Friction Stir Welding of Al-Mg Alloy: Comparison of Process Parameter Optimization between Single and Multi response Using Taguchi Methodology

摘要

Friction Stir welding (FSW) is a solid state welding process in which the process parameter plays a vital role in determining the output quality characteristics of the weld. The process parameter optimization of FSW process enhances the quality of the weld further. In this paper an attempt is made to compare the process parameter optimization between single and multi response using taguchi L9 orthogonal experimental design. Assignment of Weight method is used to solve the multi response problem. The process parameters considered for optimization are the Rotational speed of the tool in rpm, Transverse speed in mm/min and the axial force in kN. The responses are the tensile strength of the FSW welds, and input power required for the process. The optimum levels of the process parameter obtained by single and multi response optimization are discussed and compared.