Gas Metal Arc Welding

Dear Colleagues,

Gas metal arc welding (GMAW) is the most widely used fusion joint process due to its many advantages, such as its suitability for most commercial metals and all weld positions, high quality weld, high welding speed, and suitability for automation.  GMAW is also a complex process, which involves interactions of arc plasma, metal transfer, weld pool dynamics and solidification, with simultaneous interaction of materials at the plasma, gaseous, and solid states. In addition to experimental study, numerical models have been developed to study a large number of complex phenomena in a GMAW process, including electromagnetics, heat transfer, fluid flow, metal transfer, microstructure evolution, and thermal mechanical effects. Both experimental study and numerical modeling of the GMAW process have significantly improved the understanding of the welding physics and help optimize welding process parameters and predict microstructure evolution and weld properties. With the advancement of the numerical modeling of the GMAW process, and the sensing and control of the welding process, real-time control of the GMAW process can be realized. GMAW has also been extended for more complex applications through digitally controlled power supplies, wire feeders, and gas regulation, such as welding automation, thin sheets, and dissimilar materials.

The Special Issue of the journal Applied Sciences, “Gas Metal Arc Welding”, aims to cover recent advances in the development of numerical modeling and experimental study of GMAW processes, sensing and control of GMAW processes, process optimization, and new applications of GMAW.

Dr. Hai-Lung Tsai
Dr. Junling Hu
Guest Editors

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