Determination of Ideal Mild Steel Weld Properties Using the Simple Additive Weighting (SAW) Method

Abstract

Weld deformation which directly contributes to failures of welded components, has been a real time challenge in the manufacturing industry. To resolve this challenges, subtle manipulation of input process parameters is recommended by Researchers. This manipulation of input process parameters is done through the application of optimization methods hence this study. In this study, the Simple Additive Weighting (SAW) method was used. This method was categorized into four groups, which are namely, linear scale transformation-Max method; linear scale transformation-Sum method; Vector normalization method and linear scale transformation-Max Min method. Each of these SAW methods was used to optimize the output parameters, which were classified as maximum criteria. It was noticed from the analysis, that the higher the values of the mechanical properties, the better the weldquality obtained and from using the linear scale transformation maximum method, weldment 7 was found to possess the best mechanical properties with ultimate tensile strength (UTS) of 395MPa, Impact energy (CVN) of 250J, Bead Height(BH) of 1.98 mm and Bead Width (BW) of4.82mmwas found to possess the best input and output parameters.