Effect of specimen thickness on the probability distribution of fatigue crack growth lives

机译：试件厚度对疲劳裂纹扩展寿命概率分布的影响

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The evaluation of specimen thickness effect of fatigue crack growth life by the simulation of probabilistic fatigue crack growth is presented. In this paper, the material resistance to fatigue crack growth is treated as a spatial stochastic process, which varies randomly on the crack surface. Using the previous experimental data, the non-Gaussian (eventually Weibull, in this report) random fields simulation method is applied. This method is useful to estimate the probability distribution of fatigue crack growth life and the variability due to specimen thickness by simulating material resistance to fatigue crack growth along a crack path.

机译：通过对概率疲劳裂纹扩展的模拟，评估了疲劳裂纹扩展寿命的试样厚度效应。在本文中，材料对疲劳裂纹扩展的抵抗力被视为空间随机过程，该过程在裂纹表面随机变化。使用先前的实验数据，应用了非高斯（最终是本报告中的威布尔）随机场模拟方法。通过模拟材料对沿裂纹路径的疲劳裂纹扩展的抵抗力，该方法可用于评估疲劳裂纹扩展寿命的概率分布和试样厚度导致的变异性。

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《International Conference on Structural Integrity and Fracture, SIF 2002, Sep 25-27, 2002, Perth, Australia》|2002年|p.161-166|共6页
会议地点 Perth(AU);Perth(AU)
作者
S.J. Kim; Y.S. Kim; H.C. Jeong;
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作者单位

School of Mechanical Engineering, Pukyong National University, Busan, Korea;

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原文格式 PDF
正文语种 eng
中图分类一般工业技术;
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Effect of specimen thickness on the probability distribution of fatigue crack growth lives

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