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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Carin, Muriel
Processes and Engineering in Mechanics and Materials
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023A novel apparatus dedicated to the estimation of the thermal diffusivity of metals at high temperaturecitations
- 2023A novel hydraulic bulge test in hot forming conditionscitations
- 2022Conventional Meso-Scale and Time-Efficient Sub-Track-Scale Thermomechanical Model for Directed Energy Depositioncitations
- 2022Numerical modeling for large-scale parts fabricated by Directed Energy Depositioncitations
- 2018Design and development of an induction furnace to characterize molten metals at high temperatures
- 2018Investigation of the progressive hot die stamping of a complex boron steel part using numerical simulations and Gleeble testscitations
- 2014A model comparison to predict heat transfer during spot GTA weldingcitations
- 2014Influence of a pulsed laser regime on surface finish induced by thedirect metal deposition process on a Ti64 alloycitations
- 2013A model comparison to predict heat transfer during spot GTA weldingcitations
- 2013A model comparison to predict heat transfer during spot GTA weldingcitations
- 2012Influence of various process conditions on surface finishes induced by the direct metal deposition laser technique on a Ti-6Al-4V alloycitations
- 2012Surface Finish Issues after Direct Metal Deposition
- 2012Influence of various process conditions on surface finishes induced by the direct metal deposition laser technique on a Ti–6Al–4V alloycitations
- 20122D longitudinal modeling of heat transfer and fluid flow during multilayered
- 20122D longitudinal modeling of heat transfer and fluid flow during multilayered
- 20113D heat transfer model of hybrid laser Nd : Yag-MAG welding of a S355 steel and experimental validationcitations
- 20113D heat transfer model of hybrid laser Nd : Yag-MAG welding of a S355 steel and experimental validationcitations
- 2011Analysis of hybrid Nd:Yag laser-MAG arc welding processes.citations
- 2011Analysis of hybrid Nd:Yag laser-MAG arc welding processes.citations
- 2011Estimation of a source term in a quasi steady two-dimensional heat transfer problem: application to an electron beam weldingcitations
- 2006Thermo-mechanical modelling for the opening of electron-beam welded jointscitations
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article
A model comparison to predict heat transfer during spot GTA welding
Abstract
The present work deals with the estimation of the time evolution of the weld fusion boundary. This moving boundary is the result of a spot GTA welding process on a 316L stainless steel disk. The estimation is based on the iterative regularization method. Indeed, the three problems: direct, in variation and adjoint, classically associated with this method, are solved by the finite element method in a twodimensional axisymmetric domain. The originality of this work is to treat an experimental estimation of a front motion using a model with a geometry including only the solid phase. In this model, the evolution of this solid domain during the fusion is set with the ALE moving mesh method (Arbitrary Lagrangian Eulerian). The numerical developments are realized with the commercial code COMSOL MULTIPHYSICS coupled with the software MATLAB . The estimation method has been validated in a previous work using theoretical data ([1]). The experimental data, used here for this identification are, temperatures measured by thermocouples in the solid phase, the temporal evolution of the melt pool boundary observed at the surface by a fast camera and the maximal dimensions of the melted zone measured on macrographs. These experimental data are also compared with numerical results obtained from a heat and fluid flow model taking into account surface tension effects, Lorentz forces and the deformation of the melt pool surface under arc pressure.