.fr Abstract. In case of a radiological emergency situation involving accidental human exposure, a dosimetry evaluation must be established as soon, a dosimetry evaluation must be estab- lished for each potential victim (subject) as soon as possible. In most

Paris-Sud XI, Université de

398

Nature and Provincial Political Authority in Late Ch'ing Times: Chang Chih-tung in Canton, 1884-1889  

E-Print Network [OSTI]

to Stanley Spector, Li Hung-chang and the Huai Army: a Study in Nineteenth-century Chinese Regionalism, Seattle, 1964. Also Michael's earlier study, 'Military Organization and Power Structure of China During the Taiping Rebellion,' Pacific Historical... private sources to tap in Hupei. The court did in fact provide a grant of two million taels through the Board of Revenue in connexion with the planned Peking-Hankow Railway. 85 However, rising tension with Russia and Japan in the north-east led...

Bays, Daniel H.

1970-10-01T23:59:59.000Z

399

he economies of China and India are grow-ing at a rapid clip. But these nations seem  

E-Print Network [OSTI]

--the early industrial revolution--when the world was still relatively empty of humans and their built . . . is based on a number of assump- tions [that] emerged during a period--the early industrial revolution

Vermont, University of

400

hal-00878684,version1-30Oct2013 ings, deep reservoirs, confined pillars, etc. An accurate mechanical model is especially  

E-Print Network [OSTI]

mechanical model is especially needed in the analysis of damage, aging and degradation phenomena. Following identified by Ortiz (1985), whose model, based on mixture the- ory and damage mechanics, met most Mechanics, introducing phenomenological damage variables. Although damage is inherently a non isotropic

Boyer, Edmond

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

PĖT evolution and timing of a late Palaeozoic fore-arc system and its heterogeneous Mesozoic overprint in north-central Chile (latitudes 31Ė32įS)  

Science Journals Connector (OSTI)

...Universita§t Potsdam after neutron activation of polished sections (1 cm diameter) at the Geesthacht Neutron Facility (GeNF) of the GKSS in Geesthacht, Germany. The polished thick-sections were wrapped in commercial Al foils and set into...

ARNE P. WILLNER; HANS-JOACHIM MASSONNE; UWE RING; MASAFUMI SUDO; STUART N. THOMSON

402

Ultra Large Castings for Lightweight Vehicle Structures ?AMD 406  

Broader source: Energy.gov [DOE]

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

403

Secondary Waste Form Development and OptimizationóCast Stone  

SciTech Connect (OSTI)

Washington River Protection Services is considering the design and construction of a Solidification Treatment Unit (STU) for the Effluent Treatment Facility (ETF) at Hanford. The ETF is a Resource Conservation and Recovery Act-permitted, multi-waste, treatment and storage unit and can accept dangerous, low-level, and mixed wastewaters for treatment. The STU needs to be operational by 2018 to receive secondary liquid wastes generated during operation of the Hanford Tank Waste Treatment and Immobilization Plant (WTP). The STU to ETF will provide the additional capacity needed for ETF to process the increased volume of secondary wastes expected to be produced by WTP.

Sundaram, S. K.; Parker, Kent E.; Valenta, Michelle M.; Pitman, Stan G.; Chun, Jaehun; Chung, Chul-Woo; Kimura, Marcia L.; Burns, Carolyn A.; Um, Wooyong; Westsik, Joseph H.

2011-07-14T23:59:59.000Z

404

Reworking Myth : casting lots for the future of library workplaces.  

E-Print Network [OSTI]

??The purpose of this work is to provide understanding regarding the future of library workplaces by, first, establishing the relationship between Joseph Campbell's functions ofÖ (more)

Johnson, Joshua Kevin.

2009-01-01T23:59:59.000Z

405

ITP Metal Casting: Corrosion Testing Practices ? High Alloy...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Office of Energy Efficiency and Renewable Energy INDUSTRIAL TECHNOLOGIES PROGRAM Corrosion Testing Practices - High Alloy Corrosion Program This subtask under ESMARRT Material...

406

Development of Integrated Die Casting Process for Large Thin...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

of Lightweight Magnesium Parts for Near-Term Automotive Applications Most large automobile parts, such as door panels, are made from multi-piece, multi- step steel stamping...

407

Working-class royalty: bees beat the caste system  

Science Journals Connector (OSTI)

...develop into queens at a rate greater than that favoured by the colony...that these erstwhile lower class individuals achieve. Indeed...unequal, and a move towards greater opportunity, as occurs in...that are provisioned with a greater quantity of food. The smaller...

2005-01-01T23:59:59.000Z

408

Cast Alloys for Advanced Ultra Supercritical Steam Turbines  

SciTech Connect (OSTI)

Develop advanced coal-based power systems capable of 45Ė50 % efficiency at <$1,000/kW (in 2002 dollars). Develop technologies for capture and sequestration of CO2 that result in: ē <10% increase in the cost of electricity in an IGCC-based plant ē <35% increase in the cost of electricity for pulverized coal boilers Demonstrate coal-based energy plants that offer near-zero emissions (including CO2) with multiproduct production

G. R. Holcomb, P. D. Jablonski, and P. Wang

2010-10-01T23:59:59.000Z

409

CAST: Caltech Asynchronous Synthesis Tools Alain J. Martin & Mika Nystrom  

E-Print Network [OSTI]

by program transformations. The system to be designed is #12;rst described in the high-level language CHP of concurrency among the CHP compo- nents and the desired granularity for each CHP process are achieved, the CHP processes are translated into the HSE (handshaking expansion) nota- tion, which is CHP in which all

Martin, Alain

410

Graded pitch electromagnetic pump for thin strip metal casting systems  

DOE Patents [OSTI]

A metal strip casing system is provided with an electromagnetic pump which includes a pair of primary blocks having a graded pole pitch, polyphase ac winding and being arranged on opposite sides of a movable heat sink. A nozzle is provided for depositing liquid metal on the heat sink such that the resulting metal strip and heat sink combination is subjected to a longitudinal electromagnetic field which increases in wavelength in the direction of travel of the heat sink, thereby subjecting the metal and heat sink to a longitudinal force having a magnitude which increases in the direction of travel. 4 figs.

Kuznetsov, S.B.

1986-04-01T23:59:59.000Z

411

Invitus, Regina: Aeneas Cast as the Unwilling and Unfit Hero  

E-Print Network [OSTI]

dismissively of her, he closes with a touching simile that laments his love that has been lost: nec meum respectet, ut ante, amorem qui illius culpa cecidit velut prati ultima flos, praetereunte postquam tactus aratro est. (21-24) Let her not look...-drinking, elegant, and worldly image and lifestyle he preferred.48 This association with Dionysus served him well in the early days of the triumvirate, and he was well received in the East. Plutarch shows us that upon arrival at Ephesus, the Greeks welcomed him...

Geer, Rachel Leah

2011-06-14T23:59:59.000Z

412

SoftCast: Clean-slate Scalable Wireless Video  

E-Print Network [OSTI]

Video broadcast and mobile video challenge the conventional wireless design. In broadcast and mobile scenarios the bit rate supported by the channel differs across receivers and varies quickly over time. The conventional ...

Jakubczak, Szymon

2011-02-15T23:59:59.000Z

413

Hydrogen and Nitrogen Control in Ladle and Casting Operations  

SciTech Connect (OSTI)

In recent years there has been an increasing demand to reduce and control the amount of dissolved gases in steel. Hydrogen and nitrogen are two of the most important gases which when dissolved in liquid steel affect its properties significantly. Several steelmaking additions have been investigated in this research for their effect on the hydrogen and nitrogen content of steels. It has been established that calcium hydroxide (hydrated lime) acts as a source of hydrogen. Carburizers, such as metallurgical coke, were found to result in no hydrogen pickup when added to liquid steel. Addition of petroleum coke, on the other hand, increased the hydrogen content of liquid steel. Ferroalloy such as medium carbon ferromanganese when added to the liquid iron was found to increase its nitrogen content, the increase being proportional to the amount of ferroalloy added. Similarly, addition of pitch coke, which had a significant nitrogen impurity, increased the nitrogen content of liquid iron. A mathematical model was developed to quantify the absorption of nitrogen and hydrogen from the air bubbles entrained during tapping of liquid steel. During the bottom stirring of liquid metal in a ladle, the inert gas escaping from the top displaces the slag layer and often forms an open eye. The absorption of atmospheric nitrogen through the spout eye was estimated for different slag thickness and gas flow rate. The ultimate goal of this research was to develop a comprehensive set of equations which could predict the nitrogen and hydrogen pickup from their various sources. Estimates of hydrogen and nitrogen pickup during the steel transfer operations such as tapping and ladle stirring and the predicted pickup from steelmaking additions were integrated into empirical equations. The comprehensive model is designed to predict the gas pickup under varying operating conditions such as the metal oxygen and sulfur content, the total tapping or stirring time, the stirring gas flow rate and the slag thickness. The model predictions are based on mathematical and empirical evidence which are derived from thermodynamic and kinetic fundamental principles.

Richard J. Fruehan; Siddhartha Misra

2005-01-15T23:59:59.000Z

414

The Athlit ra: Classical and Hellenistic bronze casting  

E-Print Network [OSTI]

. . . . . . . . . . . . . . . . . 13. The two pairs of protrusions on the bottom plate 14. Plaster mold fragment from the Cairo Museum. . 15. Cowl ceiling and bottom plate wall thickness. 16. Transverse mark on the bottom plate and sides of the ram. . 17. Oblique marks merging... or ~ plaster Mold dismantled to release model Bt Corefirst'options-e, f A. Non-refractory core B. Re&actory core Non refractory core is replaced with a refractory core applied by hand or poured in as a liquid clay mixture C. Mold is lined with wax...

Oron, Asaf

2012-06-07T23:59:59.000Z

415

Reliability Tools for Resonance Inspection of Light Metal Castings  

Broader source: Energy.gov [DOE]

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

416

Turbine component casting core with high resolution region  

DOE Patents [OSTI]

A hollow turbine engine component with complex internal features can include a first region and a second, high resolution region. The first region can be defined by a first ceramic core piece formed by any conventional process, such as by injection molding or transfer molding. The second region can be defined by a second ceramic core piece formed separately by a method effective to produce high resolution features, such as tomo lithographic molding. The first core piece and the second core piece can be joined by interlocking engagement that once subjected to an intermediate thermal heat treatment process thermally deform to form a three dimensional interlocking joint between the first and second core pieces by allowing thermal creep to irreversibly interlock the first and second core pieces together such that the joint becomes physically locked together providing joint stability through thermal processing.

Kamel, Ahmed; Merrill, Gary B.

2014-08-26T23:59:59.000Z

417

The Position of Dalit Women in Caste System  

E-Print Network [OSTI]

Assessment or Educationally Disadvantaged Groups in Nepal. Kathmandu: CERID Parijat. Naikape Sarkini. In Aljun Bishwokarma (Ed.) Pratib~dh Bi≠ monthly (2056) Year I. Issue 3. Aswin Kirtik. Kathm;ndu: Prmlbodh Family. Report ofa Meeting on the Dafil Women...

Luintel, Samira

2003-01-01T23:59:59.000Z

418

ColorCast: Deterministic Broadcast in Powerline Networks with Uncertainties  

E-Print Network [OSTI]

with a simulation study on real grid topologies, which confirms the benefits of COLORCAST compared to state-hop low and medium voltage PLC networks to enable "smart grid" functionalities in the distribution grid [10], [15]. Smart grid ap- plications are envisioned to use medium voltage PLC networks to monitor e

Schmid, Stefan

419

Modeling and Optimization of Direct Chill Casting to Reduce Ingot...  

Office of Scientific and Technical Information (OSTI)

... 20 5.4 Composition depth profiles into the fracture surface (a) at a primary aluminum dendrite and (b) in the eutectic region....

420

AMD 405: Improved Automotive Suspension Components Cast with...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Maryland. merit08mccarty5.pdf More Documents & Publications AMD 601 High Integrity -Magnesium Automotive Components (HI-MAC) Low Cost PM Technology for Particle Reinforced...

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Budget proposal casts doubt over physics portal's future  

Science Journals Connector (OSTI)

... The DoE's Office of Scientific and Technical Information (OSTI) launched PubScience in 1999 to give physical scientists the kind of free, journal cross ... PubMed. But the House subcommittee says in its bill that it is concerned that the OSTI is duplicating information services already available from commercial publishers, and urges a careful review ...

Declan Butler

2001-06-28T23:59:59.000Z

422

The dynamic fracture toughness of nodular cast iron  

E-Print Network [OSTI]

(1973). 5. ASTM E23-81, American Society foz Testing and Materials Standards, E23 (1981). 6. R. W. Hertzberg, Deformation and Fracture Mechanics of Engineering Materials, John Wiley and Sons, New York (1976) . 7. S. T. Rolfe and J. M. Barsom...

Andler, Marjorie Ruth

2012-06-07T23:59:59.000Z

423

E-Voting Problems Cast Shadow on Elections  

E-Print Network [OSTI]

Phones Into Microscopes Health Insurance Apps to Connect with Members More News > Home > Mobile News > Featured News > IPods Twice as Dangerous for Drivers, Study Finds IPods Twice as Dangerous for Drivers, Study Finds BY LORIEN CROW | MON JAN 09, 2012 1:23 PM Pods are twice as dangerous as cell phones

Salvucci, Dario D.

424

History of mirror casting, figuring, segmentation and active optics  

Science Journals Connector (OSTI)

The accurate general figures for the mirrors with which one could achieve the optimum ... the beginning of the twentieth century by Karl Schwarzschild. A first design for a reflecting telescope ... dispersing len...

Lothar Noethe

2009-08-01T23:59:59.000Z

425

Apparatus for injection casting metallic nuclear energy fuel rods  

DOE Patents [OSTI]

Molds for making metallic nuclear fuel rods are provided which present reduced risks to the environment by reducing radioactive waste. In one embodiment, the mold is consumable with the fuel rod, and in another embodiment, part of the mold can be re-used. Several molds can be arranged together in a cascaded manner, if desired, or several long cavities can be integrated in a monolithic multiple cavity re-usable mold.

Seidel, Bobby R. (Idaho Falls, ID); Tracy, Donald B. (Firth, ID); Griffiths, Vernon (Butte, MT)

1991-01-01T23:59:59.000Z

426

Taipei terminal rail station : casting an urban gateway  

E-Print Network [OSTI]

Access is a key issue in the design of railway stations. The evolution of the train station typology, has resulted in many types of stations based on the development of the stations' access. Since rail travel on a larger ...

Tsai, May Deanna

1991-01-01T23:59:59.000Z

427

AMD 405: Improved Automotive Suspension Components Cast with...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

lm040osborne2011o.pdf More Documents & Publications Development of Steel Fastener Nano-Ceramic Coatings for Corrosion Protection of Magnesium Parts (AMD-704) 2011 Annual...

428

PNNL: Mechanistic-Based Ductility Prediction for Complex Mg Castings  

Broader source: Energy.gov [DOE]

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

429

PNNL: Mechanistic-Based Ductility Prediction for Complex Mg Castings  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

430

Efficient, Stable Infrared Photovoltaics Based on Solution-Cast Colloidal  

E-Print Network [OSTI]

's College Road, Toronto, Ontario M5S 3G4, Canada S olution-processed photovoltaics offer solar energy and optimized to this purpose. Organic solar cells have already achieved 6.5% solar conversion efficien- cies.6 multijunction solar cells offer the prospect of exceeding 40% efficiency7 through the inclusion of infrared

431

Process to Continuously Melt, Refine, and Cast High Quality Steel  

Broader source: Energy.gov [DOE]

This factsheet describes a project to conduct research and development targeted at designing an innovative steelmaking process to produce higher quality steel faster than traditional batch processes while consuming less energy and other resources.

432

PNNL: Mechanistic-Based Ductility Prediction for Complex Mg Castings...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting lm057sun2012o.pdf More Documents & Publications PNNL: Mechanistic-Based Ductility Prediction...

433

Enhanced Resonance Inspection for Light Metal Castings | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. lm027sun2010o.pdf More Documents & Publications FY 2009 Progress Report for Lightweighting...

434

Total Space Heat-  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Buildings Energy Consumption Survey: Energy End-Use Consumption Tables Total Space Heat- ing Cool- ing Venti- lation Water Heat- ing Light- ing Cook- ing Refrig- eration...

435

WA_00_030_ASE_AMERICAS_Request_to_Assign_Title_to_Waiver-Inv...  

Broader source: Energy.gov (indexed) [DOE]

WA1995019DONNELLYCORPORATIONWaiverofDomesticandFore.pdf WA1995018OPTICALCOATINGLABORATORYINCWaiverofDomesti.pdf WA03032RWESCHOTTSOLARINCWaiverof...

436

The National Energy Modeling System The  

Gasoline and Diesel Fuel Update (EIA)

2000 2000 (AEO2000) are generated from the National Energy Modeling System (NEMS), developed and main- tained by the Office of Integrated Analysis and Fore- casting of the Energy Information Administration (EIA). In addition to its use in the development of the AEO projections, NEMS is also used in analytical studies for the U.S. Congress and other offices within the Department of Energy. The AEO forecasts are also used by analysts and planners in other govern- ment agencies and outside organizations. The projections in NEMS are developed with the use of a market-based approach to energy analysis. For each fuel and consuming sector, NEMS balances the energy supply and demand, accounting for the eco- nomic competition between the various energy fuels and sources. The time horizon of NEMS is the mid- term period, approximately 20 years in the future. In order to represent the regional differences

437

DOE Railcar Fleet Asset Planning & Lessons Learned  

Broader source: Energy.gov (indexed) [DOE]

Railcar Railcar Fleet DOE Railcar Fleet Asset Planning & Lessons Learned Dave Lojek - US DOE Lessons Learned Dave Lojek US DOE Environmental Management Consolidated Business Center (EMCBC) Support: Office of Packaging & Transportation (EM-45) Di i O i Discussion Overview *Completed Rail Campaigns - LLW -Fernald, Mound, Savannah River *In Progress - LLW -Savannah River, Brookhaven, Moab *ForeCast - LLW -Portsmouth, Paducah, D&D, DUF6 2 *Lessons Learned F ld Cl P j t Fernald Closure Project First Rail Shipment: April 26, 1999 First Rail Shipment: Final Rail Shipment: April 26, 1999 October 11, 2006 Unit Trains Shipped: 201 Railcars Shipped: 12,000 3 Tons Shipped: 1,200,000 F ld R il E i t Fernald Rail Equipment * 3 - Locomotives * 250 Total Railcars In Service 190 New Purchase Gov't Gondolas 60 Leased Gondola Railcars

438

0 EC C / I O O C 2001 Conference I ncor porat ing A C0 FT M onday 2 July-T hursday 5 July 2001  

E-Print Network [OSTI]

00 GHz. i s dg nom on- d at 10 M bps using a scH--secded FP-L!) m m a L CFB G W i¬£ ¬£ i s tech to a hncarly cu - ed fib- B ragg gm¬£ 1g (L CFB G) [3] . Fig. 1 show s thc exper im ental scu p uscd for ra k spacing. ¬Ę 1c L CFB G has 12.l 4 nm of spc ¬§ - B W from 1544 05 nm to 15562 0 M n ¬¶ ¬£ 68 % of rm ecum ty

Choi, Woo-Young

439

The Center for Petroleum and Geosystems Engineering will be host-ing our 6th annual consortium meeting on August 16-18, 2006. We  

E-Print Network [OSTI]

Consortium on Formation Evaluation has been a period of consolidation of research projects, appli- cations outstanding programmers, we have been able to improve the efficiency and oper- ability of our Matlab toolboxes collaboration with consortium members through summer intern- ships and new in-house application projects. Our

Texas at Austin, University of

440

[McC86] John McCarthy. Application of circumscription to formaliz ing commonsense knowledge. Artificial Intelligence, 28:89--116,  

E-Print Network [OSTI]

:365--385, 1991. [GM92] John Grant and Jack Minker. Deductive database systems. In Stuart C. Shapiro, editor C. Shapiro, editor, Encyclopedia of Artificial Intelligence, pages 873-- 891. John Wiley & Sons, 2nd. Constraint networks. In Stuart C. Shapiro, edi­ tor, Encyclopedia of Artificial Intelligence, pages 276

Dechter, Rina

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

[1] Mihalef et al, "Atrioventricular blood flow simulation based on patient-specific data," in Proceed-ings of FIMH 2009, 2009.  

E-Print Network [OSTI]

suffers a heart attack or any other heart abnormality, the way in which blood moves through the heart of abnormal hearts, including those that suf- fered from heart attacks or have blood clots. Run simulation specific computational flow modeling of the left heart via combination of magnetic resonance imaging

442

Abstract--The prevalence of Alzheimer's disease (AD) is ris-ing alarmingly as the average age of our population increases.  

E-Print Network [OSTI]

be effectively used for early diagnosis of AD using an ensemble of classifiers based decision fusion approach. INTRODUCTION lzheimer's disease is a neurodegenerative disorder cha- racterized by progressive cognitive by accumulation of two misfolded proteins, -amyloid and hyperphosphorylated­au, which can only be detected

Polikar, Robi

443

Zgoubi-ing AGS : spin motion with snakes and jump-quads,G? = 43.5 through G? = 46.5 and beyond  

SciTech Connect (OSTI)

This Note reports on the first, and successful, simulations of particle and spin dynamics in the AGS in presence of the two helical snakes and of the tune-jump quadrupoles, using the ray-tracing code Zgoubi. It includes DA tracking in the absence or in the presence of the two helical snakes, simulation of particle and spin motion in the snakes using their magnetic field maps, spin flipping at integer resonances in the 36+Qy depolarizing resonance region, with and without tune-jump quadrupole gymnastics. It also includes details on the setting-up of Zgoubi input data files and on the various numerical methods of concern in and available from Zgoubi.

Meot F.; Ahrens& #44; L.; Glenn& #44; J.; Huang& #44; H.; Luccio& #44; A.; MacKay& #44; W.W.; Roser& #44; T.; Tsoupas& #44; N.

2009-10-01T23:59:59.000Z

444

Harold and Inge Marcus Department of Industrial and Manufacturing Engineering Fall 2010 Lubrication and Tool Wear in the Turning of Powdered Metal M2 Steel Valve  

E-Print Network [OSTI]

finish and tool wear was measured. Utilizing a One-Way ANOVA Test and Tukey's Test, the collected data-way ANOVA and Tukey's Tests were performed on the data in order to determine which lubricant performed done through Tukey's Test and general observation, that Microcut 3680 performed the best out

Demirel, Melik C.

445

TOBUREN, MARK CHRISTOPHER. Power Analysis and Instruction Schedul-ing for Reduced di/dt in the Execution Core of High-Performance Microprocessors.  

E-Print Network [OSTI]

to a processor's average peak power dissipation is the pres- ence of high di=dt in its execution core. High-energy-cycle energy constraints. This thesis proposes a novel approach to instruction scheduling based on the con- cept of schedule slack, which builds energy e cient schedules by limiting the energy dissipated

Conte, Thomas M.

446

This is an incredible time to be a biologist. Every day, new research find-ings are presented, from the level of single molecules to whole ecosystems. A  

E-Print Network [OSTI]

deserts, mountains, shrublands, wetlands, rocky coasts, kelp forests and offshore islands. The many, biogeography, behavioral ecology, plant ecology, ethnobotany, plant-animal interactions, and conservation

de Lijser, Peter

447

Evaluation of the carbon content of aerosols from the burn- ing of biomass in the Brazilian Amazon using thermal, op- tical and thermal-optical analysis methods  

E-Print Network [OSTI]

from Smoldering Biomass Combustion. Atmos. Chem. Phys. , 10,aerosols emitted during biomass combustion [Robinson et al.burning samples. Combustion of biomass produces EC a and

Soto-Garcia, Lydia L.

2012-01-01T23:59:59.000Z

448

E-Print Network 3.0 - aft elastic response Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

velocity, the sum of fore-aft accelerating forces and decelerating forces must... , oscillating fore-aft GRFs must sum to equal to body weight over a step to maintain...

449

acting in the South with the South  

E-Print Network [OSTI]

to the Southern countries. Midway into its 20112015 performance contract, the IRD is there fore strengthening its

450

WA_1995_018_OPTICAL_COATING_LABORATORY_INC_Waiver_of_Domesti...  

Broader source: Energy.gov (indexed) [DOE]

Publications WA1995019DONNELLYCORPORATIONWaiverofDomesticandFore.pdf WA1994034AIRPRODUCTSANDCHEMICALSINCWaiverofDomesti.pdf WA1995009AIRPRODUCTSANDCHEMICAL...

451

WA_02_028_TRANE_CO__Waiver_of_Domestic_and_Foreign_Rights_in...  

Broader source: Energy.gov (indexed) [DOE]

5YORKINTERNATIONALCORPORATIONWaiverofDomesti.pdf WA01034INGERSOLL-RANDENERGYSYSTEMSWaiverofDomestica.pdf WA01011HONEYWELLLABORATORIESWaiverofDomesticandFore...

452

Compression and accelerated rendering of volume data using discrete wavelet transform  

E-Print Network [OSTI]

Correct choice of Marching cubes cases depending on neighbour- ing cell. Choice of diagonal orientation msy result in bumps in Marching tetrahedra algorithm (single cube face shown). . Object order volume rendering. Casting a ray through a volume... the contour locations for each edge in the case table. The 3-D analogy of Marching squares is Marching cubes. Here there are 256 (i. e. 26 combinations) cases different combinations of scalar values, given that there are 8 points in a cubic-cell (or voxel...

Kamath, Preyas

2012-06-07T23:59:59.000Z

453

20130221WebCastLinks | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Ready Talk -- slides and audio. You will need to register to view these: Ready Talk -- slides and audio. You will need to register to view these: Biological and Environmental Research Advisory Committee (BERAC) BERAC Home Meetings BERAC Minutes BERAC Minutes Archive Members Charges/Reports Charter .pdf file (40KB) BER Committees of Visitors BER Home Meetings Ready Talk -- slides and audio. You will need to register to view these: Print Text Size: A A A RSS Feeds FeedbackShare Page BERAC Meeting February 21, 2013 - Session 1 - http://cc.readytalk.com/play?id=1bsrre External link BERAC Meeting February 21, 2013 - Session 2 - http://cc.readytalk.com/play?id=11ojq2 External link BERAC Meeting February 21, 2013 - Session 3 - http://cc.readytalk.com/play?id=5tm3ax External link (phone connection lost for about 20 minutes of BERAC charge discussion)

454

Low-Cost Magnesium Sheet Production using the Twin Roll Casting Process and Asymmetric Rolling  

Broader source: Energy.gov [DOE]

2012 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

455

Low-Cost Magnesium Sheet Production using the Twin Roll Casting Process and Asymmetric Rolling  

Broader source: Energy.gov [DOE]

2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

456

Interfacial thermal conductance in spun-cast polymer films and polymer brushes  

E-Print Network [OSTI]

represents the length of a material of thermal conduc- tivity providing an equivalent thermal resistance inorganic materials and anharmonic polymers have potentially intriguing thermal transport behavior. The low. This requirement proves challenging for low thermal conductivity materials like amorphous polymers. The effective

Braun, Paul

457

Continuous casting and inside rolling of round billets for seamless pipe. Final technical report  

SciTech Connect (OSTI)

An invention is described which relates to a patented process and to a motor driven mandrel apparatus (Patent No. 4,546,816) which has the property to roll without slip (or friction) or to roll with controlled friction on the inside surface of a non rotating hollow round. Each point on the circumferential surface of the mandrel describes a hypocycloidal curve or a curve with a hypocycloidal characteristic during the operation of the mandrel.

Schwarz, G.

1996-07-16T23:59:59.000Z

458

Flexible casting of modular self-aligning microfluidic assembly blocks Sean M. Langelier,a  

E-Print Network [OSTI]

realization that, for many would-be users of microfluidic tools, traditional clean-room microfabrication­15 aimed at the elimination of costly and time consuming clean-room lithography. To replace

Walter, Nils G.

459

National Metal Casting Research Institute final report. Volume 1, Sand reclamation  

SciTech Connect (OSTI)

A mobile thermal foundry sand reclamation unit was designed and constructed. This unit consisted of thermal and mechanical sand reclamation equipment installed on the bed of a 50 foot low-boy trailer. It was transported to a number of Midwest foundries for on-site demonstration of the sand reclamation process. This allowed participating foundries to have their own refuse sand (10-100 tons) processed and then reused in production for evaluation. The purpose for building the unit was to demonstrate to foundries through ``hands on`` experience that refuse sands can be reclaimed and successfully reused particularly in regard to product quality. Most of the participating foundries indicated a high level of satisfaction with the reclaimed sand. Laboratory testing of samples of the used sand, before and after processing by the demonstration unit, verified the usability of the reclaimed sand. One of the foundries participating was a brass foundry, the sand from this foundry contained lead and is classified as a hazardous material. After reclamation the sand was no longer hazardous and could also be reused in the foundry.

Vondra, L.F.; Burningham, J.S. [University of Northern Iowa, Cedar Falls, IA (United States). Dept. of Industrial Technology

1995-08-01T23:59:59.000Z

460

Freese-casting as a Novel Manufacturing Process for Fast Reactor Fuels  

SciTech Connect (OSTI)

Advanced burner reactors are designed to reduce the amount of long-lived radioactive isotopes that need to be disposed of as waste. The input feedstock for creating advanced fuel forms comes from either recycle of used light water reactor fuel or recycle of fuel from a fast burner reactor. Fuel for burner reqctors requires novel fuel types based on new materials and designs that can acieve higher performance requirements (higher burn up, higher power, and greator margins to fuel melting) then yet achieved. One promising strategy to improved fuel performance is the manufacture of metal or ceramic scaffolds which are designed to allow for a welldefined placement of the fuel into the host, and this in a manner that permits greater control than that possible in the production of typical CERMET fuels.

Wegst, Ulrike G.K.; Allen, Todd; Sridharan, Kumar

2014-04-07T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

A review of "The Ashgate Research Companion to Giorgio Vasari" edited by David Cast  

E-Print Network [OSTI]

)ódetermined Vasariís own. This question is central to the essays of Ann Huppert and Marjorie Och, who compare the two editions of the Vite as a means of inter- rogating Vasariís attitudes toward geographical place, here Siena and Venice respectively, within... significant and cautionary corrective. Ochís ďVenice and the Perfection of the Arts,Ē argues that Vasariís second trip to Venice resulted in deeper appreciation of Venetian art, especially its architec- ture, as reflected in the highly detailed biographies...

Pelta, Maureen

2014-01-01T23:59:59.000Z

462

Improving the Efficiency of Die Casting Machine Hydraulic Systems with the Retrofit of Adjustable Frequency Drives  

E-Print Network [OSTI]

because there is typically no way to limit the hydraulic capacity during periods of low demand. As a result, fluid is throttled to lower pressures and excess fluid flow is routed directly back to the system reservoir, wasting motor energy and increasing...

Ambs, L.; Kosanovic, D.; Edberg, C.

463

Diversity of Glycosyl Hydrolases from Cellulose-Depleting Communities Enriched from Casts of Two Earthworm Species  

Science Journals Connector (OSTI)

...metagenomic fosmid libraries from cellulose-depleting...annotated in public databases as...introducing myRDP space and quality controlled public data. Nucleic...metagenomic fosmid libraries from cellulose-depleting...annotated in public databases as...

Ana Beloqui; Taras Y. Nechitaylo; Nieves Lůpez-Cortťs; Azam Ghazi; MarŪa-Eugenia Guazzaroni; Julio Polaina; Axel W. Strittmatter; Oleg Reva; Agnes Waliczek; Michail M. Yakimov; Olga V. Golyshina; Manuel Ferrer; Peter N. Golyshin

2010-07-09T23:59:59.000Z

464

Connection of modular steel beam precast slab units with cast-in-place closure pour slabs  

E-Print Network [OSTI]

monolithic continuous deck. The effects of the cold joints and discontinuous steel details are the focus of the research work....

Brush, Natalie Camille

2005-02-17T23:59:59.000Z

465

[The formation of ordered microstructures by slip casting and related processes]. Progress report  

SciTech Connect (OSTI)

The existing three-year grant pertaining to ``The control of microstructures during consolidation and injection molding of colloidal dispersions`` began July 1, 1988 as a continuation of a previous grant. The overall effort seeks to answer fundamental questions relevant to the colloidal processing of submicron particles leading to ceramic materials for structural, electronic, or optical applications. At the outset two distinct projects were envisioned, an exploration of the ultrasonic enhancement of disorder-order transitions and a detailed study of injection molding of very dense dispersions, with each weighted toward experiments but with theoretical components. As the effort evolved the focus shifted in response to the interests of the students attracted to the project, the identification of interesting related problems through technical meetings, and different insights gained during participation in a DOE sponsored workshop. The scope that has emerged encompasses completion of research begun during the first grant period on disorder-order transitions occurring during sedimentation, the consolidation of flocculated dispersions via filtration, and the assembly of nanometer- sized particle into dense packings.

Not Available

1992-03-01T23:59:59.000Z

466

(The formation of ordered microstructures by slip casting and related processes)  

SciTech Connect (OSTI)

The existing three-year grant pertaining to The control of microstructures during consolidation and injection molding of colloidal dispersions'' began July 1, 1988 as a continuation of a previous grant. The overall effort seeks to answer fundamental questions relevant to the colloidal processing of submicron particles leading to ceramic materials for structural, electronic, or optical applications. At the outset two distinct projects were envisioned, an exploration of the ultrasonic enhancement of disorder-order transitions and a detailed study of injection molding of very dense dispersions, with each weighted toward experiments but with theoretical components. As the effort evolved the focus shifted in response to the interests of the students attracted to the project, the identification of interesting related problems through technical meetings, and different insights gained during participation in a DOE sponsored workshop. The scope that has emerged encompasses completion of research begun during the first grant period on disorder-order transitions occurring during sedimentation, the consolidation of flocculated dispersions via filtration, and the assembly of nanometer- sized particle into dense packings.

Not Available

1992-01-01T23:59:59.000Z

467

Book Reviews 167 ers may want Grausam to cast a wider net and consider alternative  

E-Print Network [OSTI]

Carole Bourne-Taylor andAriane Mildenberg,eds.Phenomenol- ogy, Modernism and Beyond. Oxford: Peter Lang

Oxford, University of

468

Construction and Preliminary HVS Tests of Pre-Cast Concrete Pavement Slabs  

E-Print Network [OSTI]

had a relatively high penetration rate of approximately 30200 mm depth, the penetration rate decreased to between 2subgrade. These low penetration rates, combined with the

Kohler, Erwin R.; du Plessis, Louw; Theyse, Hechter

2008-01-01T23:59:59.000Z

469

Phased Array Ultrasonic Sound Field Mapping in Cast Austenitic Stainless Steel  

SciTech Connect (OSTI)

This study maps the phased array-generated acoustic sound fields through three types of CASS microstructure in four specimens to quantitatively assess the beam formation effectiveness in these materials.

Crawford, Susan L.; Prowant, Matthew S.; Cinson, Anthony D.; Larche, Michael R.; Diaz, Aaron A.; Anderson, Michael T.

2014-05-31T23:59:59.000Z

470

SCANNING ELECTRON MICROSCOPY AND PORE CASTING: CHEROKEE AND BUG FIELDS, SAN JUAN COUNTY, UTAH  

SciTech Connect (OSTI)

Over 400 million barrels (64 million m{sup 3}) of oil have been produced from the shallow-shelf carbonate reservoirs in the Pennsylvanian (Desmoinesian) Paradox Formation in the Paradox Basin, Utah and Colorado. With the exception of the giant Greater Aneth field, the other 100 plus oil fields in the basin typically contain 2 to 10 million barrels (0.3-1.6 million m{sup 3}) of original oil in place. Most of these fields are characterized by high initial production rates followed by a very short productive life (primary), and hence premature abandonment. Only 15 to 25 percent of the original oil in place is recoverable during primary production from conventional vertical wells. An extensive and successful horizontal drilling program has been conducted in the giant Greater Aneth field. However, to date, only two horizontal wells have been drilled in small Ismay and Desert Creek fields. The results from these wells were disappointing due to poor understanding of the carbonate facies and diagenetic fabrics that create reservoir heterogeneity. These small fields, and similar fields in the basin, are at high risk of premature abandonment. At least 200 million barrels (31.8 million m{sup 3}) of oil will be left behind in these small fields because current development practices leave compartments of the heterogeneous reservoirs undrained. Through proper geological evaluation of the reservoirs, production may be increased by 20 to 50 percent through the drilling of low-cost single or multilateral horizontal legs from existing vertical development wells. In addition, horizontal drilling from existing wells minimizes surface disturbances and costs for field development, particularly in the environmentally sensitive areas of southeastern Utah and southwestern Colorado.

Thomas C. Chidsey Jr; David E. Eby; Louis H. Taylor

2003-12-01T23:59:59.000Z

471

Interactive Landscape Visualization Using GPU Ray Casting Stephan Mantler and Stefan Jeschke  

E-Print Network [OSTI]

World Wind" (http://worldwind.arc.nasa.gov/), "Autodesk Map 3D" (www.autodesk.de/map), "3DGeo" (http

472

Scenes of Abjection: Power, Sexuality and Caste in Modern Tamil Literature  

E-Print Network [OSTI]

The Sanskrit word vindu also means seed/semen], Iím artÖAhamBrahmasmi, Aham BrahmasmiÖ Male voice: You say youíre sound.

Keshavamurthy, Kiran

2012-01-01T23:59:59.000Z

473

E-Print Network 3.0 - arc cast lcac Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

in The Netherlands. Summary: al., 1981). For a set of constraints of the formlca(a, b) > lca(c, d), the algorithm in Aho et al... tree. The tree satisfies all triples except...

474

Experimental: Gel Electrolyte The gel mixtures were designed to be cast as  

E-Print Network [OSTI]

PEDOT:PSS as counter electrode, which demonstrated good Iodine regenerative catalytic activity .[2] www.risoe.dk/solarcells

475

Experimental studying on development of slurry-layer casting system for additive manufacturing of ceramics  

Science Journals Connector (OSTI)

Compared with powder-based process of additive manufacturing, slurry-based process can fabricate the ceramic ... the slurry with different formation used in the additive manufacturing of ceramic products, this st...

Hsiao Chuan Yen

2014-10-01T23:59:59.000Z

476

Investigation of an Investment Casting Method Combined with Additive Manufacturing Methods for Manufacturing Lattice Structures.  

E-Print Network [OSTI]

??Cellular metals exhibit combinations of mechanical, thermal and acoustic properties that provide opportunities for various implementations and applications; light weight aerospace and automobile structures, impactÖ (more)

Kodira, Ganapathy D.

2013-01-01T23:59:59.000Z

477

Laser surface hardening of gray cast iron used for piston ring  

Science Journals Connector (OSTI)

The process parameters for laser surface-hardening has been experimentally established for improving the wear life of piston rings used for marine diesel engines by the formation of a ... value, hardening depth, ...

Jong-Hyun Hwang; Dae-Young KimÖ

2002-06-01T23:59:59.000Z

478

Cast-Concrete Products Made with FBC Ash and Wet-Collected Coal-Ash  

E-Print Network [OSTI]

. DOI: 10.1061/ ASCE 0899-1561 2005 17:6 659 CE Database subject headings: Recycling; Ashes; Concrete et al. 1991 . Fluidized bed combustion FBC ash is the ash produced by an FBC boiler in which the coal

Wisconsin-Milwaukee, University of

479

Polyacryl prosthesis for cranioplastyóTheir production in silicon rubber casts  

Science Journals Connector (OSTI)

The frequently observed osteolysis after reimplantation of deepfrozen skullcap bone have led us to use polyacryl as the material of choice if a secondary covering of a skull bone defect becomes necessary. Poly...

F. Alesch; R. Bauer

1985-01-01T23:59:59.000Z

480

Grain refinement of cast niobium via equal channel angular extrusion/annealing  

E-Print Network [OSTI]

???????????????????????????????... 4 II LITERATURE REVIEW?????????????????????????.......... 6 A. Niobium Properties and Applications????????????????????? 6 B. Niobium Based Type II Superconductors?????????????????.......... 6 1. Bronze Method.... Average Grain Diameter and Standard Deviation of Panoramic Calculations?????? 148 1 CHAPTER I INTRODUCTION A. Motivation Type II superconductors typically come in the form of composite wires consisting...

Bryant, Don O.

2007-04-25T23:59:59.000Z

Note: This page contains sample records for the topic "fore cast ing" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Robotic design construction : digital fabrication strategies for freeform masonry casting and mobile assembly  

E-Print Network [OSTI]

The paradigm shift of digital fabrication encourages architects to incorporate the knowledge of using innovative materials and novel tools to solve problems in design and construction. However, the application of digital ...

Liu, Yuchen, S.M. Massachusetts Institute of Technology

2009-01-01T23:59:59.000Z

482

Field measurements of lateral earth pressures on a pre-cast panel retaining wall  

E-Print Network [OSTI]

Test Wall Description Instrumentation Installation of Pressure Cells and Transducers Backfilling Procedure Properties of the Backfill Material Placement of Clay Backfill DATA COLLECTION Earth Pressure Cell Measurements Force Transducer... Analysis of Backfill Material 2 Lateral Earth Pressures Measured by Pressure Cells (Psi) . . . . . . . . . . . - . ~ . ~ 3 Maximum Deviation From Zero Gage Reading and Temperature Relationship. . . . 4 Forces Measured by Force Transducers (Kips) 5...

Prescott, David Monroe

2012-06-07T23:59:59.000Z

483

ITP Steel: Hydrogen and Nitrogen Control in Ladle and Casting Operations  

Broader source: Energy.gov [DOE]

In recent years there has been an increasing demand to reduce and control the amount of dissolved gases in steel. Hydrogen and nitrogen are two of the most important gases which when dissolved in liquid steel affect its properties significantly

484

Molten metal holder furnace and casting system incorporating the molten metal holder furnace  

DOE Patents [OSTI]

A bottom heated holder furnace (12) for containing a supply of molten metal includes a storage vessel (30) having sidewalls (32) and a bottom wall (34) defining a molten metal receiving chamber (36). A furnace insulating layer (42) lines the molten metal receiving chamber (36). A thermally conductive heat exchanger block (54) is located at the bottom of the molten metal receiving chamber (36) for heating the supply of molten metal. The heat exchanger block (54) includes a bottom face (65), side faces (66), and a top face (67). The heat exchanger block (54) includes a plurality of electrical heaters (70) extending therein and projecting outward from at least one of the faces of the heat exchanger block (54), and further extending through the furnace insulating layer (42) and one of the sidewalls (32) of the storage vessel (30) for connection to a source of electrical power. A sealing layer (50) covers the bottom face (65) and side faces (66) of the heat exchanger block (54) such that the heat exchanger block (54) is substantially separated from contact with the furnace insulating layer (42).

Kinosz, Michael J. (Apollo, PA); Meyer, Thomas N. (Murrysville, PA)

2003-02-11T23:59:59.000Z

485

Quantification and characterization of regional seismic signals from cast blasting in mines: a linear elastic model  

Science Journals Connector (OSTI)

......detonalions that sometimes accompany standard blasting operations. The models...past signal character. We also plan to study the effects of imperfect...pulse with, xf.A thorough review by Michael Hedlin is also appreciated...explosions from simultaneous mining blasts, Bull. seism. Soc......

Sridhar Anandakrishnan; Steven R. Taylor; Brian W. Stump

1997-10-01T23:59:59.000Z

486

E-Print Network 3.0 - as-cast zr ti Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

page cl-733 Summary: par ajout de ZrOz(Y20,) e t de matdriaux monoxydes t e l s que Sic, Tic, TiN e t B4C. Un renforcement... 304 344 247 344 Composite A120,-ZrO,OY-TiN...

487

An evaluation of styrene levels emitted during cast polymer production of cultured marble building materials  

E-Print Network [OSTI]

clean, waxed mold. In order to catalyze the resin, MEKP is mixed with UPR directly in the spray gun. As a result of the spray operation, most styrene emissions are generated in the spray booth. Brooks et al. cite styrene exposure levels during gel... at the facility to clean the spray gun between spray runs. However, spectral scans of the ambient air both inside of the facility and outside of the facility did not detect interference from acetone at the 11. 0 and 13. 0 micrometer bands. The 11. 0 micrometer...

Bell, Lewis Ray

2012-06-07T23:59:59.000Z

488

An empirical system for the identification of smooth bore, cast iron cannon  

E-Print Network [OSTI]

standardized recording system and a method of manipulating recorded data whereby a corpus oF information on guns will be collected. Eventually, a cannon identification key will be produced from this corpus of information. Current tate of the iterature A..., calibre, weight of shot. Sometimes they provide a few extra details such as weight of gun, or length of bore. The rare illustration was generally not to scale. Such scanty descriptions are, today, insufficient to date a gun with accuracy. Twentieth...

Hoyt, Steven D

2012-06-07T23:59:59.000Z

489

AMD 405: Improved Automotive Suspension Components Cast with B206 Alloy  

Broader source: Energy.gov [DOE]

Presentation from the U.S. DOE Office of Vehicle Technologies "Mega" Merit Review 2008 on February 25, 2008 in Bethesda, Maryland.

490

AMD 405: Improved Automotive Suspension Components Cast with B206 Alloy  

Broader source: Energy.gov [DOE]

2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies Program Annual Merit Review and Peer Evaluation

491

Evaluation of residual stress gradients in ductile cast iron using critical refracted longitudinal (Lcr) wave technique  

E-Print Network [OSTI]

improper or unnecessary heat-treatments extremely costly. Knowledge of the residual stress ipudient can make production of the component much more efficient and economicaL This knowledge could also be used to predict service life of components...

Pfluger, Ron Atlan

1995-01-01T23:59:59.000Z

492

FISH FLIPS WITH CHIPS Casting about for something tasty and new  

E-Print Network [OSTI]

. Versatile seafoods are the answer-- and there is an abundant supply available at your seafood market or the frozen seafood counter at the supermarket. Fishery products come in a myriad of seafood styles to fit ev, and there are so many tasty ways to prepare them that one could serve this seafood style for weeks without re

493

E-Print Network 3.0 - aluminium casting alloy Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

mar 2007 agnesium is 36 per cent Summary: and Anwar Parvez analyse the importance of Magnesium-Aluminium- Strontium alloys for more fuel... components in automotive industry....

494

A comparison of the toughness of ductile iron to cast steel using modified charpy test specimens  

E-Print Network [OSTI]

parameters from Charpy V-notch results are desirable (. '12]. Rolfe and Barsom [1] suggest that one may correlate Klc with total Charpy fracture energy on the upper shelf using the relationship (Klc/YS) = A(CVN-YS/20)/YS (2) where K1c is the static...

McKinney, Keith Elison

2012-06-07T23:59:59.000Z

495

If a tree casts a shadow is it telling the time?  

E-Print Network [OSTI]

Physical processes are computations only when we use them to externalize thought. Computation is the performance of one or more fixed processes within a contingent environment. We reformulate the Church-Turing thesis so that it applies to programs rather than to computability. When suitably formulated agent-based computing in an open, multi-scalar environment represents the current consensus view of how we interact with the world. But we don't know how to formulate multi-scalar environments.

Russ Abbott

2006-03-30T23:59:59.000Z

496

Vehicle Technologies Office Merit Review 2014: Mechanistic-based Ductility Prediction for Complex Mg Castings  

Broader source: Energy.gov [DOE]

Presentation given by USAMP at 2014 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Office Annual Merit Review and Peer Evaluation Meeting about mechanistic-based ductility prediction...

497

Formability of Direct Cast Mg Sheet and Friction Stir and Ultrasonic...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Merit Review and Peer Evaluation Meeting, June 7-11, 2010 -- Washington D.C. lm011smith2010o.pdf More Documents & Publications Vehicle Technologies Office: 2010 Lightweight...

498

ITP Metal Casting: Theoretical/Best Practice Energy Use in Metalcastin...  

Broader source: Energy.gov (indexed) [DOE]

TheoreticalBest Practice Energy Use In Metalcasting Operations J. F. Schifo J.T. Radia KERAMIDA Environmental, Inc. Indianapolis, IN May 2004 Prepared under Contract to Advanced...

499

Refinement of the Cast Microstructure of Hypereutectic Aluminum-Silicon Alloys with an Applied Electric Potential.  

E-Print Network [OSTI]

??Hypereutectic aluminum-silicon (Al-Si) alloys are widely used in the aerospace and automobile industries because of their low density, excellent wear and corrosion resistance, low coefficientÖ (more)

Plotkowski, Alexander Joseph

2012-01-01T23:59:59.000Z

500

High-latitude eruptions cast shadow over the African monsoon and the flow of the Nile  

E-Print Network [OSTI]

the Sahel of Africa, thus producing the low Nile flow. Future high-latitude eruptions would significantly, p. 120]. By January 1785, 1/6 of the population of Egypt had either died or left the country of Asia and North America. Recon- structed summer temperatures using tree ring maximum latewood density

Stenchikov, Georgiy L.