| 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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Leclere, Quentin
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023On the estimation of the shear modulus of a honeycomb sandwich panel from X-ray mapping of its core
- 2022Wave correlation approaches to analyse 3D velocity fields: application to a honeycomb core composite panel
- 2022Acoustic Imaging using Distributed Spherical Microphone Arrays
- 2021Development of the Corrected Force Analysis Technique for laminated composite panelscitations
- 2020On the structural dynamics of laminated composite plates and sandwich structures; a new perspective on damping identificationcitations
- 2019Sparse acoustical holography from iterated Bayesian focusingcitations
- 2019INFLUENCE OF GRAIN MORPHOLOGY AND SIZE ON ULTRASONIC ATTENUATION IN POLYCRISTALLINE ISOTROPIC MATERIALS
- 2018Assessment of the apparent bending stiffness and damping of multilayer plates; modelling and experimentcitations
- 2018Spatial Patterning of the Viscoelastic Core Layer of a Hybrid Sandwich Composite Material to Trigger Its Vibro-Acoustic Performancescitations
- 2018Modeling, designing and measuring hybrid sandwich composite panels with optimized damping properties
- 2017Versatile hybrid sandwich composite combining large stiffness and high damping: spatial patterning of the viscoelastic core layercitations
- 2015Vibrational behavior of multi-layer plates in broad-band frequency range: comparisons between experimental and theoretical estimations
Places of action
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conferencepaper
INFLUENCE OF GRAIN MORPHOLOGY AND SIZE ON ULTRASONIC ATTENUATION IN POLYCRISTALLINE ISOTROPIC MATERIALS
Abstract
International audience ; EDF R&D carries out studies for many years in order to improve and quantify the performances of the ultrasonic NDT process implemented on nuclear power plants. The detection and sizing of defects in coarse grained materials is a very challenging issue related to the inspection of critical components of nuclear power plants. Indeed in coarse grained material, the scattering of the ultrasonic wave at grain boundaries is responsible for the high attenuation which highly degrades the detection performances. This unfavorable phenomenon is predominant where the mean grain size is comparable to the wavelength of the control. In this framework, EDF R&D has carried out studies on the simulation of the ultrasonic propagation in complex materials with the finite elements code ATHENA. 2D and 3D finite element modeling approaches of ultrasonic propagation have been implemented, combined with a description of the microstructure of coarse grain materials [1]. The aim of this study is to demonstrate that the integration of a relevant description of the microstructure of macroscopically isotropic grain materials in a numerical simulation is an efficient tool to predict the ultrasonic attenuation in those materials. In addition, the influence of grain morphology, size and orientation on the ultrasonic attenuation coefficient is studied. The simulation results are compared with theoretical models and experimental measurement performed on an isotropic polycrystalline material (coarse grain Ni-based alloy).