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Fatigue performance of metallic reverse-bent joints

Adhesively bonded lap joints, which are used extensively in the automotive industry, have high stress concentrations, which limit their strength. Work carried out by the authors indicated that a reverse-bent joint geometry reduces the effect of the stress concentration and this paper furthers this work by investigating fatigue performance. This research showed that the improvements obtained under static conditions translate to even higher benefits in fatigue. This work was sponsored by Bi Composites, Crompton Technology Group, Oxford Magnet Technology, Salex Acoustic Materials and the Ford Motor company, which is looking to incorporate these joints into production vehicles.