A5043327229- Reservoir Engineering and Simulation Methods
- Engineering Structural Analysis Methods
- Hydrocarbon exploration and reservoir analysis
- Microstructure and Mechanical Properties of Steels
- Fatigue and fracture mechanics
- High Temperature Alloys and Creep
- Political and Social Issues
- Material Properties and Failure Mechanisms
- Modeling and Simulation Systems
- Drilling and Well Engineering
- Real-time simulation and control systems
- Hydraulic Fracturing and Reservoir Analysis
- Simulation Techniques and Applications
- Hydraulic and Pneumatic Systems
- Mechanical Failure Analysis and Simulation
- CO2 Sequestration and Geologic Interactions
- Mechanical stress and fatigue analysis
- Concrete Corrosion and Durability
- European history and politics
- Electromagnetic Launch and Propulsion Technology
- Cardiovascular Effects of Exercise
- Metal Alloys Wear and Properties
- European Socioeconomic and Political Studies
- Magnesium Oxide Properties and Applications
- Layered Double Hydroxides Synthesis and Applications
Total (United States)
2024
Total (France)
2016-2022
Territoires, Villes, Environnement & Société
2006-2017
Laboratoire d'Annecy-le-Vieux de Physique Théorique
2017
Électricité de France (France)
2005-2012
Laboratoire de Mécanique des Sols, Structures et Matériaux
2006-2010
University of Liège
2003-2007
École nationale supérieure d'arts et métiers
2006
Centre National de la Recherche Scientifique
2006
Laboratoire d'Étude des Microstructures et de Mécanique des Matériaux
2005
EDF operates a nuclear power generation fleet made up of 56 reactors. This contains 24 reactors designed as double-walled concrete containment building. The inner vessel has no metallic liner and is prestressed reinforced to withstand severe accident, in terms mechanical sealing behaviour. tightness the tested every 10 years, by carrying out pressurization test measuring leak rate. rate required be below regulatory threshold continue operation building for next ten years. Ageing due drying,...
ABSTRACT A methodology is proposed in this paper to compute local probability of fracture a representative volume element from microstructural and fractographic information. microscale approach reported for cleavage modelling bainitic reactor pressure vessel steel. fine metallographic micro‐mechanical characterization has been performed. Morphological information used generate realistic three‐dimensional (3D) aggregates suitable calibration process set up identify an accurate crystal...
When YBCO single domains are subjected to a variable magnetic field, the motion of vortices may give rise significant temperature increase and degradation superconducting properties. We have experimentally investigated such effects in bulk melt-processed domains. Several sensors, pick-up coil two Hall probes were placed against surface monolithic pellet. Data simultaneously recorded during application ac fields various amplitudes, either with or without pre-existing dc trapped flux. The...
The present study describes a multiscale representation of mechanisms involved in brittle fracture french Reactor Pressure Vessel (RPV) steel (16MND5 equ. ASTM A508 Cl.3) at low temperatures. Attention will be focused on the stress heterogeneities inside ferritic matrix during plastic straining, which is considered as critical for further micromechanical approach fracture. This tuned experimental results [1]. Modeling involves description glide, mean field (MF) model and realistic...
Most safety related valves in EDF’s nuclear plant must prove their ability to sustain thermal shocks of approximately 240K amplitude. This paper evaluates the simulation a globe valve tested for shocks. Since physical test campaign showed inadequate internal sealing, focuses on residual deformation hard alloy, planar seat, welded successive body designs. is result loadings first induced by welding process, then fluid flow inside valve. A chain 3D simulations successively computes:...
Abstract In the current era of big data and machine learning, a strong focus exists on prediction classification. industrial applications, however, many important questions are not about or classification; rather, they causal: if I change A, what will happen to B? Traditional regression techniques such as learning optimize predictions based correlations seen in robust tools for epidemiologists biostatisticians when evaluating efficacy new treatments medications using observational data....
Advances in computational mechanics allow to improve safety and reliability of many components used nuclear applications. Although valves are numerous critical for considerations, difficulties arise that highly complicate the use numerical methods qualification testing. Thus, mainly tested by experimental simulation representative conditions, which is sufficient prevent failures, but do not help comprehensively analyze mechanisms failure. This paper attends demonstrate efforts made at EDF...
Préalablement à leur acquisition, les robinets installés dans centrales nucléaires font l’objet d’une démonstration de aptitude endurer des chocs thermiques amplitude 255 C, sollicitation majorante conditions normales d’exploitation. Afin mieux cerner la validité démonstrations fondées sur simulations numériques, nous confrontons l’essai en vraie grandeur d’un robinet soupape diamètre nominal 150 mm avec sa simulation numérique. Cet article est focalisé le comportement l’assemblage boulonné...
Abstract For tight reservoirs where hydraulic fracturing is required to enable sufficient fluid mobility for economic production, it critical understand the placement of induced fractures, their connectivity, extent, and interaction with natural fractures within system. Hydraulic fracture initiation propagation mechanisms are greatly influenced by effect stress state, rock fabric pre-existing features (e.g. faults, weak bedding/laminations). A system can dictate mode, orientation size...