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Evolutionary programming method for modeling the EDM parameters for roughness

(BQ) The method of electrical discharge machining (EDM), one of the processing methods based on non-traditional manufacturing procedures, is gaining increased popularity, since it does not require cutting tools and allows machining involving hard, brittle, thin and complex geometry | j o u r n a l o f m a t e r i a l s p r o c e s s i n g t e c h n o l o g y 2 0 0 ( 2 0 0 8 ) 347–355 Assab79PM, which demonstrates the chemical properties of the DIN 1.2379 cold j o u r n a l h o m e p a g e : w w tool l s e v i e r . c o m / l o c a t e / j m a t p r o t e c work w . e steel Evolutionary programming method for modeling the EDM parameters for roughness ¨ Ozlem Salman, M. Cengiz Kayacan ∗ University of Suleyman Demirel, CAD/CAM Research and Application Center, 32300 Isparta, Turkey a r t i c l e i n f o a b s t r a c t Article history: The method of electrical discharge machining (EDM), one of the processing methods based Received 14 April 2006 on non-traditional manufacturing procedures, is gaining increased popularity, since it does Received in revised form not require cutting tools and allows machining involving hard, brittle, thin and complex 7 September 2007 geometry. Accepted 10 September 2007 By using different EDM parameters (current, pulse on-time, pulse off-time, arc voltage), the Ra ( m) roughness value as a result of application of a number of copper electrode-hardened powder metals (cold work tool steel) to a work piece has been investigated, in this study. At Keywords: the same time, roughness values obtained from the experiments that have been modeled by Electrical discharge machining using the genetic expression programming (GEP) method and a mathematical relationship Genetic expression programming has been suggested between the GEP model and surface roughness and parameters affecting Surface roughness it. Moreover, EDM has been used by applying copper, copper–tungsten (W–Cu) and graphite electrodes to the same material with experimental parameters designed in accordance with the Taguchi method. Results obtained from this study have been compared among each other and similar studies in the literature. © 2007 Published by Elsevier B.V. 1. Introduction The first EDM application was carried out by Mr. and .