Environmental effects on mechanical properties of a Kevlar 49/epoxy composite

Technical Report · Tue Jan 01 04:00:00 EST 1980

OSTI ID:6506963

Hahn, H T; Chin, W K

The purpose of this program was to determine the mechanical properties of a Kevlar 49/epoxy composite in a simulated flywheel service environment. The composite was filament-wound using an epoxy formulated at Lawrence Livermore National Laboratory (LLNL). The temperature and vacuum chosen were 75/sup 0/C and approx. 7 x 10/sup -3/ torr, respectively. Specimens were preconditioned in the test environment for periods of 1 to 5 months before mechanical tests. The simulated service environment of 75/sup 0/C in vacuum was found to have little effect on static and fatigue properties. While the elevated temperature of 75/sup 0/C was not deleterious, the lack of air could be beneficial because it eliminates the possibility of oxidation. Thus, the elevated temperature of 75/sup 0/C is no deterrent to the application of the present Kevlar 49/epoxy in flywheels.

• Research Organization: Washington Univ., St. Louis, MO (USA). Materials Research Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6506963
• Report Number(s): UCRL-15330
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250500* -- Energy Storage-- Flywheels
36 MATERIALS SCIENCE
360303 -- Composite Materials-- Mechanical Properties-- (-1987)
COMPOSITE MATERIALS
DATA
EPOXIDES
EXPERIMENTAL DATA
FAILURES
FATIGUE
FLYWHEELS
INFORMATION
MATERIALS
MATERIALS TESTING
MECHANICAL ENERGY STORAGE EQUIPMENT
MECHANICAL PROPERTIES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PRESSURE DEPENDENCE
SHEAR PROPERTIES
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TESTING