Results 181 to 190 of about 2,791 (220)
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Process stability for GTAW-based additive manufacturing
Rapid Prototyping Journal, 2019Abstract Purpose Traditional gas tungsten arc welding (GTAW) and GTAW-based wire and arc additive manufacturing (WAAM) are notably different. These differences are crucial to the process stability and surface quality in GTAW WAAM. This paper addresses special characteristics and the process control method of GTAW WAAM.
Xiaolong Wang +3 more
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Adaptive Control of Aluminum Alloy GTAW Process
2010 International Conference on Electrical and Control Engineering, 2010Visual sensing and adaptive control were combined in aluminum alloy pulse gas tungsten arc welding(GTAW) to control the penetration. The property of aluminum alloy GTAW was analyzed firstly. Stochastic system theory was used in the welding process, and the stochastic system model between the welding parameters and welding pool geometric parameters was ...
Wang Jianjun, Gu Yongjie
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Comparison of SMAW and GTAW Welding Properties
Mechanics Exploration and Material InnovationLow carbon steel is a type of welding with good formability, machinability, hardenability, and weldability. It can be welded without preheating or postheating processes. Notch strength and sensitivity to weld cracking are the factors that influence the weldability of low carbon steel. SMAW and GTAW welding techniques were applied in this study.
Zul Afriansyah +2 more
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Numerical definition of an equivalent GTAW heat source
Journal of Materials Processing Technology, 2013Abstract The aim of this paper is to present a new numerical heat source for gas tungsten arc welding (GTAW) simulation. This source is described as a homogeneous thermal flux which is defined by a power P distributed in a disk the radius of which is R : it enables the main dimensions of the weld bead and the evolution in temperature in the solid ...
François Pichot +3 more
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A Model-Free Adaptive Control of Pulsed GTAW
2007A closed-loop system is developed to control the weld pool geometry, which is specified by the backside weld width. The welding current and speed are selected as the control variables. A MISO ARX model is used to model this dynamic process. Because of uncertainties in the GTAW process, it is very difficult to design an effective control scheme by ...
F. L. Lv, S. B. Chen, S. W. Dai
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Dynamic Modelling of Full Penetration Process in GTAW
1992 American Control Conference, 1992The primary objective of this paper is to provide a mathematical model of the full penetration process for the purpose of designing a control scheme. According to analysis of the practical welding, six typical welding conditions are selected to perform the dynamic experiments.
Yuming Zhang, Bruce L. Walcott, Lin Wu
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Comparative analysis of GTAW+SMAW and GTAW welded joints of duplex stainless steel 2205 pipe
International Journal of Pressure Vessels and Piping, 2022Liying Li +6 more
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