A hybrid optimization approach for parametric optimization of wire electrical discharge machining of EN-8 carbon steel

摘要

In order to attain higher dimensional accuracy while generating intricate shape geometries on various difficult to machine materials, wire electrical discharge machining (WEDM) process is being extensively preferred in the present day manufacturing industries. For achieving the desired performance, it is often suggested to operate this process at the optimal combination of the available input parameters. Hence, this paper presents an efficient approach hybridizing design of experiments (DoE) method and technique for order of preference by similarity to ideal solution (TOPSIS) approach to develop a meta-model for subsequent identification of the optimal parametric mix for a WEDM process while machining EN-8 carbon steel material. The derived optimal combination is validated based on the developed regression equations for the considered responses that provide better response values as compared to those obtained at the initial machining condition. This approach can also be successfully applied to identify the optimal parametric combinations for other machining processes.