Optimization in Turning Austenitic Stainless Steel using TOPSIS and Taguchi Method

This paper reports on an optimization of turning process by the effects of machining parameters applying TOPSIS methods to improve the quality of manufactured goods, and engineering development of designs for studying variation. Austenitic Stainless steel of grade AISI 304 is used as the work piece material for accomplishing the experimentation to optimize the Material Removal Rate. The bars used are of diameter 50mm and length 200mm. There are four machining parameters i.e. Spindle speed, Feed rate, Depth of cut and Nose Radius. Taguchi orthogonal array is designed with five levels of turning parameters with the help of software Minitab 17. In MINITAB Taguchi method was used to investigate the significance of these parameters on the response variables. In 25 experiments are performed and material removal rate (MRR), Surface Roughness, And Cutting Force is calculated. Taguchi method stresses the importance of studying the response variation using the signal-to-noise (S/N) ratio, result to minimization of pleasant characteristic variant as a result of uncontrollable parameter. The objective was to find the optimum machining parameters so as to minimize the surface roughness and tool cutting forces and maximize the material removal rate for the selected tool and work materials in the chosen domain of the experiment. Surface Roughness was measured using portable surface roughness tester-TR110.