Application of Differential Transform Method for Estimating Thermal Cycle Developed in GTA Welding of High Carbon Steel Joints

Abstract:

This article reveals a detailed study of temperature cycle formed during Gas Tungsten Arc welding of high carbon steel (AISI 1090) butt joints. Experimental work has been carried out to estimate the temperature distribution along fusion boundary to longitudinal direction of the weldment by mounting thermocouples on the plate along with Data Acquisition System. Heat flux distribution due to moving point heat source has been demonstrated by implementing Gaussian surface heat flux and Angular Torch model. Cooling rate has predicted by application of Adams cooling rate equation. Conduction-convection phenomena plays dominant role for evaluating heat loss from the weld joint and Differential Transform Method (DTM) has been applied to judge non-dimensional temperature distribution. Analytical studies has shown well agreement with experimental temperature distribution.

• Periodical: International Journal of Engineering Research in Africa (Volume 14)
• Pages: 37-48
• DOI: https://doi.org/10.4028/www.scientific.net/JERA.14.37
• Online since: March 2015
• Authors: Jaideep Dutta*, S. Narendranath, Aleksandr Zhilin
• Keywords: Butt Joint, Cooling Rate, Differential Transform Method, Gas Tungsten Arc Welding, Temperature Cycle

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