繊維強化セラミックス基複合材料の界面特性と破壊靭性との関係

概要

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Enhancement of fracture toughness increment by fiber bridging in fiber-reinforced composites was theoretically predicted in the case of small scale bridging conditions. This calculation was based on the stress field analysis of fiber pull-out which takes account of the interfacial bond, interfacial residual clamping stress and the Poisson's contraction of fibers induced by applied tensile loads. Fracture toughness tests of unidirectionally SiC fiber-reinforced glass composites were also performed. The fracture toughness increment observed in the experiment was in good agreement with the present theoretical prediction. The optimum interfacial properties to maximize the fracture toughness in steady-state as well as the relationship between the interfacial debonding behavior and fracture toughness were addressed.
社団法人日本セラミックス協会の論文
1992-08-01