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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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Nivard, Mariette
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2019Strain rate sensitivity of germanium-selenium glasses
- 2018Strain rate sensitivity of germanium-selenium glasses ; Sensibilité au taux de déformation des verres de chalcogénures au Ge-Se
- 2018Strain rate sensitivity of Ge-Se glasses
- 2018Strain rate sensitivity of germanium-selenium glasses
- 2018A Laser shocked induced densification of silica glass studied by both experience and molecular dynamic simulation.
- 2016Understanding of the mechanical and structural changes induced by alpha particles and heavy ions in the French simulated nuclear waste glasscitations
- 2015Plasticity at nanoindentation site in glass : a possible experimental benchmark for numerical modeling
- 2011Experimental and numerical investigation of plasticity in metallic glasses via reverse analysis
- 2011Size effect in metallic glasses characterized by nanoindentation and shear bands observations
- 2005The laser shock adhesion test (LASAT) for production control of thermally sprayed ceramic coatings
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conferencepaper
The laser shock adhesion test (LASAT) for production control of thermally sprayed ceramic coatings
Abstract
The adhesion strength of a ceramic coating deposited through direct spraying on a roughened substrate is a key issue in the manufacture of high-quality coatings on industrial components. The purpose of this work was to develop a rapid and discerning procedure for establishing adhesion level of a ceramic coating on a metallic substrate. The LAser Shock Adhesion Test, namely LASAT, was successfully applied to ceramic coatings with irradiation impact on the metallic side. Suitable parameters were found to determine the LASAT adhesion threshold using a standard Nd:YAG laser source. With a laser-irradiated area of several millimeters in diameter, it allowed assessment of the coating threshold on several areas of a coated plate sample. A control procedure for a qualitative assessment of coating adhesion was developed. This testing procedure could be easily used in industry, with possible location of the LASAT unit near to the spraying booth, for a direct production control on coated sample to improve the tracability of manufactured parts. Additional work was carried out to investigate a quantitative approach of the LASAT test to ceramic coating. The purpose was to simulate the shock wave propagation with the RADIOSS® code (a 3D software originally developed for car crash simulation). This code was implemented to calculate the velocity of the material and corresponding pressure throughout the substrate and the coating during the shock wave release (less than 2 ms). Experimental VISAR profiles ('Velocity Interferometer System for Any Reflector') were monitored in the straight direction of the laser-irradiated area on the rear side. These experimental signals (velocity measures) of the ceramic coating could be fitted and compared with a fairly good agreement with simulated profiles obtained by RADIOSS®. This modelling work was the first step towards a more comprehensive coating adhesion strength calculation in the future.