Abstract This paper is a continuation of previously published work. It presents the results of small cracks observation on the surfaces of fatigued specimens subjected to multiaxial loadings. Specimens were manufactured from four materials: PA38-T6 aluminum alloy, E235 and E355 non-alloy steels, and X5CrNi18-10 austenitic steel. Based on the cracking analysis, it was found that the aluminum alloy and low-alloy steels exhibited shear damage mechanism, while the austenitic steel showed the tensile damage mechanism. Fatigue life prediction was performed based on six popular damage parameters. A correlation between the observed damage mechanism and the fatigue life prediction quality was noted.

中文翻译：

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异步加载下四种金属材料的疲劳：细小裂纹观察与疲劳寿命预测

摘要 本文是先前发表的工作的延续。它给出了在承受多轴载荷的疲劳试样表面上观察小裂纹的结果。试样由四种材料制成：PA38-T6 铝合金、E235 和 E355 非合金钢以及 X5CrNi18-10 奥氏体钢。通过裂纹分析发现，铝合金和低合金钢表现出剪切损伤机制，而奥氏体钢表现出拉伸损伤机制。疲劳寿命预测是基于六个流行的损伤参数进行的。注意到观察到的损伤机制和疲劳寿命预测质量之间的相关性。