masood aghakhani - assistant professor
maziar mahdipour jalilian - M.Sc. Student faculty of engineering
alimohammad karami - M.Sc. Student faculty of engineering

Gas metal arc welding is one of the most important arc welding processes used in manufacturing and repair. In this process selecting appropriate values for process variables is essential in order to decide upon metal transfer and subsequently control the heat input in to the workpiece from which reliable predictions could be made about the metallurgical mechanical properties and performance of the welded joints.

gas metal arc welding (GMAW), weld dilution, weld quality , regression analysis , fuzzy logic method , fractional factorial design.