고무변성 에폭시 알루미늄 접합부의 계면균열 파괴거동

Abstract

Fracture mechanism of an interface crack in an adhesive joint is important from the viewpoint of the structural integrity of the adhesive joint. The rubber-modified epoxy resin is used in engineering components as adhesive. The damage zones around crack tips in adhesive joints consisting of aluminum and rubber-modified epoxy resin are compared with those around crack tips in the rubber-modified epoxy resin. Damage zones around crack tips are observed by a optical microscope and an atomic force microscope(AFM). The results show that the damage zones generated by cavitation in rubber particles in the modified epoxy resin specimen are not observed around crack tips in the adhesive joints.