Optimization of Process Parameters of Friction Stir Welding by Using Doe
Friction stir welding (FSW) is solid state joining process. This technique is energy efficient, environment friendly and versatile. Welding is a multi input-output process in which quality of weld joint is depends upon a input parameter. Experiments are conducted here, with a tool having a cylindrical pin of 0.4mm clearance. The process parameters are optimized using the Taguchi technique based on Taguchi’s L9 orthogonal array. Experiments have been conducted based on three process namely, the tool rotational speed, tool tilt angle and transverse speed. Tensile strength has been predicted for the Optimum welding parameters and their percentage of contribution in producing a better joint is calculated, by applying the effect of the signal-to-noise ratio and analysis of variance. Based on the study, the tool transverse speed is found to be the influencing factor over the other process parameters, and it enhances the quality of the weld on aluminium plate al(6061). The optimum tensile strength is predicted through taguchi technique. Confirmation tests have been performed for the resulting optimum parameter and the maximum tensile strength was found.