| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Dorval, Vincent
CEA LIST
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Multi-modal characterization of ultrasonic bulk wave properties in heterogeneous textured media through finite element computations
- 2023Determining ultrasonic propagation effective properties in complex heterogeneous media through microstructure-scale simulationcitations
- 2022FEM-based simulation tools for ultrasonic concrete inspectioncitations
- 2015Simulation of the UT inspection of planar defects using a generic GTD-Kirchhoff approachcitations
- 2013Modeling ultrasonic noise and attenuation in elongated duplex polycrystalline materials
- 2013Generic GTD-kirchnoff scattering model for the ultrasonic response of planar defects
- 2013Characterisation of ultrasonic structural noise in multiple scattering media using phased arrayscitations
- 2012Modelling of the ultrasonic propagation in polycrystalline materials
- 2009Modeling of the ultrasonic propagation in a scattering metallurgic structure, application to NDT
Places of action
| Organizations | Location | People |
|---|
thesis
Modeling of the ultrasonic propagation in a scattering metallurgic structure, application to NDT
Abstract
Scattering phenomena can interfere with the ultrasonic non destructive testing of certain materials. It occurs for example in the testing of certain types of steels used in nuclear power plants, or of titanium alloys used in aeronautics. The scattering of ultrasonic waves by the microstructure of those materials induces structural noise and attenuation, which can have a significant impact on detection performances. This thesis deals with the modeling and computing of those phenomena. A model is used to determine the scattering properties of a metal, based on its microstructure. This model was adapted to different categories of metals.A method to compute structural noise based on this model was developed. It relies on the pencil method to perform semi-analytical computations of tridimensional ultrasonic fields. An original approach is used to limit the time necessary to compute noise signal. The computation is based on outputs of the model. This approach is based on the single scattering approximation. Noise signals computed using this method were compared to experimental results. Those comparisons confirm the relevance of the method. They also illustrate the importance of interference phenomena in structural noise. A second computation method that takes into account multiple scattering has been studied. It is based on a Monte-Carlo method applied to the radiative transfer theory.