Application of SWARA-CoCoSo-based approach for tool selection of an electrical discharge machining process

Vidyapati Kumar; Abhishek Mohata; Ankita Mistri; Marian Bartoszuk

Authors

Vidyapati Kumar Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur WestBengal, India
Abhishek Mohata Department of Mechanical Engineering, Jalpaiguri Government Engineering College, WestBengal, India
Ankita Mistri Department of Mechanical Engineering, Indian Institute of Technology, Dhanbad, Jharkhand, India
Marian Bartoszuk Department of Manufacturing Engineering and Materials Science, Opole University of Technology, 45-758 Opole, Poland

Keywords:

Tool selection, MCDM, SWARA method, CoCoSo, EDM process

Abstract

Electrical discharge machining (EDM) is a non-traditional machining process widely used in manufacturing to create complex geometries on hard-to-machine materials. The tool material used in EDM plays a crucial role in determining the machining performance and final surface finish of the workpiece. In this research, we aimed to optimize the tool selection for creating circular holes on SG iron (grade 450/12) using EDM. To this end, we employed a step-wise weight assessment ratio analysis (SWARA) based combined compromise solution (CoCoSo) approach to evaluate the performance of different tool materials under various machining conditions. The machining conditions considered in this study included peak current (I), pulse-on time (Ton), and inter-electrode gap (IEG). The results of our study showed that the CoCoSo approach is an effective method for tool selection in EDM, and it can be used to identify the optimal tool material and machining conditions for creating circular holes on SG iron. It has been demonstrated that implementing the SWARA-CoCoSo method can effectively optimize the EDM process with regard to sustainable machining practices.