Results 221 to 230 of about 19,220 (254)
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Adaptive voltage control of gas tungsten arc welding
International Journal of Modelling, Identification and Control, 2006An adaptive control based on fuzzy logic has been implemented for Gas Tungsten Arc Welding (GTAW). This adaptive controller eliminates the problems frequently experienced with traditional Automatic Voltage Control (AVC) systems, which do not adequately perform for all operational conditions because of the non-linear relationship between the arc voltage,
Daniel A. Hartman +3 more
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Machine Vision Recognition of Weld Pool in Gas Tungsten Arc Welding [PDF]
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 1995 The weld pool and its surrounding area can provide a human welder with sufficient visual information to control welding quality. Seam tracking error and pool geometry can be recognized by a skilled human welder and then utilized to adjust the welding parameters.
Y M Zhang, R Kovacevic
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Robust control of gas tungsten arc welding system
Chinese Journal of Mechanical Engineering (English Edition), 2007The robust control law for gas tungsten arc welding dynamic process,which is a typical sampled-data system and full of uncertainties,is presented.By using the Lyapunov second method, the robust control and robust optimal control for a class of sampled-data systems whose underlying continuous-time systems are subjected to structured uncertainties are ...
Chen Shan-ben, WU Junfeng
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Gas-tungsten arc welding of AZ91 magnesium alloy
Journal of Alloys and Compounds, 2011Abstract The gas-tungsten arc (GTA) welding behaviors of the commercial AZ91 magnesium alloy were examined in terms of process efficiencies and microstructure characteristics. This study focused on the effects of GTA welding process parameters (like welding current in the range of 100/300 A and welding speed in the range of 3.33/13.33 mm/s) on energy
M. Mróz, K.N. Braszczyńska-Malik
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A theoretical model for gas metal arc welding and gas tungsten arc welding. I.
Journal of Applied Physics, 1998A recently developed theory for predicting arc and electrode properties in gas metal arc welding (GMAW) has been generalized to include arc–electrode interfaces, variation of surface tension pressure with temperature, Marangoni forces and handling of weld pool development in stationary gas tungsten arc welding (GTAW).
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An investigation on residual stresses in gas tungsten arc welding
PAMM, 2018AbstractIt is known that the gas tungsten arc welding (GTAW) generates high and localised heat gradients in the welded components, leading to the formation of weld bead and residual stresses that affect their fatigue life. In this work, a finite element model of GTAW is presented to estimate the temperature and stress induced by GTAW.
An Danh Nguyen +2 more
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Characterization of welding arc and weld pool formation in vacuum gas hollow tungsten arc welding
Journal of Materials Processing Technology, 2013Abstract An experimental method is suggested to obtain the effective arc radii for various welding conditions in vacuum gas hollow tungsten arc welding. The irradiance distribution of welding arc next above the anode workpiece is obtained by applying Abel inversion algorithm to the CCD arc image, and then used to determine the distribution of arc ...
Cho, DW Cho, D. W. +2 more
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1993
Abstract The melting temperature necessary to weld materials in the gas-tungsten arc welding (GTAW) process is obtained by maintaining an arc between a tungsten alloy electrode and a workpiece. This article discusses the advantages and limitations and applications of the GTAW process.
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Abstract The melting temperature necessary to weld materials in the gas-tungsten arc welding (GTAW) process is obtained by maintaining an arc between a tungsten alloy electrode and a workpiece. This article discusses the advantages and limitations and applications of the GTAW process.
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2019
Gas tungsten arc welding (GTAW) utilises an intense electric arc formed between a non-consumable tungsten electrode and the workpiece to generate controlled melting within the weld joint. Essentially, the arc can be used as if it was an extraordinarily hot flame. The use of a tungsten electrode and inert gas mixtures makes the process very clean. It is
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Gas tungsten arc welding (GTAW) utilises an intense electric arc formed between a non-consumable tungsten electrode and the workpiece to generate controlled melting within the weld joint. Essentially, the arc can be used as if it was an extraordinarily hot flame. The use of a tungsten electrode and inert gas mixtures makes the process very clean. It is
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Arc Welding Processes: Gas Tungsten Arc Welding: Principle and System Components
2021This chapter presents the principle of tungsten inert gas (TIG) welding process. Components of TIG welding system and their role will be described. This process is also known as gas tungsten arc welding (GTAW) process. Further, fundamentals of heat generation, arc stability and arc efficiency of GTAW have also been elaborated.
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