The use of the orthogonal array with grey relational analysis to optimize the electrical discharge machining process with multiple performance characteristics |
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Authors: | J. L. Lin C. L. Lin |
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Affiliation: | 1. Department of Mechanical Engineering, CEG, Anna University, Chennai 600025,India;2. Department of Mechanical Engineering, Veltech Hightech Dr.Rangarajan Dr Sakunthala Engg Coll, Chennai 600062, India |
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Abstract: | In this paper a new approach for the optimization of the electrical discharge machining (EDM) process with multiple performance characteristics based on the orthogonal array with the grey relational analysis has been studied. A grey relational grade obtained from the grey relational analysis is used to solve the EDM process with the multiple performance characteristics. Optimal machining parameters can then be determined by the grey relational grade as the performance index. In this study, the machining parameters, namely workpiece polarity, pulse on time, duty factor, open discharge voltage, discharge current, and dielectric fluid are optimized with considerations of multiple performance characteristics including material removal rate, surface roughness, and electrode wear ratio. Experimental results have shown that machining performance in the EDM process can be improved effectively through this approach. |
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Keywords: | Electrical discharge machining Orthogonal array Grey relational analysis Optimization |
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