Selection of material under conflicting situation using simple ratio optimization technique

Abstract

Optimal selection of material for engineering design from a set of materials is more complex due to availability of huge amount of material. An improper selection of material makes adverse effect on successful engineering design, productivity, quality, customer satisfaction, etc. Since the selection of material involves multiple criteria, therefore, the material selection problem is a multi-criteria decision making problem. A systematic and efficient approach toward the material selection is necessary in order to select the best material. In this paper, an integrated approach comprising of entropy and multiple objective on the basis of simple ratio analysis (MOOSRA) method is used to solve material selection problem. A case study on exhaust manifold has been taken for the analysis. The result shows that the carburized steel is the nest material while cast alloy is the worst material.