Abstract Fretting fatigue is a combination of fatigue and micro-sliding due to fretting. The aim of the present work is to estimate crack initiation direction, endurance strength and lifetime of aluminium 7050-T7451 alloy specimens. The experimental campaign examined is devoted to investigate the role of the mean bulk stress on fretting fatigue behaviour. The above estimations are performed by using the Carpinteri et al. criterion for fretting fatigue. In such a context, the accuracy of the criterion is verified.

中文翻译：

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7050-T7451 铝合金的微动疲劳：整体平均应力的影响

摘要 微动疲劳是由微动引起的疲劳和微滑动的结合。目前工作的目的是估计铝 7050-T7451 合金试样的裂纹萌生方向、耐久强度和寿命。检查的实验活动致力于研究平均体积应力对微动疲劳行为的作用。上述估计是通过使用 Carpinteri 等人进行的。微动疲劳的判据。在这种情况下，验证标准的准确性。