Investigation on Process Parameter Optimization for Coating Density and Microhardness of Cold-Sprayed Coatings

摘要

Most of the existing multi-response optimization approaches focus on subjective and practical know-how of the process. As a result, some confusions and uncertainties are introduced in overall decision-making process. In this investigation, an approach based on a utility theory and Taguchi quality loss function (TQLF) has been applied to low-pressure cold spray (LPCS) process to deposit copper coatings, for simultaneous optimization of more than one response characteristics. In the present paper, two potential response parameters, i.e., coating density (CD) and microhardness (MH), have been selected. Utility values based on these response parameters have been analyzed for optimization by using Taguchi approach.