Multi-objective methods for welding flux performance optimization Več namenske metode za optimizacijo uspešnosti varilnega praška

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. Izvlecek: Klasicni razvoj varilnih praskov poteka z dolgotrajnimi in dragimi preizkusanji in odpravami napak. Pri taksnem nacinu ni zagotovljena optimalna sestava varilnega praska. V clanku so predstavljene vec na- menske metode odlocanja (MODM), ki odpravijo nekatere omejitve tradicionalnega pristopa raziskav varilnega praska. Uporabljene me- tode so skalarizacija uteženih vsot (WSS), indeksi zaželjenosti, ciljno programiranje in kompromisno programiranje. Navedeni so koraki za zagotovitev naboljsega varilnega praska, ki naj bi jih sledil nacrtova- lec varilnega praska (WFD). Prav tako so omenjeni razlicni preiska- ni kompromisi za nekatere razmere pri nacrtovanju varilnih praskov. Clanek ni poskusal odgovoriti na vprasanje relativne vrednoti pristo-