Добірка наукової літератури з теми "Procédés de composites"
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Статті в журналах з теми "Procédés de composites":
Hattabi, Mohamed, Ikbal Snaike, Jamal Echaabi, and Mohammed Ouadi Bensalah. "Simulation du front d'écoulement dans les procédés de moulage des composites liquides." Comptes Rendus Mécanique 333, no. 7 (July 2005): 585–91. http://dx.doi.org/10.1016/j.crme.2005.05.004.
Grail, Gaël, Martin Hirsekorn, Nicolas Carrère, Gilles Hivet, and Ridha Hambli. "Chaîne multimodèle : lien entre paramètres matériaux/procédés et performances de structures composites à renfort tissé." Revue des composites et des matériaux avancés 21, no. 1 (April 2011): 79–91. http://dx.doi.org/10.3166/rcma.21.79-91.
Chatel, Sylvain, Stéphane Guinard, and Serge Maison-Le Poëc. "Intégration de la simulation des procédés de fabrication : Besoins R et D liés aux structures composites EADS." Revue des composites et des matériaux avancés 15, no. 3 (December 23, 2005): 289–96. http://dx.doi.org/10.3166/rcma.15.289-296.
Sapounov, V. T., V. A. Mankovsky, P. Jodin, and G. Pluvinage. "L’optimisation des caractéristiques de résistance des matériaux composites en fonction des paramètres qui gèrent les procédés technologiques de fabrication." Matériaux & Techniques 84, no. 3-4 (1996): 21–25. http://dx.doi.org/10.1051/mattech/199684030021.
Lacoste, Eric, Olivier Mantaux, Caroline Del Borrello, and Michel Danis. "Simulation numérique des procédés d'élaboration des matériaux composites par infiltration. Application au cas des plaques pour les matrices métalliques." Revue des composites et des matériaux avancés 13, no. 1 (April 23, 2003): 69–83. http://dx.doi.org/10.3166/rcma.13.69-83.
Fariji, Anis. "Les figures multiples de l’hétérophonie dans la musique de Zad Moultaka." Circuit 27, no. 3 (January 16, 2018): 23–38. http://dx.doi.org/10.7202/1042836ar.
Mazzolini, Jérémy, Jean-Hugues questel, and Julien Valette. "Influence du MHP dans les procédés LRI. Analyses expérimentales sur l'interaction entre les paramètres procédé et les performances du composite." Revue des composites et des matériaux avancés 21, no. 1 (April 2011): 43–56. http://dx.doi.org/10.3166/rcma.21.45-56.
Provost, Serge. "Transmigration, du son vers la forme." Circuit 8, no. 1 (March 5, 2010): 43–48. http://dx.doi.org/10.7202/902190ar.
Huvet, Chloé. "La dissociation musique/images dans Jurassic Park : un élargissement des pratiques compositionnelles de l’âge d’or hollywoodien dans la partition de John Williams." Les Cahiers de la Société québécoise de recherche en musique 15, no. 2 (April 13, 2016): 23–39. http://dx.doi.org/10.7202/1036117ar.
Tremblay, Jacques. "L’écriture à haute voix : « Lonely Child » de Claude Vivier." Circuit 11, no. 1 (October 2, 2002): 45–67. http://dx.doi.org/10.7202/004705ar.
Дисертації з теми "Procédés de composites":
Taillet, Brice. "Procédés alternatifs pour l'élaboration de matériaux composites à matrice céramique." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0203/document.
The opening of the civil aviation market to ceramic matrix composite materials requires the development of new methods of producing compatible with the production rates and manufacturing costs of the sector.For this purpose, experimental work was conducted to develop a silicon oxynitride matrix (Si2N2O) by combustion synthesis (or SHS), from reactive powders. In recent years, Si2N2O has emerged as a promising new high-temperature ceramic material, characterized by not only good mechanical properties, but also by a higher oxidation resistance than silicon carbide. The underlying basis of SHS relies on the ability of highly exothermic reactions to be self-sustaining and, therefore, energetically efficient. Powders are first milled, dispersed and stabilized in aqueous media, and then impregnated into a fibrous preform composed of the latest generation of silicon carbide fibers (Hi-Nicalon S). SHS reaction is then carried out in a reactor specially designed and dedicated to this study. Particular attention was focused on the optimization of experimental parameters for the synthesis of a Si2N2O based matrix. Silicon metal in a mixture with silica powder was combusted under pressurized nitrogen gas into silicon oxynitride. The pressure and the temperature rise rate were the principal parameters for the composition and microstructure of the matrix. These parameters have been the subject of extensive experimental work to reach a homogeneous matrix with a very high formation rate for silicon oxynitride (more than 90wt%) and with a level of residual porosity lower than 10%. This work was completed by the calculation of the physical properties of the matrix, by the mechanical characterization of the composite material, and finally by a temperature aging test under moist air
Cazaux, Guillaume. "Faisabilité des procédés LCM pour l'élaboration de composites renfort continu à matrice thermoplastique polyamide." Thesis, Le Havre, 2016. http://www.theses.fr/2016LEHA0010/document.
The present work is a contribution to the thermoplastic composites manufacturing by a non-reactive Liquid Composite Molding process for the automotive industry. The thesis was carried out by the « ANR TAPAS » project (Thermoplastic Process for Automotive Composite Structure) and was focused on the elaboration of continious-fiber reinforced composites plates injected with a high-fluidity polyamide 6,6 (PA 6,6) by the Resin Transfer Molding process. The first goal was focused on increasing injection rates through the study of the in-plane permeability of unidirectional (UD) glass fiber fabrics with high mechanical modulus (HM). Experiments and modelling results showed that the permeability of these UD has been enhanced by modifying specific structural parameters of their architecture. The analytical model developped and used is based on a flow distribution according two differents scales of porosity : in and inter-yarns. The second part of the work was focused on the understanding of phenomenas that take place at the interface created between glass fiber and the matrix during the impregnation step. The wettability and adhesion of molten PA 6,6 dropped on a glass substrate is studied at different processing temperature. The last part introduce the thermoplastic composite plates elaborated by RTM-TP process. The optimum operating conditions as well as preforms saturation and mechanical properties are also studied and discussed
Magnant, Jérôme. "Composites fibreux denses à matrice céramique autocicatrisante élaborés par des procédés hybrides." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14105/document.
The fabrication of multidirectional continuous carbon fibers reinforced dense self healing Ceramic Matrix Composites by new short time hybrid processes was studied. The processes developed are based, first, on the deposition of fiber interphase and coating by chemical vapor infiltration, next, on the introduction of ceramic powders into the fibrous preform by Slurry Impregnation and, finally, on the densification of the composite by liquid-phase Spark Plasma Sintering (SPS) or by Reactive Melt Infiltration of silicon (RMI).The homogeneous introduction of the ceramic particles into the multidirectional fiber preforms was realized by slurry impregnation from highly concentrated (> 32 %vol.) and well dispersed aqueous colloid suspensions. The densification of the composites by spark plasma sintering was possible with a short (< 5 minutes) dwelling period in temperature. The chemical degradation of the carbon fibers during the fabrication was prevented by adapting the sintering pressure cycle to inhibit gas evolution inside the system. The composites elaborated are dense. The fully densification of the composites by RMI was realised by carefully controlling the impregnation parameters to avoid to entrap some gaseous species inside the fiber preforms. Our carbon fiber reinforced ceramic matrix composites processed by Spark Plasma Sintering or Reactive Melt Infiltration have a damageable mechanical behaviour with a room temperature bending stress at failure around 300 MPa and have shown their ability to self-healing in oxidizing conditions. Compared to the CMC processed by CVI, the composites processed with a final consolidation step by RMI are fully dense and have a similar room temperature tensile test behaviour with an ultimate tensile stress around 220 MPa
Waris, Marc. "Mise en œuvre, instrumentation, validation et modélisation d’un système d’injection RTM pour la fabrication de structures composites de hautes performances." Thesis, Saint-Etienne, EMSE, 2012. http://www.theses.fr/2012EMSE0661/document.
A significant growth in production and consumption of composite materials can be seen recently; growth reinforced by the new European standards, aimed at reducing CO2 emissions by the year 2020.The producing of complex parts can cause many difficulties for manufacturing because of their geometries and / or their constituents (using of various materials). For example, dry zones or geometric distortion formation. The origins of these difficulties are often related to a lack of knowledge and control of the reinforcement's impregnation phases and material curing.Improving the robustness of the processes demands a detailed knowledge of physical phenomena that occur during the producing. For this, we studied the composite materials production through the implementation of a laboratory demonstrator in the project LCM Smart. This pilot injection was used to validate instrumentation solutions, from innovative sensors (OFS) developed in partnership with the optical laboratory Hubert Curien. The application of this instrumentation in the context of RTM process monitoring in the development of simple parts has demonstrated the capabilities of OFS to control physical characteristics of the part (the flow front, temperature, residual strain and curing degree). The comparison of the measured characteristics with numerical simulations carried out in collaboration with ESI showed a good correlation.Finally, instrumentation has demonstrated the capacity of composite tool made by HexTool to minimize the residual stresses due to the tool/part interaction
Madigou, Véronique. "Relations procédés-microtexture-propriétés dans des composites à matrice Si3 N4 renforcés SiC." Pau, 1991. http://www.theses.fr/1991PAUU3024.
Haddad, Madjid. "Étude de l'impact des défauts d'usinage des structures composites par détourage sur leur comportement mécanique." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2179/.
This thesis focuses on problems encountered during the trimming of composites materials using continuous fibers. The thesis is divided into three main parts. In the first part, the machinability of two composites materials made of carbon fiber and epoxy matrix at standard cutting speed and at high cutting speed is investigated. Surface damages induced are analyzed using surface roughness tester and the scanning electronic microscope. The impact of cutting conditions, machining processes (i. E. , cutting tool, abrasive diamond cutter, abrasive water jet machining), and nature of composite materials on the form and size of the surface defects are studied. The second part of the thesis concerns the study of the dust generated during trimming in terms of number of particles present in air and masses. The effect of tool geometry, composite material and cutting conditions on the generated dust is studied. The last part is dedicated to the study of the relationship between machining processes, surface defects and mechanical behaviour of composite parts in quasi-static and dynamic environment. Specimens designed for quasi static tests are instrumented on the surface for the digital images correlations and high speed cameras to monitor the damage generation and progression during the tests. The dynamic tests are instrumented by an infrared camera in order to measure the thermal dissipation during the damaging phases of specimens
Kim, Moo Sun. "Optimisation des structures composites en intégrant les paramètres de fabrication." Saint-Etienne, EMSE, 2007. http://www.theses.fr/2007EMSE0029.
In this study, optimization of mechanical properties of a composite material product manufactured by compression molding process was performed by considering the changes of fiber states. Fiber states, which changes by the compression molding process, are fiber volume fraction and fiber orientation. These fiber states lose their initial properties and show non-homogeneous and anisotropic properties due to the pressure and velocity field generated during compression process. To predict the fiber states changes during the compression molding process, fiber separation phenomenon and orientation were numerically considered by coupling them with flow analysis computed by CVFEM. Based on the fiber states information, the mechanical properties of chopped fiber composite were computed. Then they were applied to the plate type structure analysis. In the gross, numerical analysis of process and structure were coupled. In addition, the optimization of structural design and process condition was performed. Structural thickness and precharge location and dimension were considered as the design variables. At first, the Complex method was implemented for thickness optimization. The optimization results of two cases, where the compression process was considered in one case and homogeneous and isotropic material were considered in the other, are compared. To resolve the precharge location and dimension optimization problem, genetic algorithm was implemented. The constraints of design vectors and the characteristic of optimization problem divide search space into feasible search space and unfeasible search space. To handle the constraints of optimization problem, the penalty function method and modified repair algorithm were applied. By applying them to the test function, optimization procedures for these two methods were compared. The suggested techniques were applied to symmetric rectangular plate, car-hood type structure and arbitrary and asymmetric shape structure and the optimization results were compared
Khazma, Mahmoud. "Contribution à l’optimisation de composites cimentaires à base de coproduits du lin : procédés de traitement de la matière végétale et de la matrice ; impact de ces procédés sur les propriétés des composites élaborés." Amiens, 2008. http://www.theses.fr/2008AMIE0125.
This work is done in the processes and materials engineering group of the Laboratory of innovating technologies of the University of Picardy Jules Verne. The main goal of this work is the valorization of vegetables’ byproducts, specifically the use of flax shives as aggregates in cementitious matrix. Flax shives, like all lignocellulosic materials, are known by their high hydrophilic properties. During concrete confection, shives absorb mixing and inhibit the cement hydration. To optimize their use, these shives must be hydorphobisated. Treated shives are characterized by SEM, FTIR, water absorption…. Then, the impact of these treatments on the hydration of cement matrix and the physico-chemicals characteristics of composites are quantified and evaluated. The second way explored in this thesis is the matrix treatment. These treatments are done using molecules extracted from the biomass. The elaborated composites show a high competitive properties in comparison with composites prepared with commercial vegetables aggregates
Davila, Montano Yves Angel. "Etude multi-échelle du couplage matériau-procédé pour l'identification et la modélisation des variabilités au sein d'une structure composite." Thesis, Toulouse 3, 2015. http://www.theses.fr/2015TOU30009/document.
One of the major challenges related to the use of composite materials in structural applications is the difficulty to predict the effect of their inherent variabilities on the mechanical behaviour for such materials. The structural properties do not only depend on the fabrication process, but also depend on the raw materials and design considerations. The major goal of this thesis is the introduction of geometrical variabilities into a finite element (FE) model starting from the hypothesis that geometrical variations are not completely randomly distributed, but they maintain a spatial continuous evolution. To guarantee that the input parameters of the FE model are based on the reality of the material, the identification and quantification of the variability distributions together with their spatial evolutions are performed during the fabrication of CFRP composite plates. These plates have a 16 ply quasi-isotropic stratification and are cured in autoclave. Among the identified and quantified variability sources, the study of the in plane fibre misalignments and the evolution of the ply thickness variations has conducted to the proposition of mathematical representations of the spatial evolution of these variables based on the material reality. These mathematical representations are used to recreate different sets of virtual composites structures maintaining dispersion values similar to the real plates. Finally, the virtual structures are analysed in the FE model to evaluate the impact of such geometrical and material variabilities on the mechanical properties of the final structure
Drapier, Sylvain. "Modélisation multi-échelle des structures composites, comportement en compression et lien avec les procédés." Habilitation à diriger des recherches, Université Jean Monnet - Saint-Etienne, 2002. http://tel.archives-ouvertes.fr/tel-00562396.
Частини книг з теми "Procédés de composites":
Denèfle, Muriel. "Marina Tsvetaeva et les compositeurs européens (Schumann, Beethoven, Chopin, Wagner)." In Marina Tsvetaeva et l'Europe, 155–70. Editions des archives contemporaines, 2021. http://dx.doi.org/10.17184/eac.3369.
"Development of bio-composite foam in supercritical environment: influence of process parameters on the distribution of pores of biomaterial Arfan SUBHANI, Selmi E. BOZBAG, Véronique SANTRAN, Jean-Stéphane CONDORET, Séverine CAMY, Alain LAMURE." In Procédés et formulations au service de la santé, 81–93. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0939-4-008.
"Development of bio-composite foam in supercritical environment: influence of process parameters on the distribution of pores of biomaterial Arfan SUBHANI, Selmi E. BOZBAG, Véronique SANTRAN, Jean-Stéphane CONDORET, Séverine CAMY, Alain LAMURE." In Procédés et formulations au service de la santé, 81–93. EDP Sciences, 2020. http://dx.doi.org/10.1051/978-2-7598-0939-4.c008.