Parametric Optimization of WEDM Process for AISI 1026 Steel Using Taguchi-TOPSIS Hybrid Method

In this research, holes were created in a mild steel AISI 1026 work piece using a Wire EDM (Electrical Discharge Machining) machine. The goal was to evaluate and look at the machined holes' quality characteristics. The control parameters of Wire Electrical Discharge Machining (WEDM) like voltage, pulse-on time, and pulse-off time have been taken into consideration in this work. Surface Roughness (SR) and Material Removal Rate (MRR) have been considered in the assessment of the quality characteristics. The Taguchi L9 orthogonal array was used to set the control settings at different levels during the experiments. Present research has established rankings on various experimental sets by using the TOPSIS approach for combined response analysis. Optimal parameter settings were found using the Signal-to-Noise (S/N) ratio. The research showed that voltage at level 1, pulse on time at level 1, and pulse off time at level 3 were the optimal parameters. The most significant factor was determined using ANOVA, and Pulse on Time provided the highest proportion (60.27%). The performance index is calculated using the regression equation, which also shows the relationship between the machine's control variables and performance index. The S/N ratio value of -0.8569 obtained in the confirmation test, that shows successful implementation of the Taguchi-TOPSIS approach.