Effects of Impact on the Failure of CFRP/Al Bonded Single-Lap Joints with Different Overlap Length

Abstract

A parametric study on CFRP/Al adhesively bonded single lap joints was experimentally conducted. The primary objective of this study is to investigate the effects of overlap length and impact loads on the failure mode and failure load of joints. Experimental results show that structural failure of joints occurred in the adhesive layer or the bonded interface; failure loads and impact resistance of the joint increased as the overlap length increased; the carrying load of joints which subjected to impact declined significantly because of internal damage of the adhesive layer.