Abstract The new technique of pre-holed self-piercing riveting (PH-SPR) was proposed to improve the dissimilar joining of the carbon fibre reinforced polymer (CFRP) laminate and the commercially pure titanium (TA1) sheet. The joint quality, strength, failure behaviour and forming structure of the PH-SPR joints were analysed comparing with the regular SPR (R-SPR) joints. The effects of process parameters on the PH-SPR joint were discussed systematically and experimentally. It was concluded that a better mechanical interlock could be obtained using PH-SPR. The joint strength of the PH-SPR joints failed in the rivet pulled out was superior to those failed in the composite layer torn. Comparing with the R-SPR joints, a better hardening effect to the TA1 sheet and a relatively lower strength loss to the rivet brought a better joint strength for the PH-SPR joints. For the PH-SPR process, the joint strength is highly dependent on the interlock length, and the static failure mode of the joints was affected largely by the rivet head height. The remaining bottom thickness and interlock length was mainly determined by the plastic deformation capacity of the metallic sheet, and the rivet head height was primarily influenced by the joining force.

中文翻译：

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碳纤维增强聚合物层压板和商业纯钛板的预钻孔自冲铆接

摘要 为改善碳纤维增强聚合物（CFRP）层压板与商用纯钛（TA1）板的异种连接，提出了预孔自冲铆接（PH-SPR）新技术。与常规SPR（R-SPR）接头相比，分析了PH-SPR接头的接头质量、强度、失效行为和成形结构。系统和实验讨论了工艺参数对 PH-SPR 接头的影响。得出的结论是，使用 PH-SPR 可以获得更好的机械互锁。铆钉拔出失败的PH-SPR接头的接头强度优于复合层撕裂失败的接头强度。与 R-SPR 接头相比，TA1板更好的硬化效果和相对较低的铆钉强度损失为PH-SPR接头带来了更好的接头强度。对于 PH-SPR 工艺，接头强度高度依赖于互锁长度，接头的静态失效模式在很大程度上受铆钉头高度的影响。剩余底部厚度和互锁长度主要由金属板的塑性变形能力决定，铆钉头高度主要受接合力的影响。