Academic literature on the topic 'Matériaux de pointe'
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Journal articles on the topic "Matériaux de pointe"
Dalpé, Robert, Élaine Gauthier, and Frances Anderson. "Les institutions de consultation en science et technologie : le cas des matériaux industriels de pointe." Recherche 40, no. 1 (April 12, 2005): 103–29. http://dx.doi.org/10.7202/057246ar.
Full textKossman, Stephania, Didier Chicot, and Alain Iost. "Indentation instrumentée multi-échelles appliquée à l’étude des matériaux massifs métalliques." Matériaux & Techniques 105, no. 1 (2017): 104. http://dx.doi.org/10.1051/mattech/2017007.
Full textHedan, Stéphen, Valéry Valle, and Mario Cottron. "Localisation expérimentale des effets 3D et transitoires en pointe de fissure pour différentes vitesses de propagation sur des matériaux fragiles." Comptes Rendus Mécanique 335, no. 4 (April 2007): 238–44. http://dx.doi.org/10.1016/j.crme.2007.03.006.
Full textBrière, J., N. Fréry, C. Buisson, B. Berneron, and R. Garnier. "Investigation en 2011–2013 d’un cluster de cancers chez un sous-traitant de l’industrie de pointe produisant des pièces en matériaux composites." Archives des Maladies Professionnelles et de l'Environnement 76, no. 1 (February 2015): 46–47. http://dx.doi.org/10.1016/j.admp.2014.12.008.
Full textGaléa, G., P. Ramez, M. J. Adler, and E. Rotaru. "Modélisation statistique des apports de MES associés au régime des crues d’un sous- bassin du Timis-Béga (Roumanie)." Revue des sciences de l'eau 17, no. 4 (April 12, 2005): 471–88. http://dx.doi.org/10.7202/705544ar.
Full textDionne, Jean-Claude, Jean-Marie M. Dubois, and Pascal Bernatchez. "La terrasse Mitis à la pointe de Mille-Vaches (péninsule de Portneuf), rive nord de l’estuaire maritime du Saint-Laurent : nature des dépôts et évolution du niveau marin relatif à l’holocène." Géographie physique et Quaternaire 58, no. 2-3 (July 18, 2006): 281–95. http://dx.doi.org/10.7202/013143ar.
Full textKarray, F., Z. Fakhfakh, A. Kallel, and R. Turki. "Interface tissus vivants-matériaux inertes." Canadian Journal of Physics 77, no. 9 (February 1, 2000): 745–50. http://dx.doi.org/10.1139/p99-032.
Full textCEA. "Mise au point de deux nouveaux matériaux à base de cobalt." La lettre du Collège de France, no. 36 (December 24, 2013): 34. http://dx.doi.org/10.4000/lettre-cdf.1637.
Full textBourgin, Patrick, and Pierre-François Gobin. "Matériaux et structures intelligents : le point sur les séminaires franco-japonais." Matériaux & Techniques 89 (2001): 3. http://dx.doi.org/10.1051/mattech/200189120003s.
Full textReyne, M. "Point de vue : les matériaux de demain... où l’on retrouve la bionique." Matériaux & Techniques 84, no. 3-4 (1996): 3–7. http://dx.doi.org/10.1051/mattech/199684030003.
Full textDissertations / Theses on the topic "Matériaux de pointe"
Crevoisier, d'Hurbache Jordan de. "Analyse multi-échelles de la fatigue des élastomères : définition et identification de l'endommagement en pointe de fissure." Paris 6, 2012. http://www.theses.fr/2012PA066381.
Full textThis study is part of the AMUFISE project (ANR, program " Matériaux Fonctionnels et Procédés Innovants") driven by the Michelin manufacture. It is focused on the study of material behavior, damage and crack propagation in filled elastomers using digital image correlation (DIC) as a kinematic measurement technic. The volume variation measurements on a sample under uniaxial cyclic loading shows a loss of incompressibility beyond a strain threshold. These results confirm those from a parallel study on the same materials using small angle X-ray scattering and showing a cavitation at a nanoscale. We also highlighted an anisotropy in the material behavior. A new methodology to identify behavior law parameters in an inhomogenious test was proposed. The principle is to minimise the difference between displacement fields measured using DIC and displacements fields obtained with a Finite Element program in which the limit conditions come from the measurments. We show at convergence that the difference between these two fields (of very low amplitude) essentially contains noise from the kinematic measurements. This technic does not depend on the complexity of the law used and is non-inrusive to the industrial finite element program. The study on crack propagation also benefist from the DIC measurements. Howewer, it appears that discriminant scales to highlight blunting phenomena and the crack propagation stabilisation are under 50-100 µm
Travaillot, Thomas. "Caractérisation mécanique des matériaux élastiques à l'échelle locale par microscopie à pointe vibrante : Approche multimodale et mesure de champs." Thesis, Besançon, 2014. http://www.theses.fr/2014BESA2011/document.
Full textThis work proposes an improvement of the Scanning Microdeformation Microscope (SMM), a scanningprobe microscope, for the mechanical elastic characterization of materials at local scale. It demonstratesthat using n > 2 SMM resonance frequencies allows to decouple Young’s modulus andPoisson’s ratio values for an isotropic material.The mechanical description of the resonator has been enriched in order to allow for an accuratemodeling over a wide frequency range. Procedures have been developed to identify the modellingparameters and the elastic constants of the materials from n > 2 resonant frequencies. Finally, theseprocedures have been applied to the characterization of various materials at local scale in order tovalidate the method and to present possibilities and limits.To improve robustness and move towards the characterization of anisotropic materials, a polarizedlightimaging interferometer was developed to measure the rotation field of reflecting surfaces in aparticular direction. The sensitivity to the rotation originates from a homemade birefringent prism withuniaxial gradient of refractive index. This system is able to measure a localized rotation field as it isinduced in the vicinity of the tip of the SMM. Its interest is also demonstrated in cases in which scaleeffects make the rotation measurement preferable to the out-of-plane displacement measurement
Boularas, Abderrahmane. "Modélisation multidimensionnelle des interactions électrostatiques pointe/diélectrique en microscopie à champ proche." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30366/document.
Full textThe Scanning Probe Microscopy techniques (SPM) are highly diversified and no longer confined to expert laboratories, being widely used by material scientists for "micro" or "nano" applications. The use of Atomic Force Microscopy (AFM), and techniques derived from it, such as Electrostatic Force Microscopy (EFM) or Kelvin Force Microscopy (KFM), provides a considerable advantage allowing the acquisition of new information down to nanoscale, such as the charge state of dielectric materials and their ability to store and dissipate charges. However, these techniques do not allow to precisely know the spatial distribution of the lateral and deep distribution of the space charge in the insulating materials, required for a better understanding of the phenomena of transportation and charge trapping data. For this purpose, we are interested in the electrostatic force distance curve -EFDC- as a new tool to allow the location of the space charge. The aim of the thesis is to understand the relationship between the shape of the force curve and the spatial positioning of the space charge in the material. To do this, two studies were conducted in parallel: an experimental study and a study by numerical modeling. The research work here is focused mainly on the simulation of the AFM probe by electrostatic modeling of physical phenomena. One of the difficult obstacles to do in this work is the taken in account disparity of scale objects modeled and the three-dimensionality of the system. For this purpose, a mathematical model for the study of electrostatic interactions between an AFM tip and the surface of a dielectric material has been developed in 2D. The discretization of equations describing the system is based on a new numerical scheme of high order finite volume method obtained by the principle of polynomial reconstruction operator. This first model was used to understand the influence of the geometry of the tip, including the radius of curvature of the apex and the half-opening angle on the qualitative and quantitative aspects of the force curves. The results show, for example, more than the radius of curvature of the tip is smaller the curvature of the force curve is pronounced
Lambert, Yvan. "Étude de l'endommagement en pointe de fissure dans le cas de la fissuration en plasticité non confinée." Compiègne, 1986. http://www.theses.fr/1986COMPI230.
Full textLe, Gac Gaëlle. "Etude de l'impact d'une pointe SNOM sur les propriétés des modes optiques d'une cavité à base de cristaux photoniques." Phd thesis, Ecole Centrale de Lyon, 2009. http://tel.archives-ouvertes.fr/tel-00564496.
Full textFan, Ji. "Analyse et simulation de résonateurs piézoélectriques pour des applications de filtrage." Limoges, 2009. https://aurore.unilim.fr/theses/nxfile/default/09506f6e-4c71-4a2a-880d-dacaf0cea95f/blobholder:0/2009LIMO4012.pdf.
Full textUsing the least squares method and the one-dimensional analyze, we present a method for all BAW (Bulk Acoustic Wave) resonator computation. Based on the proposed method, the thickness of the layer and the surface of the filter can be easily optimized. This method can be also used to calculate the performance of all filters BAW. We have fabricated the piezoelectric resonators in our laboratory. We present all the technologies that we have used for the thin film layer deposition and all the processes for the etching. The resonators realized in our laboratory are composed of 4 layers: top electrode (Mo), piezoelectric layer (AlN), bottom electrode (Mo) and the membrane (SiO2). The responses of the measure are consistent with the results of the simulation
Durif, Emilien. "Caractérisation du couplage mécano-électrochimique en pointe de fissure lors de la fissuration assistée par corrosion sous contrainte : cas du Zircaloy-4 en milieu aqueux halogéné." Phd thesis, INSA de Lyon, 2012. http://tel.archives-ouvertes.fr/tel-00759340.
Full textSvarnas, Panayiotis. "Etude expérimentale de l'influence du plasma froid (N2, O2, Ar, Air) créé dans une décharge luminescente de géométrie pointe-plan sur les propriétés de surface de matériaux polymères : application au traitement des couches minces de PS." Pau, 2004. http://www.theses.fr/2004PAUU3014.
Full textThe principal objects of the present thesis are : the optimized production of atactic polystyrene thin films of increased wettability, the study of macroscopic characteristics of the plasma in absence/presence of these samples and the definition of specific mechanisms which govern the plasma-polymer interaction. The techniques used are NMR, XPS, SEM, AFM analyses, contact angle measurements, electrical and optical measurements. Contact angles varying between 5ʿ and 20ʿ are obtained with drops of deionized water. The applied treatment does not practically alter the surface mophology of the thin films. The excited neutral species play the principal role to the surface treatment and the emphasis is givent to the role of metastable particles. The polymer provokes changes in the cathodic sheath of the discharge
Shinko, Tomoki. "Experimental Characterization of Influence of Gaseous Hydrogen on Fatigue Crack Propagation and Crack Tip Plasticity in Commercially Pure Iron." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2019. http://www.theses.fr/2019ESMA0003/document.
Full textThe objective of this study is to experimentally characterize Hydrogen-Affected Fatigue Crack Growth (HAFCG) behavior under various conditions and clarify the mechanism by focusing on crack tip plasticity. For this objective, as a first step, the influence of hydrogen on plastic deformation has been investigated by means of tensile tests in a commercially pure iron, Armco iron, under gaseous hydrogen. The results of the tests pointed out that the hydrogen effect on crack propagation is more important than that on uniform plastic deformation. Then, the HAFCG was investigated by means of FCG tests under various conditions of crack tip stress intensity ΔK, hydrogen gas pressure (PH2 = 3.5 and 35 MPa) and loading frequency (f = 0.02 – 20 Hz). It has been revealed that the FCGRs in a high ΔK regime were highly enhanced by hydrogen up to 50 times higher than the one in air. The fracture mode was a brittle intergranular fracture in a low ΔK regime, while it is a brittle transgranular quasi-cleavage one in a high ΔK regime. The value of ΔKtr (value of ΔK triggering the FCGR enhancement) decreases by increasing the pressure PH2. Besides, the FCGR enhancement increases by decreasing the frequency f. Once f becomes lower than a critical value, the HAFCG rate significantly decreases down to the same level as in nitrogen., The crack tip plasticity was analyzed in a multiscale approach by means of optical microscopy, out-of-plane displacement measurement, and scanning transmission electron microscopy of dislocation structure immediately beneath the fracture surface (FIB/STEM). As a result, no clear modification of monotonic crack tip plasticity by hydrogen was observed, while a drastic reduction of cyclic crack tip plasticity associated with the FCGR enhancement was identified. Based on the experimental evidences, models of the hydrogen-induced intergranular FCG mechanism involving microvoid coalescence along grain boundary and the hydrogen-induced transgranular FCG mechanism involving cyclic cleavage due to crack tip plasticity reduction have been proposed. Three characteristic criteria of HAFCG (ΔKtr, hydrogen gradient (PH2 × f)1/2 and upper limit of FCGR) have been established. These criteria are expected to be useful for improving fatigue design and reliability of hydrogen-related equipment
Nguyen, Thanh Hai. "Modélisation numérique et rhéologie des matériaux à particules déformables." Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT273/document.
Full textSoft-particle materials are complex forms of matter that occur in numerous applications in chemical, pharmaceutical, cosmetic and food products. Joint effects of disorder and large particle deformations lead to novel mechanical properties that differ from those of rigid-particle materials. In particular, the compressibility and shear resistance depend on both particle rearrangements and their shape change. In this doctoral work, we developed an original approach for numerical simulation of these systems. To allow the particles to deform without breakage, each particle is modeled as an aggregate of frictionless primary particles interacting via a Lennard-Jones attraction force and impenetrability constraints. Energy dissipation by inelastic collisions between primary particles leads to the plastic nature of particle deformations. This model was used to investigate the compaction and shear behavior of soft-particle systems. We find that the compressibility is strongly nonlinear as the packing fraction increases beyond that of a random close packing of rigid particles. In continuous shearing, a critical state is reached with a dilatancy that depends on the confining pressure. In this state, we investigate the shear resistance, distributions of particle shapes, fabric properties and inter-particle forces as a function of the confining pressure. We also compare our results with those obtained by using the Material Point Method (MPM) with elastic particles
Books on the topic "Matériaux de pointe"
Canada, Conseil des sciences du. Les matériaux industriels de pointe: Perspectives canadiennes. S.l: s.n, 1985.
Find full textCanada. Comité consultatif national sur les matériaux industriels de pointe. Rapport du Comité consultatif national sur les matériaux industriels de pointe: Stratégies et actions à mettre en oeuvre pour inciter les fabricants canadiens à adopter les matériaux de pointe. Ottawa, Ont: Industrie Canada, 1993.
Find full textInternational Symposium on Advanced Materials for Biomedical Applications (2002 Montréal, Québec). Advanced materials for biomedical applications =: Matériaux de pointe pour applications biomédicales : proceedings of the International Symposium on Advanced Materials for Biomedical Applications (SAMBA), August 11-14, 2002, Montréal, Québec, Canada. Edited by Mantovani D. 1968-, Canadian Institute of Mining, Metallurgy and Petroleum., and Conference of Metallurgists (41st : 2002 : Montréal, Québec). Montreal: Canadian Institute of Mining, Metallurgy and Petroleum, 2002.
Find full textSIMON, Guilhem, ed. Spectroscopies vibrationnelles. Editions des archives contemporaines, 2020. http://dx.doi.org/10.17184/eac.9782813002556.
Full text(Editor), Iosif Galanakis, and Peter H. Dederichs (Editor), eds. Half-metallic Alloys: Fundamentals and Applications (Lecture Notes in Physics). Springer, 2005.
Find full textI, Galanakis, and Dederichs P. H. 1938-, eds. Half-metallic alloys: Fundamentals and applications. Berlin: Springer, 2005.
Find full textBook chapters on the topic "Matériaux de pointe"
Isel, M. "Le poste de travail de l'orthésiste et le choix des matériaux." In Orthèses De la Main et du Poignet. Protocoles De Rééducation, 21–26. Elsevier, 2012. http://dx.doi.org/10.1016/b978-2-294-71185-5.00004-7.
Full textMagneron, Nathalie, and Jean-Louis Martinand. "Tendances actuelles et orientations possibles des formations universitaires en France sur les matériaux du point de vue de la chimie." In Éducation technologique et sciences de l’ingénieur, 31–42. Presses universitaires du Septentrion, 2015. http://dx.doi.org/10.4000/books.septentrion.19156.
Full textConference papers on the topic "Matériaux de pointe"
Aukauloo, Ally. "S'inspirer de la nature pour produire de l'énergie. Photosynthèse artificielle à l'Université Paris-Saclay." In MOlecules and Materials for the ENergy of TOMorrow. MSH Paris-Saclay Éditions, 2021. http://dx.doi.org/10.52983/nova3845.
Full textCatros, S. "A quoi servent les Bio-Imprimantes 3D ?" In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206601012.
Full textBaranes, M., and T. Fortin. "Planification et chirurgie guidée - Avis d’experts : Apports des nouvelles technologies en implantologie : de la planification à la réalisation de la prothèse provisoire immédiate." In 66ème Congrès de la SFCO. Les Ulis, France: EDP Sciences, 2020. http://dx.doi.org/10.1051/sfco/20206601011.
Full textConti, Flávia Pereira. "Design de sistemas para análise do ciclo de vida de um produto: slow fashion." In Systems & Design 2017. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/sd2017.2017.6649.
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