Academic literature on the topic 'Analyse de défauts cristallins'
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Journal articles on the topic "Analyse de défauts cristallins"
Böhme, Edith. "Analyse par observation microscopique des défauts des pièces moulées en polymères cristallins." Matériaux & Techniques 74, no. 1-2 (1986): 17–24. http://dx.doi.org/10.1051/mattech/198674010017.
Full textJulien, Ludovic A. "Chômage d’équilibre, équilibres multiples et défauts de coordination." L'Actualité économique 79, no. 4 (March 8, 2005): 523–62. http://dx.doi.org/10.7202/010565ar.
Full textMitoy, M., E. Devolder, A. Vigouroux, and P. Sixou. "Analyse et simulation d’images de textures et défauts de cristaux liquides." Revue de Métallurgie 90, no. 9 (September 1993): 1142. http://dx.doi.org/10.1051/metal/199390091142.
Full textMesquita, Mirka. "Le mental déficient et le mental malade." psychologie clinique, no. 46 (2018): 60–70. http://dx.doi.org/10.1051/psyc/201846060.
Full textPerret, Louis. "LES GARANTIES LÉGALES RELATIVES À LA QUALITÉ D’UN PRODUIT SELON LA NOUVELLE LOI DE LA PROTECTION DU CONSOMMATEUR." Revue générale de droit 10, no. 2 (May 8, 2019): 343–84. http://dx.doi.org/10.7202/1059503ar.
Full textAminallah, Laid, Gérard Mesmacque, and Boualem Serier. "Analyse numérique tridimensionnelle de la nocivité des défauts dans les conduites en polypropylène." Revue des composites et des matériaux avancés 19, no. 1 (May 13, 2009): 39–53. http://dx.doi.org/10.3166/rcma.19.39-53.
Full textHenault, F., and C. Royere. "Concentration du rayonnement solaire : analyse et évaluation des défauts de réglage de facettes réfléchissantes." Revue de Physique Appliquée 24, no. 5 (1989): 563–76. http://dx.doi.org/10.1051/rphysap:01989002405056300.
Full textMoore, Vincent, R. Dufour, A. Mailhot, and M. Carignan. "Le rôle de l’optométriste dans une approche multidisciplinaire de réadaptation pour la clientèle aînée atteinte d’hémianopsie homonyme : un cas clinique." Canadian Journal of Optometry 77, no. 1 (March 24, 2015): 18. http://dx.doi.org/10.15353/cjo.77.515.
Full textOlalla, Manuel, Herminia López, María C. López, and Marina Villalón. "Analyse sensorielle des vins élaborés dans la région espagnole de la « Alpujarra - Contraviesa »." OENO One 28, no. 1 (March 31, 1994): 33. http://dx.doi.org/10.20870/oeno-one.1994.28.1.1156.
Full textMouffe*, Chantal. "Le politique et la dynamique des passions." Politique et Sociétés 22, no. 3 (August 24, 2004): 143–54. http://dx.doi.org/10.7202/008854ar.
Full textDissertations / Theses on the topic "Analyse de défauts cristallins"
Raddenzati, Aurélien. "Optimisation du transport électronique dans le silicium cristallin (c-Si) en présence de nanostructures." Electronic Thesis or Diss., Mulhouse, 2017. https://www.learning-center.uha.fr/.
Full textOne of the limitations to the widespread use of photonic energy is the limited efficiency of photovoltaic (PV) cells, which can only be improved industrially today by using expensive, rare and toxic materials or fragile devices. Silicon is the most abundant material, the least toxic to manufacture and recycle. It is also the cheapest and the best mastered industrially. However, the proportion of the light spectrum that can be converted into electricity remains incomplete, which limits its efficiency. The introduction of photonic nanotechnology has made it possible to increase photoconversion efficiency by broadening the photoconvertible spectrum of native silicon and by using a multistage photoconversion effect outside the band gap. The operational nano-unit of crystalline silicon in this case is the "Segton", which is avariant of the divacancy organized as a buried layer and located at the artificially created interface between amorphous and crystalline silicon. This work provides an update on the demonstrators of giânt photoconversion cells, and in particular on the latest pre-industrial technological resources used for this type of production. This was implemented incollaboration with various laboratories. This thesis proposes new characterization methods adapted to photoconversion using the low-temperature photoluminescence spectra in order to detect the good generation of divacancies due to the implementation steps during the fabrication. Finally, the simulation, the manufacturing and the characterization activities are reviewed in detail, ending with a prospective to future industrial production
Hachet, Guillaume. "Multi-scale investigation of the consequences of hydrogen on the mechanical response of cyclically strained nickel single crystal." Thesis, La Rochelle, 2018. http://www.theses.fr/2018LAROS022/document.
Full textHydrogen in metals can lead to irreversible damages on engineering structures. Consequently, the effects of the solute on the mechanical properties and the plasticity mechanisms of these materials have to be clarified. The proposed study consists to investigate the effects of hydrogen on the mechanical response of nickel single crystal strained by fatigue from macroscopic scale down to the atomic scale. At macroscopic scale, cyclic tests are conducted on multi-slip oriented nickel with several hydrogen concentrations to evaluate its consequences on the cyclic hardening of the metal. Then, a microstructural characterisation of the heterogeneities developed by fatigue is conducted for several plastic deformation amplitudes on nickel with and without hydrogen. The deformation of the metal induces a microstructure in form of wall and channel phases, which partially depend on the elastic interactions between the stress state, hydrogen and the induced crystalline defects. Therefore, the impact of hydrogen of the elastic properties of nickel single crystal is investigated using atomic scale calculations and experiments. Further calculations at this length scale associated with analytical elastic models are conducted to evaluate the stability of fatigue induced dislocation structures in presence of the solute, vacancies and vacancy clusters. The main conclusions of this study arise from the analysis of the results obtained from macroscopic scale down to the atomic scale and from the combination of both numerical and experimental techniques. In particular, the incorporation of hydrogen leads to a hardening of the nickel intrinsically. However, the formation of vacancies and vacancy clusters by the incorporation of hydrogen counteracts the effects of the solute and participates in the competition between the softening and the hardening of cyclically strained nickel single crystal observed at macroscopic scale
Monier, Vanessa. "Etude des défauts cristallins dans le silicium par diffusion de la lumière." Aix-Marseille 3, 2010. http://www.theses.fr/2010AIX30056.
Full textThe on-going quality improvement of Silicon-On-Insulator wafers motivates further development of Laser Scattering Tomography (LST). This technique enables the investigation of oxygen precipitates and dislocations in silicon by means of infra-red light scattering. After evaluating the LST capability for the investigation of statistical populations of oxygen precipitates, the characterisation of individual precipitates was addressed. The size of specific oxygen precipitates was accurately monitored during their growth for different temperatures and defect morphologies. In the second part of this work, the theory of light scattering by a dislocation was adapted to the silicon case. This development combined with the tomography and polarization LST options makes it possible the complete characterisation of non-decorated dislocation slip systems. The discrimination of decorated vs. Non-decorated dislocations is also achievable by LST
Derder, Choukri. "Interfaces et défauts cristallins dans les composés intermétalliques Ni3Al, Co3Ti, TiAl et Ti3Al." Grenoble INPG, 1993. http://www.theses.fr/1993INPG0163.
Full textLoubradou, Marc. "Etude des déformations autour des défauts cristallins à l'échelle atomique : dislocations, interfaces facettées." Grenoble INPG, 1990. http://www.theses.fr/1990INPG0155.
Full textLantreibecq, Arthur. "Détermination de la nature et de l'origine des défauts cristallins dans le silicium monolike." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30311/document.
Full textMonolike silicon (ML Si), is a material obtained by directional solidification on monocrystalline seeds and dedicated to photovoltaic applications. This thesis focuses on the structural quality of these crystals of several hundred kilograms that contain defects that potentially affect the photoelectric yield. The goal is to understand the mechanisms by which these defects nucleate and multiply in order to inhibit them. Since the development of sub-grain boundaries (SGB), which are the main factors for the losses of photovoltaic yields, is potentially related to the thermomechanical stresses that develop during a thermal cycle, we simulated numerically the temperatures of an oven containing an ingot over a complete cycle (fusion, growth, cooling). From the temperature values, we were able to establish a map of the thermomechanical stresses as well as their temporal evolution. In parallel, we used several structural and electrical characterization techniques to analyze crystalline defects and their distribution in the ingot at different scales. During the cycle, a first maximum of stress at the end of the heating stage generates dislocations and precursors of SGB in the seed. The second stress maximum at the end of solidification / start of cooling stage leads to the final organization of background dislocations present in the whole ingot. Once the SGB appear, they extend laterally as the solid-liquid interface progresses. These SGB have a structure consisting of sessile and vertical dislocations, which follow the solidification front and also mobile dislocations that interact with this pre-existing structure. The integration of these mobile dislocations, which can occur just below the solid-liquid interface or during cooling, increases the misorientation of the SGB. [...]
Robert, Donatien. "Etude multi-échelle des mécanismes de (dé)lithiation et de dégradation d'électrodes à base de LiFePO4 et de Silicium pour accumulateurs Li-ion." Phd thesis, Université de Grenoble, 2013. http://tel.archives-ouvertes.fr/tel-00924945.
Full textHickel, Pierre-Emmanuel. "Croissance hydrothermale du quartz-A : solubilité, caractérisations physico-chimiques et applications des monocristaux." Bordeaux 1, 2000. http://www.theses.fr/2000BOR10517.
Full textQuartz-a is a piezoelectric component of high frequency electronic devices. Improving its performance requires a reduction in the physical and chemical defects induced during the hydrothermal growth of the crystals. With this objective in mind this study has concentrated on two main areas of research; the search of new solvents in which the solubility of quartz is suitable for the hydrothermal growth process and the ability to grow crystals with thermodynamic parameters that are more demanding than those currently in use in industrial processes. These two areas of research have required further development of the existing technology so as to improve the reliability of the production processes. In particular by improving the seal for the autoclave and adopting an accurate real time control system. In the long term this research will help bring about better knowledge of ways to analyse the defects in the growth of synthetic crystals. As a first step towards thi crystal defects have been purposely introduced and the signal obtained interpreted using a number of investigative techniques. Infra-red spectrometry, ICPMS, Castaing microprobe, cathodoluminescence, thermoluminescence, X-ray topography)
Liang, Xiaoyu. "Comportement en fatigue à grand nombre de cycle d’un acier inoxydable 316L obtenu par fabrication additive : effets de la microstructure, de la rugosité et des défauts." Thesis, Paris, HESAM, 2020. http://www.theses.fr/2020HESAE017.
Full textThis study aims to investigate the influence of both the microstructure and surface defects on the high cycle fatigue (HCF) behavior of a 316L stainless steel obtained by additive manufacturing (AM). Surface defects and microstructure are dominant factors of fatigue behavior, while the AM materials often exhibit distinguished surface state and microstructure compared to conventional materials. The current study begins with an investigation of the material properties that are related to fatigue behavior. Microstructure observations of the powder and fabricated specimens are undertaken. Profilometry and tomography analyses make the inherent defects visible. The hardness, elastic behavior and elastic-plastic behavior are studied via mechanical tests. Then, load-controlled fatigue tests concerning different surface-treated specimens under different loading types are conducted. To reveal the mechanism of fatigue failure in the studied specimens, a comprehensive fractography analysis is carried out. Experimental research reveals the weakening of fatigue strength due to lack-of-fusion defects. Yet, the effect of the microstructural attributes is difficult to evaluate without numerical tools. A preliminary numerical study about the application of the non-local method in an explicit microstructure sensitive model is undertaken to complement the microstructure-sensitive modeling framework. Based on the data collected in the experimental campaign, a finite element model that can take into consideration of the defects and the microstructure of the SLM SS 316L is built up. Finite element analyses are performed with both cubic elasticity and polycrystal plasticity constitutive laws. With the help of the statistical method, the results from the FE model are used to quantitatively assess the influence of surface roughness and microstructural attributes on the fatigue performance of SLM SS 316L
Perillat-merceroz, Guillaume. "Mécanismes de croissance et défauts cristallins dans les structures à nanofils de ZnO pour les LED." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00673255.
Full textBooks on the topic "Analyse de défauts cristallins"
Boulenger, Alain. Surveillance des machines par analyse des vibrations. Paris: L'Usine Nouvelle, 2009.
Find full textE, Cladis P., Palffy-Muhoray P, and Saupe Alfred 1925-, eds. Dynamics and defects in liquid crystals: A festschrift in honor of Alfred Saupe. Amsterdam: Gordon and Breach Science Publishers, 1998.
Find full text(Editor), Patricia Cladis, and Peter Palffy-Muhoray (Editor), eds. Dynamics and Defects in Liquid Crystals: A Festschrift in Honor of Alfred Saupe. CRC, 1998.
Find full textBook chapters on the topic "Analyse de défauts cristallins"
"Antoine, comment faites-vous pour voir les défauts cristallins?" In Science en 4 saisons, 92–94. EDP Sciences, 2023. http://dx.doi.org/10.1051/978-2-7598-3206-4.c043.
Full textConference papers on the topic "Analyse de défauts cristallins"
Maximini, G. "Gestion chirurgicale des défauts osseux verticaux postérieurs." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206601010.
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