Optimization of Machining Characteristics in EDM of Si₃N₄-TiN Composites by Taguchi Grey Relational Analysis

Abstract:

In this study, Sparking parameters specifically Current (I), pulse on time (t_on), pulse off time (t_off), spark gap and dielectric flushing pressure (P) are optimized with the consideration of multi responses such as Material Removal Rate (MRR) and Electrode wear Rate (EWR). The characteristic features of the Spark EDM process are explored through Taguchi L₁₈ orthogonal array design of experimental studies with various process parametric combinations. To optimize the above machining parameter, grey relation techniques are used. Based on the grey relation grade, optimum levels of parameters have been identified and major contribution of parameters is determined by ANOVA. Verification test is conducted to validate the test result.

• Periodical: Applied Mechanics and Materials (Volumes 592-594)
• Pages: 600-604
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.592-594.600
• Online since: July 2014
• Authors: L. Selvarajan*, C. Sathiya Narayanan, R. Jeyapaul
• Keywords: EDM, EWR, MRR, Si₃N₄+TiN Ceramic Composite, Taguchi L₁₈ Orthogonal Array

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