Friction welding is widely used in determining the mass production process for joining dissimilar materials due to its environment friendliness, production efficiency and low heat input. The process parameters of friction pressure, upset pressure, rotational speed and burn-off length shows the major role in deciding the strength of friction welded joint to predict the response of tensile strength. In this experimental study, the dissimilar joints of austenitic stainless steel and copper are evaluated by response surface methodology (RSM) using central composite design to develop the mathematical relationship. The correlation coefficient of the regression model was tested by analysis of variance method to check their adequacy of the tensile strength of friction welded joint. Friction pressure has high significance on tensile strength followed by speed and burn off length. A good agreement is shown by comparing between the measured and calculated results of tensile strength.

Keywords: Friction welding, RSM, Austenitic Stainless Steel, Copper, ANOVA