A probabilistic model for estimating the fatigue life of composite laminates based on the mean value and standard deviation of the fatigue life is introduced here for predicting the distribution of fatigue life at any stress level for a constant stress ratio. The proposed model is validated with experimental data for several composite materials, and its accuracy is evaluated by goodness-of-fit-statistical tests. The proposed second-order polynomial model can be used to develop probabilistic constant life diagrams and probabilistic S-N curves for any stress ratio which are corroborated well by available experimental data.

中文翻译：

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基于失效循环统计特征的复合材料概率疲劳模型

本文介绍了一种基于疲劳寿命平均值和标准差的复合材料层合板疲劳寿命概率模型，用于预测恒定应力比下任意应力水平下的疲劳寿命分布。所提出的模型通过几种复合材料的实验数据进行了验证，并通过拟合优度统计测试评估了其准确性。所提出的二阶多项式模型可用于开发任何应力比的概率常数寿命图和概率 SN 曲线，可用实验数据很好地证实了这一点。