Multi-response optimization of electro-chemical honing using utility-based Taguchi approach

This paper presents a utility-based Taguchi loss function strategy for the multi-response optimization of electro-chemical honing (ECH) process. ECH is a precision micro-finishing technology that hybridizes electro-chemical machining and conventional honing principles to provide controlled functional work surface-generation and fast material removal capabilities in a unique single operation. The approach utilizes a composite utility function using the Taguchi loss functions of multiple ECH responses in selecting the optimal parametric settings such that the overall functional utility of the product is maximized. The use of the Taguchi loss functions ensures the process is robust against the random variations. Actual experiments confirm the feasibility of the strategy over a wide range of machining conditions employed in ECH.