ABSTRACT
In the present study, tensile strength of adhesively bonded joints constructed with aluminum alloy and Pultruded Glass Fiber Reinforced Plastics(PULGFRP) adherends has been investigated. The PULGFRP adherends had the sandwich structure in which they comprised a core part containing unidirectional glass rovings and thin continuous glass mat layers on it. Further, a non-woven fabric layer was on one side of the mat layer. From our previous studies, it was predicted that the Al-PULGFRP adhesively bonded joint would fracture at the bonded surface part of the PULGFRP adherend. Therefore, the strength of the joint specimens whose bonded surface parts of the PULGFRP adherends were different was measured and the effects of the bonded surface layer on the strength of the joints were investigated. In the experiments, three kinds of PULGFRP plates whose surface mat layers were different were prepared. And two kinds of joint types, a single and a double lap joint, and three kinds of lap length for the single lap joints were adopted as the parameters affecting the strength of the joints. The strength of the Al-PULGFRP adhesively bonded joints was studied by comparing the strength of these many kinds of joint specimens. From the results of the present study, it was made clear that the properties of the bonded surface parts of the PULGFRP adherends influenced the strength of the bonded joints.
