Prediction of Surface Roughness in Wire Electric Discharge Machining (WEDM) Process based on Response Surface Methodology

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Author(s) Anish Kumar | Vinod Kumar | Jatinder Kumar
Pages 708-719
Volume 2
Issue 4
Date April, 2012
Keywords WEDM,Titanium, Response surface methodology, Box-Behnken design, Desirability function


This paper presents an investigation on WEDM of pure titanium (grade-2). An attempt has been made to model the response variable i.e. surface roughness in WEDM process using response surface methodology. The experimental plan is based on Box-Behnken design. Six parameters i.e. pulse on time, pulse off time, peak current, spark gap voltage, wire feed and wire tension has been varied to investigate their effect on surface roughness. The surface roughness has been optimized using multi-response optimization through desirability. The ANOVA has been applied to identify the significance of developed model. The test results confirm the validity and adequacy of the developed RSM model. Finally, the optimum parametric setting has been designed for the optimization of process.

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