中密度穿刺C/C复合材料室温拉伸强度分布研究

Preparation and mechanical properties of finely braided and punctured C/C-SiC composite bolted joints

本文针对中密度(1.85 g/cm^(3))C/C复合材料室温拉伸强度实验数据,以二参数Weibull分布为假设分布模型,采用图解法进行参数估计,探讨该复合材料室温拉伸强度分布规律,根据Kolmogorov分参数检验,对假设分布进行检验.结果表明:C/C复合材料室温拉伸强度可以用二参数Weibull分布模型表征,求解的二参数Weibull分布能很好地预测该材料的室温拉伸强度.

This article focuses on the experimental data of room temperature tensile strength of C/C composite materials with a medium density(1.85g/cm^(3)).The two parameter Weibull distribution is used as the assumed distribution model,and the graphical method is used for parameter estimation to explore the distribution law of room temperature tensile strength of the composite material.Based on the Kolmogorov sub parameter test,the assumed distribution is tested.The results indicate that the room temperature tensile strength of C/C composites can be characterized by a two parameter Weibull distribution model,and the solved two parameter Weibull distribution can effectively predict the room temperature tensile strength of the material.