Kinetics and microscopic processes of long-term fracture in polyethylene-piping materials. Annual report, February 1, 1989-February 1, 1990
Technical Report
·
OSTI ID:6253761
Contents: notchology--the effect of the notching method on the slow crack growth failure in tough polyethylene; the effect of molecular weight on the fatigue behavior of high density polyethylene; the transition from ductile to slow crack growth failure in a copolymer of polyethylene; the ductile-brittle transition in a polyethylene copolymer; a unification of ductile failure and slow crack growth in an ethylene-octene copolymer; the dependence of butyl branch density on slow crack growth in polyethylene-kinetics; slow crack growth under fatigue and constant stress for ethylene-hexene resins with different density of branches; correlation of the fatigue test and the constant load slow crack growth test; relationship between slow crack growth and morphological change in ethylene-hexene copolymers; morphological changes on annealing in hdpe and mdpe and their effect on slow crack growth; ranking of pe gas pipe resins in air and igepal; brittle fracture of pe at low temperature; butt fusion welding.
- Research Organization:
- Pennsylvania Univ., Philadelphia, PA (United States). Dept. of Materials Science and Engineering
- OSTI ID:
- 6253761
- Report Number(s):
- PB-91-242438/XAB; CNN: GRI-5087-260-1468
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
032000 -- Natural Gas-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ANNEALING
COPOLYMERS
CRACK PROPAGATION
CRACKS
CRYSTAL STRUCTURE
DENSITY
DUCTILE-BRITTLE TRANSITIONS
ENERGY SOURCES
ENERGY SYSTEMS
FABRICATION
FATIGUE
FLUIDS
FOSSIL FUELS
FRACTURE MECHANICS
FRACTURE PROPERTIES
FUEL GAS
FUELS
GAS FUELS
GASES
HEAT TREATMENTS
JOINING
KINETICS
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MECHANICS
MICROSTRUCTURE
MOLECULAR WEIGHT
MORPHOLOGICAL CHANGES
MORPHOLOGY
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PIPES
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
REACTION KINETICS
SYNTHETIC MATERIALS
TESTING
TIME DEPENDENCE
WELDING
032000 -- Natural Gas-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ANNEALING
COPOLYMERS
CRACK PROPAGATION
CRACKS
CRYSTAL STRUCTURE
DENSITY
DUCTILE-BRITTLE TRANSITIONS
ENERGY SOURCES
ENERGY SYSTEMS
FABRICATION
FATIGUE
FLUIDS
FOSSIL FUELS
FRACTURE MECHANICS
FRACTURE PROPERTIES
FUEL GAS
FUELS
GAS FUELS
GASES
HEAT TREATMENTS
JOINING
KINETICS
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
MECHANICS
MICROSTRUCTURE
MOLECULAR WEIGHT
MORPHOLOGICAL CHANGES
MORPHOLOGY
NATURAL GAS
NATURAL GAS DISTRIBUTION SYSTEMS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PIPES
PLASTICS
POLYETHYLENES
POLYMERS
POLYOLEFINS
REACTION KINETICS
SYNTHETIC MATERIALS
TESTING
TIME DEPENDENCE
WELDING