A Comparative Study of Induced Residual Stress during Welding of Plate-to-Plate T-jointed Metal Plates (ASTM A572)

Welding represents one of the most complex manufacturing processes in terms of number of variables involved and factors contributing to the final output but it is one of the most important operations of the manufacturing industry. The Objective of this paper is to study the values of residual stresses which were induced during the preparation of the test specimens. The residual stress which was induced during welding operation was measured by two distinguished processes, the incremental hole drilling method and in second method, a multichannel strain indicator device was used to measure residual stresses. Experimental residual stress measurement was performed by placing the strain gauge rosettes. The data received from these strain rosettes were processed by the H-DRILL software. This software directly converted the input strain values into the corresponding residual stress values, and then the strains values were feed into the MCSI device to collect the result.