Deformation and strength of stepped-lap bonded joints under static tensile loading are investigated both analytically and experimentally. The joints used in this study consist of the same metal adherends of carbon steel and an adhesive of epoxy resin. The effects of the overlap length and number of steps on the joint strength are studied. The joint strength is predicted by applying the strength criteria on the adherends, the adhesive and their interfaces in the joint. The predicted results agree fairly well with the experimental initial cracking strengths. The experimental final fracture strengths of the joints increase with the overlap length and with the number of steps.
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