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Probing Reliability of Transport Phenomena Based Heat Transfer and Fluid Flow Analysis in Autogeneous Fusion Welding Process

Abstract : The transport phenomena based heat transfer and fluid flow calculations in weld pool require a number of input parameters. Arc efficiency, effective thermal conductivity, and viscosity in weld pool are some of these parameters, values of which are rarely known and difficult to assign a priori based on the scientific principles alone. The present work reports a bi-directional three-dimensional (3-D) heat transfer and fluid flow model, which is integrated with a real number based genetic algorithm. The bi-directional feature of the integrated model allows the identification of the values of a required set of uncertain model input parameters and, next, the design of process parameters to achieve a target weld pool dimension. The computed values are validated with measured results in linear gas-tungsten-arc (GTA) weld samples. Furthermore, a novel methodology to estimate the overall reliability of the computed solutions is also presented.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00517630
Contributor : Magalie Prudon <>
Submitted on : Wednesday, September 15, 2010 - 9:53:35 AM
Last modification on : Thursday, September 24, 2020 - 5:22:54 PM

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Swarup Bag, A. De. Probing Reliability of Transport Phenomena Based Heat Transfer and Fluid Flow Analysis in Autogeneous Fusion Welding Process. Metallurgical and Materials Transactions A, Springer Verlag/ASM International, 2010, 41 (9), pp.Pages 2337-2347. ⟨10.1007/s11661-010-0272-9⟩. ⟨hal-00517630⟩

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