Influence of welding speed and power on residual stress during gas tungsten arc welding (GTAW) of thin sections with constant heat input: A study using numerical simulation and experimental validation

Comparison of weld characteristics between longitudinal seam and circumferential butt weld joints of cylindrical components

“…The thermo-mechanical properties such as Young's modulus, thermal expansion coefficient and yield stress were used. The above described material properties of AISI 304 SS were taken from Ravisankar et al [26] and the temperature dependent thermo-physical and thermo-mechanical properties are shown in Figs. 4 and 5 respectively.…”

“…4 and 5 respectively. The temperature independent material properties and constants such as convective heat transfer coefficient, Stefan-Boltzmann constant, emissivity and Poisson's ratio considered in the present investigation are listed in Table 2 [26]. During welding process, change in state occurs in between solidus and liquidus temperatures.…”

“…The same finite element model used in the thermal analysis was employed here. For the investigated AISI 304 SS, solid-state phase transformation is negligible [26]. Therefore, the total strain (ε) can be expressed as ε = ε e + ε p + ε th…”

A Review on Parameters Optimization of Tungsten Inert Gas Welding using Taguchi

“…Ravisankar, et.al [1], evaluated the temperature distribution and residual stresses for a GTAW circumferential butt joint of AISI 304 stainless steel using numerical simulation. For evaluation of weld induced residual stresses, the analysis of heat source fitting was carried out with heat inputs ranging from 200 to 500 J/mm to arrive at optimal heat input for obtaining proper weld penetration and heat affected zone (HAZ).…”

Experimental and Analytical Investigation of Thermal Parameters Developed in High Carbon Steel Joints Formed by Gta Welding

“…The solid phase and melted region has been studied by macrograph to investigate effect of heat source. Ravisankar A. et al 16 evaluated temperature distribution based on numerical simulation and experimental work of AISI 304 stainless steel joints prepared by GTAW. Heat source data fitting has been carried out to optimize the heat input at particular electrode velocity in heat affected zone (HAZ).…”