Numerical analysis of undercut defect mechanism in high speed gas tungsten arc welding
Abstract
A computational fluid dynamics model is developed to investigate undercut defect formation in high speed gas tungsten arc welding (GTAW) process. Double-ellipse arc shear stress model and modified double-ellipse arc heat source and arc pressure models are used, which are self-adaptive to weld pool surface evolution. The heat and mass transfer in weld pool and solidified weld bead profile are simulated and the undercut mechanism are discussed....
Paper Details
Title
Numerical analysis of undercut defect mechanism in high speed gas tungsten arc welding
Published Date
Oct 1, 2016
Volume
236
Pages
225 - 234
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