Abstract
Rubber-modified epoxy resin is used in engineering components as adhesive. The failure behaviour of an interface crack in an adhesive joint is important from the viewpoint of the structural integrity of the adhesive joint. In the present tsudy, the damage zones around crack tips in two-phase adhesive joints consisting of aluminum and rubber-modified epoxy resin are compared with those around crack tips in the rubber-modified epoxy resin alone which are called bulk specimens hereafter. Damage zones around crack tips are observed by a polarization microscope and an atomic force microscope (AFM). As a result, damage zones generated by cavitation in rubber particles in the bulk specimen are not observed around crack tips in the two-phase adhenive joints.
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