Mutli-objective methods for welding flux performance optimization

Abstract

The traditional welding flux development is by lengthy and costly trial and error experiments and the optimum welding flux formulation is not guaranteed. This paper presents discussions on promising multi- objective decision making (MODM) methods that can mitigate the limi- tations of the traditional approach to welding flux design. The methods are weighted-sum scalarization (WSS), desirability indices, goal pro- gramming and compromise programming. The steps a welding flux de- signer (WFD) may follow to determine the best compromise welding flux, welding flux design situations where each may be useful and trade- off explorations were mentioned. No attempt was made to determine the relative merits of the approaches because the usefulness of each depends on the welding flux design situation. The descriptions only serve as a guide for the WFD to decide which method best suits his needs.