ABSTRACT
This chapter deals with Response Surface Methodology to identify the optimized input parameters, namely spark on-time, spark off-time, gap voltage and spark current, within a specified range of values, to maximize the material removal rate. The machining operation chosen is Electro-Discharge Machining, one of the most common non-traditional machining process. The relationships and parametric interactions between the measurable and controllable variables of MRR are evaluated. Thirty-one experiments were conducted in accordance with L31 orthogonal array for various combinations of process parameters. The experimental results were simulated in Minitab utilizing Response Surface Model. The significant coefficients were obtained by performing Analysis of Variance. The analysis helped in the segregation of the prominent and dormant parameters towards the output. The work also provides a regression relationship between them. The experimental values obtained were tallied with the predicted value, and a good agreement was found. Lastly, the developed model was authenticated with a confirmatory test and advance in the response, i.e., MRR was observed.
