Particle velocity and stress gage measurements in spherical diverging flow

Conference · Sun Mar 01 00:00:00 EST 1987

OSTI ID:6247791

Larson, D B; Stout, R B

Chemical explosions were used to generate spherically diverging stress waves in polymethylmethacrylate (PMMA). Piezoresistance gages of several different designs were placed in the PMMA radially from the spherical energy source. Two basic types of piezoresistance gages were used. One type was placed on backing material and then glued directly to the PMMA while the other type was placed on backing material and then enclosed in a fluid cavity which was attached to the PMMA. Gages were oriented normal to the direction of the shock front. In order to interpret the piezoresistance gage measurements and to obtain a complete set of data for numerical calculations, particle velocity was also measured at several radial positions from the explosion. In addition to different ytterbium gage designs, a triple material gage that contained ytterbium, manganin, and constant an foils was tested. This gage provided three independent resistivity history signals as output, one from each material. Results from an analysis of piezoresistance gage response in a multicomponent stress-strain field compared well with the experimental measurements for the triple material gage. 23 refs., 18 figs., 4 tabs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6247791
• Report Number(s): UCRL-96320; CONF-870637-4; ON: DE87007333
• Resource Relation: Conference: Summer meeting of the American Society of Mechanical Engineers, Cincinnati, OH, USA, 14 Jun 1987; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
42 ENGINEERING
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
ACRYLATES
STRAINS
STRESSES
CHEMICAL EXPLOSIONS
MEASURING INSTRUMENTS
COMPARATIVE EVALUATIONS
DESIGN
CALIBRATION
CONSTANTAN
ELECTRIC CONDUCTIVITY
EXPERIMENT PLANNING
EXPERIMENTAL DATA
MANGANIN
PIEZOELECTRICITY
PIEZOMETRY
YTTERBIUM
ALLOYS
CARBOXYLIC ACID SALTS
COPPER ALLOYS
COPPER BASE ALLOYS
DATA
ELECTRICAL PROPERTIES
ELECTRICITY
ELEMENTS
EXPLOSIONS
INFORMATION
MANGANESE ALLOYS
METALS
NICKEL ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
PLANNING
RARE EARTHS
440300* - Miscellaneous Instruments- (-1989)
420800 - Engineering- Electronic Circuits & Devices- (-1989)
450100 - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives