6] In this study, the statistical method of three-factors, five-levels factorial central composite rotatable design has been used to develop mathematical models to correlate angular distortion with multi-pass GMAW process parameters.

Effects of process parameters on angular Distortion of gas metal arc welded Structural steel plates"--Supplement to the welding journal.

Angular distortion often occurs in a butt weld when the transverse shrinkage is not uniform along the depth of the plates welded.

For this the extent of angular distortion should be known for a particular set of operating parameters.

In this paper a new FEA model to predict temperature time histories, angular distortion and residual stresses with sufficient accuracy is detailed.

The results of the simulation are evaluated in terms of the comparison of the temperature-time graph, angular distortion and residual stresses with the experimental observation.

Sequentially, coupled field analysis is carried out to determine residual stresses and angular distortion as discussed in computation scheme fig.

Measurement of Temperature-Time history, Angular distortion and residual stresses was done using following procedure.

The angular distortion was measured using sine bar principle with the help of height master.