A5080900226- Advanced X-ray and CT Imaging
- Non-Destructive Testing Techniques
- Ultrasonics and Acoustic Wave Propagation
- Geophysical Methods and Applications
- Medical Imaging Techniques and Applications
- Digital Radiography and Breast Imaging
- Welding Techniques and Residual Stresses
- Risk and Safety Analysis
- Nuclear Engineering Thermal-Hydraulics
- Underwater Acoustics Research
- Nuclear Physics and Applications
- Radiation Shielding Materials Analysis
- Graphite, nuclear technology, radiation studies
- Marine animal studies overview
- Effects of Environmental Stressors on Livestock
- Bat Biology and Ecology Studies
- Nuclear and radioactivity studies
- Fatigue and fracture mechanics
- 3D Surveying and Cultural Heritage
- Structural Health Monitoring Techniques
- Optical measurement and interference techniques
- Nuclear Materials and Properties
- Acoustic Wave Phenomena Research
- Probabilistic and Robust Engineering Design
- Electrical Fault Detection and Protection
Territoires, Villes, Environnement & Société
2015-2023
Chimie Moléculaire, Macromoléculaire, Matériaux
2020
Électricité de France (France)
2005-2020
Laboratoire de Mécanique des Sols, Structures et Matériaux
2016
CEA LETI
2009
Institut polytechnique de Grenoble
2009
Federal Institute For Materials Research and Testing
2009
Simulation results of the eddy current modeling code ECSIM on an Inconel tube mock‐up were compared to existing experimental inner and outer circumferential notches inspected at two different frequencies, observing influence a geometrical effect such as thickness. The EC probe used for this setup represented number difficulties, ferrite core excitation coil differential pickup arrangement with small diameter. instructive, showing that special care must be taken generate highly symmetrical...
Generating 2D noise with local, space-varying spectral characteristics is vital where random fields spatially heterogeneous statistical proper-ties are observed and need to be simulated. A realistic, non-stationary generator relying on experimental data presented. That desired in areas such as photography radiography. For example, before performing actual X-ray imaging practice, output imag-es simulated assess improve setups. that purpose, realistic film modelling crucial because downgrades...
Computed radiography (CR) using phosphor imaging plate detectors is taking an increasing place in Radiography Testing. CR uses similar equipment as conventional except that the classical X-ray film replaced by a numerical detector, called image (IP), which made of photostimulable layer and read scanning device through photostimulated luminescence. Such digital has already demonstrated important benefits terms exposure time, decrease source energies thus reduction radioprotection area besides...
The ultrasonic inspection of polycrystalline media remains a challenge. high noise levels due to the interaction between wave and microstructure limit efficiency classical techniques detect defect in coarse grain structure. aim this work is reduce influence multiple scattering order increase information obtained from defect. technique introduced presentation based on array probes for acquisition medium's response matrix by full capture, after which filter random theory applied. Here used...
The basic principle of ultrasound is to relate the time flight a received echo location reflector, assuming known and constant velocity sound. This assumption breaks down in austenitic welds, which microstructure with large oriented grains induces local differences resulting deviations ultrasonic beam. inspection problem further complicated by scattering at grain boundaries, introduces structural noise attenuation. Embedding material information into imaging algorithms usually improves image...
In safety-critical industries, including the nuclear sector, ultrasonic testing (UT) of welded components is an area continuous improvement. We have collaborated on developing advanced UT simulation tools to address challenges in monitoring and imaging defects near or within a weld bevel. These tools, integrated into CIVA software platform, use hybrid approaches combining ray models finite elements (FE) accurately simulate wave propagation diffraction phenomena both 2D 3D inspection...
A new method for industrial radiography is presented to assess image quality objectively. The assessment performed by a modelled observer developed interpret radiographic images in order rate the detectability of structural defects. For purpose qualifying NDE procedures, computational tools simulate image, but should additionally automatically associated instead relying on human interpretation. Channelized Hotelling Model Observer (CHO) approach, originally medical imaging, here applications...
We present a cross-cutting review of three on-going Horizon 2020 projects (ADVISE, NOMAD, TEAM CABLES) and one already finished FP7 project (HARMONICS), which address the reliability safety-relevant components systems in nuclear power plants, with scope ranging from pressure vessel primary loop to safety-critical software electrical cables. The paper discusses scientific challenges faced beginning achievements made throughout projects, including industrial impact lessons learned. Two...
The purpose of the 2014 WFNDEC RT benchmark study was to compare predictions various models radiographic techniques, in particular those that predict contribution scattered radiation. All calculations were carried out for homogenous materials and a mono-energetic X-ray point source energy range between 100 keV 10 MeV. include best physics approach available considering electron binding effects. Secondary effects like fluorescence bremsstrahlung production be taken into account if possible....