抄録
Bonding technology is good for lightening, saving energies, rationalization of production process, and dispersing stress concentration. In reality, the adhesive layer is subjected to cyclic loading, so it is necessary to study adhesive strength under not only static loading but also cyclic loading. In this study, cylindrical butt type specimen and XD911 epoxy adhesive are used. Both tests under static and cyclic loading are done under combined tensile with shear stresses. It is found that Modified Adhesive strength surface by taking stress singularity into consideration, corresponds to fatigue failure surface.