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Academic literature on the topic 'Caractérisation multi-Physiques'
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Journal articles on the topic "Caractérisation multi-Physiques"
Simon, François-Xavier, Julien Guillemoteau, Guillaume Hulin, Joachim Rimpot, Julien Thiesson, and Alain Tabbagh. "De nouvelles perspectives pour les applications des méthodes électromagnétiques basse fréquence en archéologie." Archimède. Archéologie et histoire ancienne 7 (June 9, 2020): 272–82. http://dx.doi.org/10.47245/archimede.0007.act.14.
Full textCourivaud, Jean-Robert, Laurent del Gatto, Kamal El Kadi Abderrezzak, Christophe Picault, Mark Morris, and Stéphane Bonelli. "Le projet Overcome : comprendre et modéliser les processus d’érosion par surverse des digues et barrages en remblai constitués de matériaux grossiers à granulométries étalées." Revue Française de Géotechnique, no. 178 (2024): 6. http://dx.doi.org/10.1051/geotech/2024009.
Full textSamet, Naïm, Antoine Valentin, Quentin Julien, Fan Zhang, and Hélène Petitpré. "L’intelligence artificielle au service de la caractérisation des matériaux (traitements thermiques et contraintes résiduelles)." e-journal of nondestructive testing 28, no. 9 (September 2023). http://dx.doi.org/10.58286/28462.
Full textDissertations / Theses on the topic "Caractérisation multi-Physiques"
Kerdja, Youcef. "Caractérisation 3D et modélisation multi-échelle des matériaux actifs de batteries." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALI033.
Full textFour NMC type materials having the same chemical composition (LiNi1/3Mn1/3Co1/3O2) but different microstructures were synthesized and then used as positive electrodes to probe the impact of the microstructure over their electrochemical performances. FIB-SEM tomography was used to get 3D images of the synthesized materials, compute their ionic tortuosity and link the results to the observed electrochemical performances. 2D microscopy images were also obtained on the four materials to go beyond tortuosity computation and realize multi-physics simulations at the microstructure scale on real electrodes. To that end, an electrochemical model at the microstructure level has been developed. This model allows the visualization of the electrochemical kinetics’ as well as lithium liquid and solid diffusion’s influences over the global battery capacity and lithiation heterogeneities at the microstructure level. This study was performed, via a sensitivity analysis of the material physical properties, on a ‘template microstructure’ and allowed us to understand and quantify the different influences’ mechanism and the competition between them over the characteristics of the battery at multiple scales. After that, the developed model was used to simulate galvanostatic discharges on two of the previously extracted 2D microstructures. These simulations allowed us to get a real-time visualization of the local current density as well as of the overpotential at active material-electrolyte interface. The real-time visualization helped us to explain how two NMC type materials having the same chemical composition, but different microstructures led to different discharge capacities
Fantou, Alexandre. "Étude multi-physique et multi-échelle de la réaction d'hydratation du sulfate de calcium hémihydraté." Electronic Thesis or Diss., Lyon, INSA, 2023. http://www.theses.fr/2023ISAL0099.
Full textBecause of their setting ability, hydraulic binders are used for a wide variety of applications (e.g., construction materials, bone substitutes, ...). The setting reaction is always initiated by mixing one or several fine powders with an aqueous solution. The dissolution of the initial reactive powders results in the formation of a viscous paste, whose properties evolve with time to form a porous monolithic ceramic through the nucleation and precipitation of more stable phase(s). In this thesis, gypsum plaster CaSO4·2H2O obtained by the hydration reaction of calcium sulfate hemihydrate CaSO4·0,5H2O is studied under standard conditions (e.g., liquid/solid mass ratio, temperature and pressure), in order to develop multi-physic and multi-scale characterization techniques in-situ and ex-situ to monitor the evolution of:- the phase composition (rate of dissolution and precipitation) using calorimetric measurements, X-ray diffraction and Fourier-transform infrared spectrophotometry techniques;- the microstructure using scanning electron microscopy and X-ray microtomography;- the mechanical properties using ultrasonic propagation velocity measurement, shear and compressive dynamic mechanical analysis and compressive strength testing. This panel of techniques enabled to monitor and to correlate the various physical transitions occurring during the setting reaction, and thus to draw a global picture of the on-going phenomena