| People | Locations | Statistics |
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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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Courant, Bruno
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Relationship between microstructure, and residual strain and stress in stainless steels in-situ alloyed by double-wire arc additive manufacturing (D-WAAM) processcitations
- 2023Residual Stress Gradient Built in X40CrMoVN16-2 Austenitic Steel Cube Manufactured by Laser Powder Bed Fusioncitations
- 2022Investigation of microstructure, hardness and residual stresses of wire and arc additive manufactured 6061 aluminium alloycitations
- 2019Development of low pressure cold sprayed copper coatings on carbon fiber reinforced polymer (CFRP)citations
- 2013Prediction and analytical description of single laser tracks geometry. Characterization and analysis of 316L stainless steel microstructure
- 20123D finite element simulation to predict the induced thermal field in case of laser cladding process and half cylinder laser clad
- 20123D finite element simulation to predict the induced thermal field in case of laser cladding process and half cylinder laser clad
- 2012Direct laser fabrication process with coaxial powder projection of 316L steel. Geometrical characteristics and microstructure characterization of wall structurescitations
- 2012Prediction and analytical description of the single laser track geometry in direct laser fabrication from process parameters and energy balance reasoningcitations
- 2012Analysis and prediction of single laser tracks geometrical characteristics in coaxial laser cladding processcitations
- 2011Applied multi-pulsed laser in surface treatment and numerical–experimental analysiscitations
- 2006Tribological performance of α-Fe(Cr)-Fe2B-FeB and α-Fe(Cr)-h-BN coatings obtained by laser meltingcitations
- 2005Structure and hardness of titanium surfaces carburized by pulsed laser melting with graphite additioncitations
Places of action
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article
Applied multi-pulsed laser in surface treatment and numerical–experimental analysis
Abstract
International audience ; This paper presents a comparison between simulation and experimental results of the melting process of metallic material by a pulsed laser source Nd–YAG. The simulations of temperature and velocity fields of melted material were done by solving the transient heat transfer and fluid-flow equations. Variations of the thermophysical properties were considered. Furthermore, the model included the effects of the surface-tension gradient on the fluid surface and the buoyancy force. The simulation was useful in improving our understanding of the phenomena occurring in the treated material. Using a laser triangulation sensor, an experimental study was also conducted on the surface profile of the melted zones to seek a relationship between the so-called keyhole effect and the laser triangulation measurements. The keyhole effect induced strong surface deformations and often formed cavities, which were undesirable in the surface treatment process. The laser power, energy density, and treatment duration could be optimized to prevent the keyhole effect. The predicted laser melted zone (LMZ) morphology was in good agreement with the corresponding experimental measurements for various irradiation conditions, as long as the keyhole effect did not occur.