In this paper, the fatigue properties of the plain weave composite subjected to broadband random loading are investigated. A prediction method is proposed to calculate the failure probability of the composite under random loading by combining the probability density function of the residual strength and the probability density function of the stress peaks. The stress randomness and the strength dispersity are both taken into account in the analysis of the residual strength and the failure probability curves. The fatigue life data of the plain weave composite under broadband random responses are obtained from the random vibration tests. The predicted results are in good agreement with the experiments.

中文翻译：

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宽带随机载荷下平纹复合材料疲劳性能的预测

本文研究了宽带随机载荷作用下的平纹复合材料的疲劳性能。提出了一种预测方法，通过结合残余强度的概率密度函数和应力峰值的概率密度函数来计算复合材料在随机荷载下的破坏概率。在分析残余强度和破坏概率曲线时，都考虑了应力随机性和强度分散性。从随机振动试验中获得了宽带随机响应条件下的平纹复合材料的疲劳寿命数据。预测结果与实验吻合良好。