OS1521 平織CFRP擬似等方積層板の非相似型等寿命線図とその温度依存性のモデル化(OS15-4 複合材料の変形と強度,OS-15 微視構造を有する材料の変形と破壊)

概要

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A procedure for constructing the anisomorphic constant fatigue life (CFL) diagram for composites on the basis of the static strengths in tension and compression and the reference S-N relationship for the critical stress ratio, which was developed in an earlier study, is further tested on a woven CFRP quasi-isotropic laminate at room and high temperatures. Constant amplitude fatigue tests were first performed at RT, 100 and 150℃ for different stress ratios to elucidate the effects of R-ratio and temperature on S-N relationship. Then, validity of the anisomorphic CFL diagram approach to prediction of the fatigue lives of the composite for cyclic loading at different stress ratios and test temperatures is evaluated by comparing the predicted and experimental results.
2011-07-16