Abstract
This paper presents the results of a multi-criteria decision-making (MCDM) study in powder-mixed electrical discharge machining (PMEDM) cylindrically shaped parts made of 90CrSi tool steel. In this study, five input factors including powder concentration, pulse duration, pulse off time, pulse current, and servo voltage were selected for the investigation. Besides, the Taguchi method was applied for the experimental design. Furthermore, the TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) method was used to solve the MCDM problem in order to achieve both a low electrode wear rate (EWR) and a high material removal speed (MRS). The Entropy method was also used to compute the weights of the criteria. Based on the findings, the best solution for the MCDM problem in PMEDM cylindrically shaped parts was proposed.
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