A Study on Behavior of Magnesium-Woven Fabric Glass/epoxy Joints with Bolting and Bonding Hybrid Joining

초록

This study evaluates the behavior such as failure strength and failure modes of single lap hybrid joints with woveb fabric GFRP and magnesium adherends. The joints were fabricated by hybrid (bonding + bolting) joining methods. The effects of the joint width were verified under different value of 36mm, 40mm and 44mm. The main failure mode of the bolt and hybrid joints was the net-tension failure of the glass adherends. At the initial stage of the loading, the bearing failure of the glass adherends was dominant. Increasing the load, the final failure mode was net-tension failure due to the stress concentration around the bolt hole. After the final failure, the plastic deformation was observed in the magnesium adherends. In the load-displacement curve, there were two peak points. The load increased along with the displacement initially and suddenly dropped due to the debonding between the GFRP and magnesium adherends. After the dramatic drop, it increased again exponentally and finally fell down due to the bearing failure of the glass adherends. In the three different configuration, the specimen with width of 40mm showed the highest failure strength.