摘要
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 a- t data from fracture surface are analysed by an equation of crack growth rate that is often used in durability.Weibull distribution is used to describe the distribution of reference crack initia- tion time.Equivalent initial faults sizes distribution characterizing a group of specimens with the same con- figuration under spectrum loading is finished.From the results,the TTCI distribution probabilities about different stress levels and crack lengths could be obtained.
出处
《材料工程》
EI
CAS
CSCD
北大核心
1997年第5期6-8,共3页
Journal of Materials Engineering
关键词
裂纹形成时间
初始缺陷尺寸
钢
疲劳裂纹
reference crack initiation time ( TTCI) equivalent initial faults size ( EIFS)
