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采用耐久性分析方法 ,由断口金相数据得到参考裂纹扩展时间 (TTCI)的概率分布函数 ,由 TTCI概率分布函数和约束条件得到了通用当量初始缺陷尺寸 (EIFS)的概率分布函数。
The probability distribution function of reference crack growth time (TTCI) was obtained from fracture surface metallographic data by means of durability analysis. The probability distribution function of general equivalence initial defect size (EIFS) was obtained from TTCI probability distribution function and constraint condition.