Abstract The fundamental aspects of fatigue fracture mechanisms (crack onset and propagation) in riveted single lap joints of fiber-metal laminate have been disclosed through extensive failure analysis of double-riveted 2/1 Glare™ laminate layup. Three fatigue fracture mechanisms, namely, rivet fracture, Glare laminate cracking and fretting-fatigue have been determined as function of the peak stress. The roles of the joint elements and fiber-metal laminate constituents on the fatigue strength have been determined. Aligned riveting has shown more fatigue resistant than non-aligned rivets due to its higher restriction to secondary bending moments, so that potential fracture mechanisms were postponed and/or prevented. It has been discovery that, more than damage tolerance, the damage resistance capability of the joint determines its fatigue and quasi-static strengths. The obtained results can provide insights in designing complex riveted Glare joints with superior fatigue and quasi-static in-service performance.

中文翻译：

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铆接纤维-金属层压板搭接接头疲劳失效分析

摘要 通过对双铆接 2/1 Glare™ 层压板叠层的广泛失效分析，揭示了纤维-金属层压板铆接单搭接接头疲劳断裂机制（裂纹开始和扩展）的基本方面。三种疲劳断裂机制，即铆钉断裂、眩光层压板开裂和微动疲劳已被确定为峰值应力的函数。已经确定了接头元件和纤维-金属层压板成分对疲劳强度的作用。对齐铆钉比非对齐铆钉表现出更高的抗疲劳性，因为它对二次弯矩的限制更高，因此可以推迟和/或防止潜在的断裂机制。已经发现，不仅仅是损伤容限，接头的抗损伤能力决定了其疲劳强度和准静态强度。获得的结果可以为设计具有卓越疲劳和准静态服役性能的复杂铆接眩光接头提供见解。