S0420201 CFRPの炭化過程における亀裂密度予測と亀裂形態に寄与する材料構成の評価([S042-02]セラミックスおよびセラミックス系複合材料(2),機械材料・材料加工部門)

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  • S0420201 Prediction of the Crack Density in Carbonization Process of CFRP and Evaluation of Microstructures Contributing Crack Morphology

抄録

Ceramics Matrix Composites (CMCs) like C/SiC are applied for a wide variety of industries because of their high wear resistance and high mechanical stability at high temperatures. Properties of CMCs strongly depend on their initial crack density in CFRP, which is a precursor of CMCs, arising in the carbonization process. Therefore, predicting the crack density in the CFRP makes it possible to control and design CMCs. In this study, a crack prediction model for transverse cracks and delamination using variational method under mechanical load was extended to prediction of crack density in the carbonization process, and validity of model was compared with experimental results. The comparison conclusively resulted in good agreement between calculations and experiments. Using the model, microstructures that contribute to crack density was investigated by changing thickness of the lamina and fiber volume fraction. It was found that thin ply thickness and high volume fraction make the initiation stress for cracking higher.

収録刊行物

  • 年次大会

    年次大会 2014 (0), _S0420201--_S0420201-, 2014

    一般社団法人 日本機械学会

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