異種材接着接合界面のじん性と高温高湿下での耐久性評価

抄録

This article reviews the recent development of the test method for the evaluation of toughness and

durability of the interfaces in dissimilar adhesive joints. The test specimens of carbon-fiber-reinforced

thermoplastic（ CFRTP） with polyamide-6（ PA6） matrix and Al alloy were bonded with epoxy and urethan

structural adhesives. Double cantilever beam（ DCB） test was employed for the determination of the interfacial

toughness, while the wedge test was performed for the evaluation of durability under a high-humidity and

high-temperature condition. The crack growth along the interface in DCB test was monitored with the

assistance of the mechanoluminescence（ ML） for the accurate detection of the phenomena at the crack tip. It

was found that the adhesive joints were failed by various failure modes depending on the surface pretreatment

and environmental conditions. Throughout the work, discussion was made concerned with the interfacial

structures and the adhesion mechanism of the dissimilar adhesive joints.