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1,2 Assistant Professor, Mechanical Department, ANITS, Visakhapatnam-531162, Andhra Pradesh, India 3 Professor, Mechanical Department, ANITS, Visakhapatnam-531162, Andhra Pradesh, India AstractThe present work illustrates the impact of the process parameters on the various performance characteristics. AA7075 work pieces are machined using taguchi’s L9 orthogonal array. The responses of material removal rate (MRR) and surface roughness (Ra and Rz) at different combinations of speed, feed depth of cut are optimized using preference selection index (PSI) method. The results of PSI concluded that the speed at 2000 rpm, feed at 0.4 mm/rev and depth of cut at 0.75 mm are the optimal combination for achieving the higher material removal rate and lower surface roughness concurrently. KeywordsMaterial Removal Rate (MRR), Surface Roughness (Ra and Rz), Preference Selection Index (PSI) method.

Application of Preference Selection Index (PSI) Method for the Optimization of Turning Process Parameters