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Gas-Tungsten Arc Welding of Dissimilar Aluminum Alloys With Nano-Treated Filler
, 2021Arc welding of dissimilar aluminum alloys is in high demand in industry but often challenging in practice. Dissonant material properties between the base metals often lead to solidification cracking in the weld metal upon cooling.
Narayanan Murali +5 more
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Neurofuzzy control of weld penetration in gas tungsten arc welding [PDF]
Science and Technology of Welding and Joining, 2003 AbstractIn the present paper, a method using the surface geometrical parameters of the weld pool to control the weld penetration is developed. Because detection of the weld penetration is problematic and the back side maximum weld width can reflect weld penetration to some extent, a model describing the relationship between the weld pool surface ...
J. Gao, Chuansong Wu
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Arc power and efficiency in gas tungsten arc welding of aluminium
Science and Technology of Welding and Joining, 2005A calorimetric study of gas tungsten arc welding of aluminium is described. The present study comprised experiments in which autogenous welding runs were each made on a block of electrical conductor grade aluminium. The blocks were all approximately cubic in shape which, when combined with the high thermal conductivity of aluminium, ensured that their
Cantin, G M, Francis, John
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Determination of gas tungsten arc welding efficiencies
Experimental Thermal and Fluid Science, 1994A combined experimental/computational technique for the estimation of gas tungsten arc welding (GTAW) efficiencies under quasi-steady conditions is presented. The instantaneous measurements of the weld pool length ahead of and behind the electrode are obtained from digitized free surface images, using a pulsed laser vision system.
C. Franche, Pradip Dutta, Yogendra Joshi
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Modeling of Transport Phenomena in Gas Tungsten Arc Welding Arc
Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 2012This paper developed a mathematical model to simulate the transport phenomena in the arc plasma of a gas tungsten arc welding (GTAW) process. The arc model simulated the electromagnetic field in three regions — cathode, arc plasma, and anode; and heat transfer and fluid flow in the arc region.
J. Pallis, J. Hu, X. Yang
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Numerical simulation of the arc pressure in gas tungsten arc welding
Journal of Materials Processing Technology, 1996Abstract A two-dimensional axisymmetric numerical model has been developed to describe the heat transfer and fluid flow in the gas tungsten welding arc. The electrode-tip geometry is considered in the model and the cathode and arc column regions are included in the solution of the current continuity equation.
Y.W. Shi, H.G. Fan
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Welding structures in gas tungsten arc-welded Zircaloy-4
Metallography, 1982Abstract Microstructures were obtained by the gas tungsten arc welding of tubes to end caps in Zircaloy-4 fuel elements and analyzed metallographically. This article characterizes the structures and the relationships between the operative variables and structural elements and properties.
María Eugenia Saggese +1 more
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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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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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