| 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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Lesselier, Dominique
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (22/22 displayed)
- 2024Identification and characterization of damaged fiber-reinforced laminates in a Bayesian frameworkcitations
- 2024GPR for Tree Roots Reconstruction under Heterogeneous Soil Conditions
- 2023Identification and characterization of damaged fiber-reinforced laminates in a Bayesian framework
- 2022Data fusion and non-destructive testing of damaged fiber-reinforced laminates
- 2021Ultrasonic array imaging of nuclear austenitic V-shape welds with Inhomogeneous and unknown anisotropic propertiescitations
- 2021A wavelet-based contrast source inversion methodcitations
- 2019Adaptive TFM imaging in anisotropic steels using optimization algorithms coupled to a surrogate model
- 2019Fast 3D model dedicated to thermographic inspections of planar composite structures
- 2016On recent advances and issues ahead in modeling and electromagnetic imaging of perturbed composite laminates
- 2016A new optimization method for solving electromagnetic inverse scattering problems
- 2015MUSIC imaging method for low-high frequency inspection of composite multi-layerscitations
- 2015Subspace-based optimization method for reconstructing 3-D scatterers in anisotropic laminates
- 2015Impedance of an induction coil accounting for the end-effect in eddy current inspection of steam generator tubes
- 2015Electromagnetic MUSIC imaging and 3-D retrieval of defects in anisotropic, multi-layered composite materials
- 2014MUSIC imaging method for low-high frequency inspection of composite multi-layerscitations
- 2014Fast calculation of electromagnetic scattering in anisotropic multilayers and its inverse problem
- 2014Low-high frequency inspection of composite multi-layers and MUSIC-type electromagnetic imaging
- 2012Eddy current modeling of narrow cracks in planar-layered metal structurescitations
- 2008New discretisation scheme based on splines for volume integral method: Application to eddy current testing of tubescitations
- 2008Hybridization of volumetric and surface models for the computation of the T/R EC probe response due to a thin opening flawcitations
- 2008Multi-static response of spherical scatterers and the back-propagation of singular fieldscitations
- 2007Volumetric and surface flaw models for the computation of the EC T/R probe signal due to a thin opening flaw
Places of action
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article
Ultrasonic array imaging of nuclear austenitic V-shape welds with Inhomogeneous and unknown anisotropic properties
Abstract
The quality of ultrasound images of welds is highly penalized by the dendritic structure of the material that forms during cooling. The image of a flaw is all the more degraded as a reliable description of such a medium is most of the time not possible, due to the poor knowledge on the weld at time of inspection. In a previous work, we demonstrated the efficiency of an optimization procedure to correct a degraded Total Focusing Method (TFM) image of a point-like reflector inside a homogeneous weld, with uniaxial grain orientation. In the present contribution, this procedure is extended to more realistic welds with a varying grain orientation, and it is evaluated with a 64-element array emitting at 5 MHz on stainless steel weld samples featuring side-drilled holes of 1 mm diameter. A first proof of concept with simulated echoes, and then two experiments show that defects that were hardly visible on TFM images before the optimization are now well reconstructed and with positioning errors inferior to 1 mm.