Mechanical properties of a filament-wound aramid fiber/epoxy composite for flywheel application

Technical Report · Mon Feb 01 04:00:00 EST 1982

OSTI ID:5321392

Hahn, H T; Chin, W K

The purpose of this program was to determine the mechanical properties of a filament-wound Kevlar 49/epoxy composite in a simulated flywheel service environment. The temperature and vacuum chosen were 75/sup 0/C and 1 Pa, 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 has been found to have little effect on static and fatigue properties of the composite. The excellent retention of strength by individual fibers in the same environment provides added confidence. The composite is stable for a period of two years studied so far in the 75/sup 0/C/vacuum environment. However, the moisture desorption increases residual sresses and causes ply cracking in laminates. The composite is less sensitive to the environment than the fibers and the matrix by themselves. 53 figures, 11 tables.

• Research Organization: Lawrence Livermore National Lab., CA (USA); Washington Univ., St. Louis, MO (USA). Materials Research Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5321392
• Report Number(s): UCRL-15461; ON: DE82015845
• 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)
ARAMIDS
COMPOSITE MATERIALS
DATA
EPOXIDES
EXPERIMENTAL DATA
FAILURES
FATIGUE
FIBERS
FILAMENTS
FLYWHEELS
INFORMATION
MATERIALS
MECHANICAL ENERGY STORAGE EQUIPMENT
MECHANICAL PROPERTIES
MOISTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
SIMULATION
STABILITY
SYNTHETIC MATERIALS
TENSILE PROPERTIES