Optimization of Operating Parameters for EDM Process based on Taguchi - Grey Relational Analysis

The present work is aimed to optimize the input process parameters of (EDM) process by considering the effect of input parameters viz. Current, Voltage, Pulse On, Pulse Off. Experiments conducted with these parameters in three different levels data related to process responses viz. Metal removal rate, surface roughness (Ra), Dimensional Deviation (DD) measured for each of the experimental run. Predicted data utilized for identification of the parametric influence in the form of graphical representation for showing influence of the parameters on selected responses. Predicted data is given by the models (as per Taguchi’s L27 OA and Grey Relational Analysis (GRA)) designs used in search of an optimal parametric combination to achieve desired yield of the process. Taguchi techniques used for optimization of minimizing the surface roughness and maximization MRR and Minimization of DD. Multi objective Grey relational analysis is used to find the optimal level of parameters for the output responses.