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Optimisation of WEDM process parameters during machining of HCHCr steel using TOPSIS method

Author

Listed:
  • Sarat Kumar Sahoo
  • Sunita Singh Naik
  • Jaydev Rana

Abstract

Wire electrical discharge machining (WEDM) is an advanced non-conventional machining process specifically used for obtaining complex 3D shape objects in hard materials with high accuracy. The present study investigates the effect of various process parameters viz. pulse on time, pulse off time, wire feed and servo voltage on response variables such as cutting speed, material removal rate, kerf width and surface roughness on machining of high carbon high chromium steel. Taguchi's L9 orthogonal array for four factors and three levels has been used for designing the experiment. A novel technique for order preference by similarity to ideal solution (TOPSIS) approach has been applied to select the optimal level of machining parameters. Analysis of variance (ANOVA) has been conducted for investigating the effect of process parameters on overall machining performance. The effectiveness of proposed optimal condition is validated through the confirmatory test. The result of this study highlights that the parameters like pulse on time and servo voltage are significantly influencing to the machining performance.

Suggested Citation

  • Sarat Kumar Sahoo & Sunita Singh Naik & Jaydev Rana, 2019. "Optimisation of WEDM process parameters during machining of HCHCr steel using TOPSIS method," International Journal of Process Management and Benchmarking, Inderscience Enterprises Ltd, vol. 9(2), pages 216-231.
    • Handle: RePEc:ids:ijpmbe:v:9:y:2019:i:2:p:216-231
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