Prediction of Weld Bead Dilution in GMAW Process Using Fuzzy Logic
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 into the workpiece from which reliable predictions could be made about the metallurgical, mechanical properties and performance of the welded joints. In this paper, the welding dilution in gas metal arc welding of ST37 steel has been predicted by fuzzy logic. A five level five factor rotatable central composite design was used to collect the welding data and the weld dilution was modeled as a function of wire feed rate, welding voltage, nozzle-to-plate distance, welding speed and gas flow rate.
M. Aghakhani et al., "Prediction of Weld Bead Dilution in GMAW Process Using Fuzzy Logic", Applied Mechanics and Materials, Vols. 110-116, pp. 3171-3175, 2012