An approach for optimization the process parameter by using TOPSIS Method of Al–24%SiC metal matrix composite during EDM

Abstract

Present investigation is optimized for the process parameters during electrical discharge machining (EDM) process of Al-SiC 24% metal matrix composite. In this study the process parameters are peak current, pulse on time and flushing pressure for each experiment on the responses like material removal rate (MRR), tool wear rate (TWR) and surface roughness (Ra). Box-Behnken Central composite design method is used for designing a three factor to construct a statistical model for accurate prediction of responses. In order to optimize the multiple responses problem Technique for order preference by similarity to an ideal solution (TOPSIS) methodology is used to get a single numerical index. The Analysis of Variance (ANOVA) technique is carried out to check the significance of the models and study the effect of process parameters. The second -order mathematical equitation is developed by using Response surface methodology (RSM) to get the predicted result. Finally conformity test is conducted to perform the desirable approach of present work.