短繊維分散強化複合材料中の繊維のはく離および引抜けに関する確率論的研究

概要

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A better understanding of the debond and pull-out processes of fibers in fiber-reinforced composites is needed because they affect the fracture toughness of the composites. In this paper, a new stochastic model is proposed to predict the probability distributions of debond and pull-out lengths of fibers in a short-fiber-reinforced SMC composite. By considering that fibers in a short-fiber-reinforced SMC composite are discontinuous and that their dircection is random, the probability distributions of debond and pull-out lengths are predicted. It is found that the debond length becomes shorter and the pull-out length becomes longer than those in unidirectional continuous-fiber-reinforced composites. Furthermore, the influences of the fiber-matrix interfacial condition on the debond and pull-out lengths are clarified.
一般社団法人日本機械学会の論文
1991-02-25