Optimization of wire-cut EDM parameters using Taguchi and entropy coupled COPRAS approach for machining of CRT glass powder reinforced magnesium surface composite developed using friction stir processing

The primary purpose of this investigation is to optimize the wire cut EDM parameters using computational Taguchi and Entropy coupled COPRAS approach. This optimization is aimed at machining the cathode ray tube (CRT) glass powder reinforced magnesium surface composite, developed using friction stir processing. The multi-objective optimization studies were performed using MINITAB software package. The mechanical properties and machinability of CRT reinforced magnesium surface composite was analysed. The regression-based parametric mathematical models were formulated to predict the material removal rate (cm 3 /min), kerf width (µm) and surface roughness (µm) and were validated using analysis of variance. The results showed superior strength and hardness of 15% CRT reinforced Mg surface composite on compromising the ductility. The CRT-reinforced Mg surface composite machined using the optimum parameters attained through computational hybrid approach showed the machining characteristics of 0.051 cm 3 /min, material removal rate, 3.673 µm surface finish and 0.357 µm kerf width respectively.