3D C/SiC复合材料基体裂纹间距分布规律  

The matrix crack spacing distribution of 3D C/SiC composites

作　　者：张钧[1] 徐永东[1] 张立同[1] 成来飞[1] 董宁[1] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072

出　　处：《航空材料学报》2003年第3期11-14,共4页Journal of Aeronautical Materials

摘　　要：采用X2拟合优度检验方法对不同界面层厚度的3D C/SiC复合材料基体中裂纹分布进行了研究,结果表明,3D C/SiC复合材料纤维束间基体裂纹间距服从正态分布,而且这种分布是由3D复合材料的编织方式决定的.Cracks are inevitably brought in matrix since the CTE mismatch between carbon fiber and SiC matrix during the manufacture of C/SiC composites. In this paper, the distribution of matrix cracks in 3D C/SiC composites with different thickness interphase is studied by x2 goodness of fittest, and it is showed that the matrix crack spacing between tows in 3D C/SiC composites obey normal distribution which is determined by the basketry of 3D composites.

关 键 词：C/SIC复合材料 裂纹间距 分布规律 三维复合材料 正态分布 航空发动机 

分 类 号：V258[一般工业技术—材料科学与工程] V23[航空宇航科学与技术—航空宇航制造工程]