1720 長繊維強化複合材料における応力伝達長さの時間的発展のラマン分光法による評価

概要

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The time-dependent evolution of stress transfer length in unidirectional fibrous composites was studied experimentally using microscopic Raman spectroscopy. Model composites of single carbon fiber embedded in uv-curable acrylic, was employed and relaxed at the same overall strain of 0.7% as the former experiment performed with epoxy resin matrix for 500 hours. It was observed that carbon fiber/acrylic composite exhibited significant and continuous changes of fiber stress profiles along the stress transfer length with time in comparison with those in epoxy matrix composites. These observation was shown to be consistent with result of the matrix stress relaxation. The change of fiber stress profiles was much slower than the stress relaxation of the matrices.
社団法人日本機械学会の論文
2000-07-31