Publication Type:

Journal Article

Source:

International Journal of Computational Materials Science and Surface Engineering, Volume 4, Number 3, p.265-280 (2011)

URL:

http://www.scopus.com/inward/record.url?eid=2-s2.0-80053649212&partnerID=40&md5=e679d43b8018189995d1ed636cce2739

Keywords:

Computational efficiency, Computational methods, Computer simulation, Efficiency, Electric welding, Flow simulation, Gas metal arc welding, Gas tungsten arc welding, GTAW, Heat distribution, Heat flows, Heat flux, Industrial applications, Tungsten, Tungsten compounds, Weld pool, Welds

Abstract:

To overcome the difficulty of solving a complex heat and fluid flow model of GTAW for predicting temperature distribution, cooling rate and weld pool geometry, a simplified simulation method has been followed in this study. The arc parameters as a measure of the heat distribution required for simulation were experimentally obtained from the arc images. The net heat flux was determined by the application of a simplified simulation method as opposed to calorimetric/genetic algorithm techniques used previously and validated experimentally. The arc efficiency was calculated as the ratio of net heat flux to the input power. The heat distribution parameter is found to be a function of current and independent of speed whereas the arc efficiency is independent of both current and travel speed. The value of arc efficiency determined in this study compares well with the data of previous studies, confirming the viability of the simulation method. Copyright © 2011 Inderscience Enterprises Ltd.

Notes:

cited By (since 1996)1

Cite this Research Publication

S. Arul and R. Sellamuthu, “Application of a simplified simulation method to the determination of arc efficiency of gas tungsten arc welding (GTAW) and experimental validation”, International Journal of Computational Materials Science and Surface Engineering, vol. 4, pp. 265-280, 2011.