Correlation Between Electrodes Surface State and Dynamic Resistance During Resistance Spot Welding of 5182 Aluminum Alloy

Abstract This study determines the relationship between the state of the electrodes surface and dynamic resistance during the resistance spot welding of aluminum alloy 5182. For this purpose, dynamic resistance values for each welded spot were analyzed and a correlation between these values and the changing electrode surface state throughout the welding process was examined. The resistance is influenced by the roughness of the electrode surface, which changes during the welding process due to the gradual accumulation of Cu/Al phases. Based on the findings of this study, resistance measurements can be effectively utilized to correlate with electrode state.