2317 3D-C/C複合材のせん断特性および繊維束界面特性評価(S32-1 セラミックスおよびセラミックス系複合材料(1),S32 セラミックスおよびセラミックス系複合材料)

概要

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Relationships between shear behavior and fiber bundle inter facial properties of three-dimensionally reinforced carbon/carbon composites (3D-C/Cs) were examined from room temperature to elevated temperatures. The 3D-C/Cs exhibited a significant shear non-linearity and shear strength increased monotonically with increasing test temperature, T. According to damage observation results, the shear non-linearity was found to be attributed to the debonding and sliding at fiber bundle interfaces. This result indicates that shear behavior of the 3D-C/C is highly related to damage at fiber bundle interfaces. To clarify the mechanisms yielding the shear strength improvement at elevated temperatures, fiber bundle pushout tests were conducted up to 2273K. Similarly to shear strength, fiber bundle interfacial strength τ^i_<max> increased with increasing T.
社団法人日本機械学会の論文
2005-09-18