Optimization of wire electrical discharge machining (WEDM) process parameters using Taguchi method

  • S. S. MahapatraEmail author
  • Amar Patnaik


Wire electrical discharge machining (WEDM) is extensively used in machining of conductive materials when precision is of prime importance. Rough cutting operation in WEDM is treated as a challenging one because improvement of more than one machining performance measures viz. metal removal rate (MRR), surface finish (SF) and cutting width (kerf) are sought to obtain a precision work. Using Taguchi’s parameter design, significant machining parameters affecting the performance measures are identified as discharge current, pulse duration, pulse frequency, wire speed, wire tension, and dielectric flow. It has been observed that a combination of factors for optimization of each performance measure is different. In this study, the relationship between control factors and responses like MRR, SF and kerf are established by means of nonlinear regression analysis, resulting in a valid mathematical model. Finally, genetic algorithm, a popular evolutionary approach, is employed to optimize the wire electrical discharge machining process with multiple objectives. The study demonstrates that the WEDM process parameters can be adjusted to achieve better metal removal rate, surface finish and cutting width simultaneously.


WEDM Metal removal rate Surface finish Kerf Taguchi method Genetic algorithm 


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  1. 1.
    Trezise KE (1982) A physicist’s view of wire EDM. Proceedings of the International Conference on Machine Tool Design and Research 23:413–419Google Scholar
  2. 2.
    Rajurkar KP, Wang WM (1993) Thermal modeling and on-line monitoring of wire-EDM. J Mater Process Technol 38(1–2):417–430CrossRefGoogle Scholar
  3. 3.
    Tarng YS, Ma SC, Chung LK (1995) Determination of optimal cutting parameters in wire electrical discharge machining. Int J Mach Tools Manuf 35(129):1693–1700CrossRefGoogle Scholar
  4. 4.
    Scott D, Boyina S, Rajurkar KP (1991) Analysis and optimization of parameter combination in wire electrical discharge machining. Int J Prod Res 29(11):2189–2207zbMATHCrossRefGoogle Scholar
  5. 5.
    Lok YK, Lee TC (1997) Processing of advanced ceramics using the wire-cut EDM process. J Mater Proces Technol 63(1–3):839–843CrossRefGoogle Scholar
  6. 6.
    Huang JT, Liao YS, Hsue WJ (1999) Determination of finish-cutting operation number and machining parameters setting in wire electrical discharge machining. J Mater Process Technol 87:69–81CrossRefGoogle Scholar
  7. 7.
    Rozenek M, Kozak J, DabroVwki L, LubkoVwki K (2001) Electrical discharge machining characteristics of metal matrix composites. J Mater Process Technol 109:367–370CrossRefGoogle Scholar
  8. 8.
    Tosun N, Cogun C (2003) An investigation on wire wear in WEDM. J Mater Process Technol 134(3):273–278CrossRefGoogle Scholar
  9. 9.
    Tosun N, Cogun C, Pihtili H (2003) The effect of cutting parameters on wire crater sizes in wire EDM. Int J Adv Manuf Technol 21:857–865CrossRefGoogle Scholar
  10. 10.
    Sho H, Orimo T, Fukui M (1989) The effect of electrode materials on the characteristics of machinability of wire electro discharge machines,. Proceedings of the International Symposium for Electro Machining (ISEM-9) Nagoya 219–222Google Scholar
  11. 11.
    Peace SG (1993) Taguchi methods: a hands on approach. Addison-Wesley, New YorkGoogle Scholar
  12. 12.
    Phadke MS (1989) Quality engineering using robust design. Prentice Hall Eaglewood Cliffs, New JerseyGoogle Scholar
  13. 13.
    Holland JH (1975) Adaptation in natural and artificial systems. The University of Michigan Press, Ann Arbor, MichiganGoogle Scholar

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© Springer-Verlag London Limited 2006

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringNational Institute of TechnologyRourkelaIndia
  2. 2.Department of Mechanical EngineeringGandhi Institute of Engineering & TechnologyGunupurIndia

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