Shear Strength Enhancement of Single Lap Adhesive Joint using Surface Pattern

Structural adhesive bonding technology is widely utilized in various applications in modern automotive and aviation industries. The use of adhesive bonding rather than mechanical fasteners offers the potential for reduced weight and cost. Adhesive bonding technology offers great design as it can be easily integrated into almost all available industrial sequences of single-piece work or mass production. The single lap joint with metallic or compo-site flat plates is the most common due to its simplicity and efficiency. In this paper, experimental investigations were carried out in order to evaluate shear strength of adhesively bonded AA6082-T6 Aluminum alloy under lap joint. Three adhesives were used from different manufacturers. The aluminum alloy metal on surface generates the micro-texture pattern is tested the shear strength. Effects of different adhesive type, adherence thick-ness, surface texture pattern depth and adhesive thickness on shear strength were experimentally evaluated using Taguchi technique. Experiments were carried out on the universal testing machine (STS-248). Results indicate that surface with micro-texture is able to achieve noticeable improvement in adhesion shear strength.