Failure mechanism of aluminium – carbon fibre reinforced polymer interlocking joints through punching

Q1 Engineering
Núria Latorre , Norbert Blanco , Daniel Casellas , Josep Costa
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引用次数: 0

Abstract

Single-Step Punch Interlocking (SSPI) is a recently developed joining methodology between aluminium and Carbon Fibre Reinforced Polymer (CFRP) aiming to contribute to multi-material design of structural parts. This hybrid joint technology combines adhesive bonding with mechanical interlocking. Elucidating the failure mechanism of the developed joint is relevant to provide insights for future enhancements in performance, increase its lifespan and prevent premature failure. Therefore, the different subcritical failure events were identified through interrupted Single-Lap Shear (SLS) tests and subsequent non-destructive ultrasonic inspection, and the global failure mechanism was described. Results indicate that the addition of the SSPI joint delayed the onset and propagation of adhesive failure between both substrates, providing residual strength and increasing the ultimate load in a 65 % and the absorbed energy of the joint in a 156 %.
铝碳纤维增强聚合物联锁接头冲孔破坏机理
单步冲孔联锁(SSPI)是最近发展起来的一种铝与碳纤维增强聚合物(CFRP)之间的连接方法,旨在为结构件的多材料设计做出贡献。这种混合连接技术结合了粘合和机械联锁。阐明已开发的关节的失效机制有助于为未来性能的增强、延长其使用寿命和防止过早失效提供见解。因此,通过中断单圈剪切(SLS)试验和随后的无损超声检测,确定了不同的亚临界破坏事件,并描述了整体破坏机制。结果表明,SSPI接头的加入延迟了两种基材之间粘合破坏的发生和传播,提供了65%的残余强度和增加了65%的极限载荷,增加了156%的接头吸收能量。
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来源期刊
International Journal of Lightweight Materials and Manufacture
International Journal of Lightweight Materials and Manufacture Engineering-Industrial and Manufacturing Engineering
CiteScore
9.90
自引率
0.00%
发文量
52
审稿时长
48 days
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