936 金属含浸 C/C 複合材の引張疲労に関する研究

概要

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An experimental investigation is conducted on the tensile fatigue behavior of C/C and metal impregnated C/C composites such as Cu-C/C and Si-C/C. From the results of tensile-tensile fatigue tests, S-N curves of these materials were obtained and the fracture mechanism of these materials was discussed. It has been observed that the fatigue strength of metal impregnated C/C composites is about 80% of the ultimate tensile strength and that the difference of failure mechanism between C/C, Cu-C/C and Si-C/C is related to their interlaminar shear strength (ILSS). In C/C and Cu-C/C cases, because of their low ILSS, failure of these composites is mainly due to delamination. On the other hand, in a Si-C/C case, the Si-C became a strong interface layer and the local brittle fracture near and at the interface was occurred.
一般社団法人日本機械学会の論文
2003-08-05