Multi response optimization of wire EDM operations using robust design of experiments |
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Authors: | R Ramakrishnan L Karunamoorthy |
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Affiliation: | (1) Dept. of Mechanical Engineering, EVP Engineering College, Chennai, 602 103, India;(2) Dept. of Mechanical Engineering, Anna University, Chennai, 600 025, India |
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Abstract: | In this present study a multi response optimization method using Taguchi’s robust design approach is proposed for wire electrical
discharge machining (WEDM) operations. Experimentation was planned as per Taguchi’s L16 orthogonal array. Each experiment
has been performed under different cutting conditions of pulse on time, wire tension, delay time, wire feed speed, and ignition
current intensity. Three responses namely material removal rate, surface roughness, and wire wear ratio have been considered
for each experiment. The machining parameters are optimized with the multi response characteristics of the material removal
rate, surface roughness, and wire wear ratio. Multi response S/N (MRSN) ratio was applied to measure the performance characteristics
deviating from the actual value. Analysis of variance (ANOVA) is employed to identify the level of importance of the machining
parameters on the multiple performance characteristics considered. Finally experimental confirmation was carried out to identify
the effectiveness of this proposed method. A good improvement was obtained. |
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Keywords: | ANOVA MRR MRSN Surface roughness WEDM WWR |
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