Abstract
The authors have already clarified that it is possible to join CFRP and Al alloy by using friction lap spot joining, which is an application of friction lap joint to spot joining, by using an insert material. In this study, in order to clarify the effect of insert material shape on the joint strength of friction lap joined dissimilar metal joints using insert materials, the strength of joints using mesh-shaped PET and joints using flat plate PET was evaluated by maximum tensile shear test. The maximum tensile shear load of joint using mesh-shaped PET as insert material was significantly lower than that of joint using flat plate PET. On the other hand, the apparent joining area increased significantly in joints using a mesh shape as an insert material. It is considered that the molten PET flows relatively freely to fill the gaps in the lattice, increasing the apparent joining area.
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