Open AccessJournal Article
Temperature fields produced by traveling distributed heat sources
Thomas W. Eagar,N. S Tsai +1 more
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TLDR
The solution of a traveling distributed heat source on a semi-infinite plate provides information about both the size and the shape of arc weld pools as mentioned in this paper, and the results indicate that both welding process variables (current, arc length and travel speed) and material parameters (thermal diffusivity) have significant effects on weld shape.Abstract:
The solution of a traveling distributed heat source on a semi-infinite plate provides information about both the size and the shape of arc weld pools. The results indicate that both welding process variables (current, arc length and travel speed) and material parameters (thermal diffusivity) have significant effects on weld shape. The theoretical predictions are compared with experimental results on carbon steels, stainless steel, titanium and aluminum with good agreement. 25 references, 23 figures, 1 table.read more
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Posted ContentDOI
Simulating Convective-Radiative Heat Sinks Effect by means of FEA-based Gaussian Heat Sources and Its Approximate Analytical Solutions for Semi-Infinite Body
Ninh Nguyen,John H. Chujutalli +1 more
TL;DR: In this paper, a complex 3D Gaussian heat source model, incorporating all three modes of heat transfer, was developed as an extension of the Goldak heat source, and the approximate transient analytical solutions for this 3D moving heat source were derived and numerically benchmarked with the available measured temperature and weld pool geometry data.
Journal ArticleDOI
Simulation Aided Process Development with Multi-Spot Strategies in Laser Powder-Bed Fusion
Journal ArticleDOI
Analytical Solutions for Moving Elliptical Paraboloid Heat Source in Semi-Infinite Plate
TL;DR: An attempt has been made in this paper to find out the trainsent temperature distribution on the welded plates through analytical as well as numerical method considering double elliptic paraboloid moving heat source volume.
Dissertation
Investigation of in-situ alloying grade 23 Titanium with Copper by Selective Laser Melting Process for biomedical applications
TL;DR: Thesis (Master of Engineering: Mechanical Engineering) as mentioned in this paper, Central University of Technology, Free State, South Africa, USA, 6th semester, 2019, 11.30.2018
References
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Journal ArticleDOI
Heat treating and melting material with a scanning laser or electron beam
H. E. Cline,T. R. Anthony +1 more
TL;DR: In this paper, a thermal analysis for laser heating and melting materials is derived for a Gaussian source moving at a constant velocity, where the resulting temperature distribution, cooling rate distribution, and depth of melting are related to the laser spot size, velocity, and power level.
Journal ArticleDOI
Heat Intensity and Current Density Distributions at the Anode of High Current, Inert Gas Arcs
TL;DR: In this article, heat and current distributions at the anode of high current arcs in inert gas atmospheres were determined experimentally, and the experimental method consisted of splitting anode, measuring the heat flux and the current to one of the sections as a function of arc position relative to the splitting plane, and calculating therefrom the distribution functions.
Journal ArticleDOI
Analysis of Electrode Phenomena in the High-Current Arc
J. D. Cobine,E. E. Burger +1 more
TL;DR: In this article, the authors made an analysis of the phenomena at the electrodes of a high-current short-time arc and showed that the input power density to the anode spot is in the range 5×104 to 1×106 watts/cm2.
Convection in arc weld pools
TL;DR: In this paper, a mathematical model was developed to account for convection and temperature distributions in stationary arc weld pools driven by buoyancy, electromagnetic and surface tension forces, and it was shown that these forces dominate the flow behavior.
Effect of Selenium on GTAW Fusion Zone Geometry
C.R. Heiple,J.R. Roper +1 more
TL;DR: In this article, small additions of selenium to 21-6-9 stainless steel dramatically increase the depth/width ratio of bead-on-plate welds, which is consistent with a model for control of weld fusion zone geometry.