Optimization of welding parameters in CMT welding of Al 5083 alloys using VIKOR optimization method

Abstract

In this paper, an effort is made to examine the cold metal transfer (CMT) welding of Al 5083 sheets having a thickness of 3 mm. The CMT welding was performed based on the L9 Taguchi orthogonal array with welding current (A), welding speed (mm/min) and welding frequency (Hz) as input parameters. The quality of weld was studied by measuring the reinforcement, bead width (BW), depth of penetration (DOP) and heat affected zone width (HAZW). The optimized parameters were found by the VIKOR multi-objective optimization method. The eighth experiment was identified as the optimized parameter from the VIKOR method.