Parametric Optimization of Friction Welding Parameter of Ferritic Stainless Steel and Copper Material Using Taguchi Approach
Joining of dissimilar materials is increased rapidly in many industry sectors all over the worldwide. Friction welded joint not only gained its property related to mechanical strength but also with absence of defects in weld region. In this study, the weld behavior and its measurement of impact strength is analyzed using friction welding. Friction pressure, upset pressure, and rotational speed are varied using Taguchi’s L9 orthogonal array with constant burn-off length throughout the experiment. The dissimilar materials such as ferritic stainless steel and copper material are welded effectively under each condition. The response made from impact test is ranged from 24 to 46 J/cm2. Analysis of variance (ANOVA) showed that the parameter involved under rotational speed is the most influencing factor in determining the impact strength followed by upset and friction pressure. The confirmation test is conducted to validate the optimal parameter and was found to be increase in impact strength with increase in 1.8% than the predicted welding parameter.
KeywordsFriction welding Taguchi Stainless steel Copper