Multi Response Optimization of EDM Process Parameters using Assignments of Weight Method

Since electrical process parameters are determining the machining characteristics of Electrical Discharge Machining (EDM), it is important to find the optimum values of those parameters and contribution of each parameter, AISI304 stainless steel was selected as work piece material whereas copper, brass and tungsten carbide were selected as tool material. The experiments were conducted with different levels of input factors such as gap voltage, discharge current and duty factor based on L9 orthogonal table. The purpose of the present study is to investigate the contribution of electrical process parameters on machining characteristics and optimal combination of those parameters using Taguchi Assignments of weight method. From the results, it has been revealed that electrical parameters have significant role in EDM process and the optimal values have been found using proposed multi response methodology.