Abstract: Friction Stir Spot Welding (FSSW) is a non-fusion welding process which creates a metallurgical bond between two specimens. Since Resistance Spot Welding (RSW) has many disadvantages including high wear rate of electrode and the welding of materials using this RSW technique generates high amount of heat in the specimen and it also cools rapidly, due to this rapid cooling the material becomes brittle at that welded area and thus reducing the physical properties of the material, due these effects FSSW has been selected to weld AA3102 and Carbon Steel 1010. FSSW is governed by three process parameters which include, Tool Rotational Speed, Dwell time, Load. In this work the effect of process parameters on joint strength has been studied based on experimental and numerical results. The Taguchi method is selected as a tool to identify the optimized process parameters for welding AA3102 and Carbon Steel 1010. The experiments conducted as a combination of the process parameters were made based on the result given by the Taguchi orthogonal table. The Taguchi method uses Signal to Noise ratio (S/N ratio) to determine the effective process parameter. The specimens that are welded using these parameters were tensile tested and with the help of the results obtained the Taguchi analysis is done and the parameters which will yield the maximum strength is obtained.

Keywords: Friction Stir Spot Welding (FSSW), Tool Rotational Speed, Dwell time, Load, Taguchi method.

| DOI: 10.17148/IARJSET.2020.71112