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U.S. Department of Energy
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Some interesting mechanical behaviors of fiber composite materials

Conference ·
OSTI ID:6489147
In the course of studies of the mechanical behaviors of aramid/epoxy and the high-strength S2-glass/epoxy composites, two interesting but puzzling behaviors were observed. First, when a sustained tensile load is removed any time before stress-rupture failure, the composites retain almost their full original strengths. Second, the contribution of a high-elongation, low-modulus matrix to the performance of a simple glass composite seems to be surprisingly little. These results have raised questions about the validity of the strength retention test as well as the usefulness of a low-modulus matrix in fiber composites.
Research Organization:
California Univ., Livermore (USA). Lawrence Livermore Lab.
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
6489147
Report Number(s):
UCRL-80908; CONF-780916-3
Country of Publication:
United States
Language:
English