Publication

Abstract : Arc welded structures got its important due to the usage of them in the field of transportation systems, constructions and power plants. Design defect and overloading plays the main cause for weldment failure. Hence it is necessary to analyze the maximum stresses that can be applied in the weldment. In this work, investigation of welded T-joint by TIG welding process with varying gap and angle between the parent materials to determine the breaking stress under tensile load in the weldment has been done. Finite element (FE) analysis is used to carry out the maximum breaking stress using Ansys software. Experimental analysis has been done to find out the maximum breaking stress under tensile load. Taguchi optimization method is used to optimize the fillet weld section in the experimental analysis. Angle, arc force and gap between parent materials are the three process parameters used for the Taguchi optimization technique. The FE analysis & analytical results of breaking stress is also carried out and verified with the experimental results. The optimized best fillet weld section (low carbon steel AISI1020 and copper) is used to restrict the weldment failure.