Estimation of Thermal Conductivity of Mild Steel Tungsten Inert Gas (TIG) Welding using Response Surface Methodology
Authors: Igbinake, A.O. And *Aliyegbenoma, C.O.
DOI Info: http://doi.org/10.5281/zenodo.15778105
ABSTRACT
Thermal conductivity is a measure of heat flow per second per unit area per temperature gradient. This study estimates the thermal conductivity of mild steel weld using the TIG welding process. The input parameters considered in this study were welding current, welding voltage and gas flow rate, while the measured responses were thermal conductivity. Twenty sets of experiment were performed using 5 specimens for each run. The plate samples were 60 mm long with a wall thickness of 10mm. The development of a second order quadratic model of the response surface methodology (RSM) to predict and optimize the thermal conductivity of TIG mild steel welds has been successfully established. With an optimum process parameter of 180A, 19V and 13l/min and thermal conductivity of 51.934J/(s. m. oC) with desirability function value of 91.5%.
Affiliations: Department of Production Engineering Faculty of Engineering, University of Benin, PMB 1154, Benin City, Nigeria.
Keywords: Thermal, Conductivity, Desirability, Welding, Voltage, Current, Steel
Published date: 2025/06/30
