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首页> 外文期刊>Journal of engineering materials and technology >Mixed-Mode Fatigue Crack Growth in Stainless Steels Under Biaxial Loading
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Mixed-Mode Fatigue Crack Growth in Stainless Steels Under Biaxial Loading

机译：双轴载荷下不锈钢的混合模式疲劳裂纹扩展

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摘要

Mixed-Mode fatigue crack propagation tests were carried out in stainless-steel cruciform specimens in which a center initial crack oriented at 45 deg was loaded biaxially. When the loadings were in-phase, the crack was deflected with the initial crack growth angles less than 50 deg and when they were out-of-phase, it was branched with the initial crack growth angles larger than 50 deg. In all the cases, the deflected or branched cracks propagated in Mode Ⅰ, namely ΔK_Ⅱ was almost always zero along the crack paths. The relationship between deflected or branched cracks during propagation was also analyzed.
机译：在不锈钢十字形试样中进行了混合模式疲劳裂纹扩展测试，在该试样中，双轴加载了取向为45度的中心初始裂纹。当载荷同相时，裂纹以初始裂纹扩展角小于50度偏转，而当载荷异相时，裂纹以初始裂纹扩展角大于50度分支。在所有情况下，挠曲或分支裂纹都以模式Ⅰ传播，即沿裂纹路径的ΔK_Ⅱ几乎总是零。还分析了扩展过程中挠曲或分支裂纹之间的关系。

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