Effect of Top Sheet Materials on Joint Performance of Self-Piercing Riveting

Three types of self-piercing riveting (SPR) joints, i.e., steel/aluminum, carbon fiber reinforced polymer (CFRP)/ aluminum, and aluminum/aluminum, were constructed using three different top sheet materials with the same aluminum alloy as bottom sheet. The effects material on joint quality mechanical behavior evaluated. materials’ characteristics dominate rivet piercing process consequent interlock distance. high-strength steel requires a comparatively higher setting force induces early flaring tail, resulting in larger Though CFRP needs highest to penetrate through fibers, CFRP/aluminum exhibits smallest distance because SPR process-induced damages subsequently less tail. In strength tests, damaged resulted head pullout which exhibited lowest lap-shear cross-tension strengths. contrast, steel/aluminum joints demonstrated strengths their distances. addition experimental analysis, simulations revealed penetration mechanisms various materials, respective