Materials program for fiber composite flywheels
Conference
·
OSTI ID:6524635
The fiber composite materials program for flywheels is divided into the following areas: matrix resins, static engineering properties, stress rupture (lifetime tests at constant load), and dynamic fatigue. During the past year, a rubberized epoxy resin that offers improved fracture toughness and suitable performance at moderately elevated temperatures (up to 70/sup 0/C) was characterized. Six epoxy resins for service at 150/sup 0/C were evaluated. In addition, the rubberized epoxy resin was used as a matrix in Kevlar 49 composites and engineering design data were generated. Stress rupture tests were initiated on E-glass composites at load levels of 60 to 85% of short-term strength; these tests will continue for several years. Dynamic fatigue tests on Kevlar 49 composites in the tension-tension mode were begun. In addition, fatigue tests on a Kevlar 49 composite ring specimen at 50 to 75% ultimate strength are in progress. These data will provide a direct estimate of flywheel performance.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6524635
- Report Number(s):
- UCRL-81724; CONF-781046-9
- Country of Publication:
- United States
- Language:
- English
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