Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 09, 2018 - September 12, 2018
In recent years, to achieve reducing the fuel consumption, transportation equipment for automobiles has been applying to lightweight materials such as high strength steels. At the same time, establishment of a welding technique to a wide range of materials is required, and this study focused on adhesive bonding. Adhesive bonding enables multi-material structure by dissimilar welding, high strength for joining thin plate is expected by surface joining. However, there are few researches on fatigue strength for adhesive bonding joints using automotive adhesives. This study investigated the influence of heating time on the fatigue strength of joints bonded with automotive steel sheets SPCC by one-pack thermosetting epoxy resin to create a bonded joint with higher strength and accuracy. The static and fatigue strength of the joint improves as increasing the heating time. In particular, to improve the fatigue strength of adhesive bonded joints, it is necessary to improve the interface strength between the adherend and the adhesive. In other words, it was found that an increase in the cohesive failure rate affects improvement in fatigue strength.
