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首页> 外文期刊>International Journal of Pressure Vessels and Piping >Statistical analysis of fatigue crack growth for 16MnR steel under constant amplitude loads
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Statistical analysis of fatigue crack growth for 16MnR steel under constant amplitude loads

机译：等幅载荷下16MnR钢疲劳裂纹扩展的统计分析

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摘要

A statistical investigation of the fatigue crack propagation process has been carried out. Twenty-one pre-cracked specimens obtained from the same sheet of Chinese steel 16MnR were subjected to identical load and environmental conditions. Testswere conducted under constant amplitude loads in order to study the effect of material property randomness. From the experimental data, the distribution of the crack size at any given number of cumulative load cycles, or the distribution of the number ofload cycles to reach any given crack size, is determined. The statistical distribution of the crack growth rate at any given number of load cycles or at any given crack size is also discussed. The statistical investigation methods of the fatigue crackpropagation process, proposed by this article, were also found to be suitable for other materials.
机译：对疲劳裂纹扩展过程进行了统计研究。从同一张中国16MnR钢板获得的21个预破裂试样在相同的载荷和环境条件下经受了测试。为了研究材料特性随机性的影响，在恒定振幅载荷下进行了测试。根据实验数据，可以确定任意给定数量的累积载荷循环下的裂纹尺寸分布，或达到任意给定裂纹尺寸的载荷循环数的分布。还讨论了在任意给定数量的载荷循环或任意给定的裂纹尺寸下裂纹扩展率的统计分布。本文提出的疲劳裂纹扩展过程的统计调查方法也被发现适用于其他材料。

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