Grey-Taguchi based optimizationof EDM process for titanium alloy

Die-sinking electric discharge machining (EDM) is one of the essential non-contact machining processes whichis often used to produce complex profiles. However, machining of titanium alloys is found to be difficult even using EDM due to the inadequate process parameter sets affected by improper parametric correlation. Therefore, this work demonstrates the parametric optimization of EDM for desired responses using grey relational Taguchi analysis. Taguchi method was used to design the experiments using L-25 orthogonal array and the effect of each parameter on the responses while machining Ti-6Al-4V alloy using a copper electrode was studied collectively. (C) 2015 Published by Elsevier Ltd.