Littérature scientifique sur le sujet « Fibres flexibles »
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Articles de revues sur le sujet "Fibres flexibles"
Grinholtz, D., M. Haddad, M. Talso, E. Émiliani, S. Doizi et O. Traxer. « Étude des contraintes induites par les fibres laser dans les urétéroscopes flexibles ». Progrès en Urologie 26, no 13 (novembre 2016) : 699. http://dx.doi.org/10.1016/j.purol.2016.07.062.
Texte intégralParasakthibala, Ms G., et Mrs A. S. Monisha. « A Review on Natural Fibers ; Its Properties and Application Over Synthetic Fibers ». International Journal for Research in Applied Science and Engineering Technology 10, no 8 (31 août 2022) : 1894–97. http://dx.doi.org/10.22214/ijraset.2022.46530.
Texte intégralGuo, Y., C. Wassgren, B. Hancock, W. Ketterhagen et J. Curtis. « Computational study of granular shear flows of dry flexible fibres using the discrete element method ». Journal of Fluid Mechanics 775 (16 juin 2015) : 24–52. http://dx.doi.org/10.1017/jfm.2015.289.
Texte intégralUllrich, Julia, Martin Eisenreich, Yvonne Zimmermann, Dominik Mayer, Nina Koehne, Jacqueline F. Tschannett, Amalid Mahmud-Ali et Thomas Bechtold. « Piezo-Sensitive Fabrics from Carbon Black Containing Conductive Cellulose Fibres for Flexible Pressure Sensors ». Materials 13, no 22 (16 novembre 2020) : 5150. http://dx.doi.org/10.3390/ma13225150.
Texte intégralWang, Zhixun, Zhe Wang, Dong Li, Chunlei Yang, Qichong Zhang, Ming Chen, Huajian Gao et Lei Wei. « High-quality semiconductor fibres via mechanical design ». Nature 626, no 7997 (31 janvier 2024) : 72–78. http://dx.doi.org/10.1038/s41586-023-06946-0.
Texte intégralManikantan, Harishankar, Lei Li, Saverio E. Spagnolie et David Saintillan. « The instability of a sedimenting suspension of weakly flexible fibres ». Journal of Fluid Mechanics 756 (9 septembre 2014) : 935–64. http://dx.doi.org/10.1017/jfm.2014.482.
Texte intégralLUSIS, Vitalijs, Andrejs KRASNIKOVS, Olga KONONOVA, Videvuds-Arijs LAPSA, Rimvydas STONYS, Arturs MACANOVSKIS et Arturs LUKASENOKS. « EFFECT OF SHORT FIBERS ORIENTATION ON MECHANICAL PROPERTIES OF COMPOSITE MATERIAL – FIBER REINFORCED CONCRETE ». Journal of Civil Engineering and Management 23, no 8 (20 novembre 2017) : 1091–99. http://dx.doi.org/10.3846/13923730.2017.1381643.
Texte intégralPrabu, Krishnaa, J. Srinivasan et C. Prakash. « Ceramic and Glass Fibre Reinforced Flexible Composites for Particulate Filter Walls – A Novel Approach ». Fibres and Textiles in Eastern Europe 27, no 3(135) (30 juin 2019) : 91–97. http://dx.doi.org/10.5604/01.3001.0012.7747.
Texte intégralHamedi, Naser, et Lars-Göran Westerberg. « Simulation of Flexible Fibre Particle Interaction with a Single Cylinder ». Processes 9, no 2 (20 janvier 2021) : 191. http://dx.doi.org/10.3390/pr9020191.
Texte intégralWan, Tao Yu, Mohammad Chowdhury et George K. Stylios. « The Formation and Morphology of PVA Ferrogel Nanofibre by the Electrospinning Process ». Materials Science Forum 650 (mai 2010) : 361–66. http://dx.doi.org/10.4028/www.scientific.net/msf.650.361.
Texte intégralThèses sur le sujet "Fibres flexibles"
Allende, Sofia. « Dynamique et statistiques de particules allongées et flexibles dans des écoulements turbulents ». Thesis, Université Côte d'Azur, 2021. https://tel.archives-ouvertes.fr/tel-03284996.
Texte intégralThis thesis analyses the dynamics of small complex objects immersed in a turbulent environment. Turbulent flows are akin to apparent random fields, that usually display very non-Gaussian and fluctuating statistics, and which are known to enhance the mixing and the transport of the objects that they carry. Here, we focus on the transport of small complex particles, which are characterized by a non-trivial interplay between their mass, their shape and their rheology. Our aim is to gain a physical understanding on how turbulent fluctuations prescribe the dynamics of such complex particles, and lead to various physical phenomena, including preferential concentration, their deformation or catastrophic events such as their fragmentation. Studying such phenomena is relevant for both industrial and sustainability issues. For instance, while volcanic ash has direct impacts for the commercial flight industry, the blooming of diverse types of species such as jellyfishes or phytoplankton has consequences both for the maintenance of power plants and for the thermodynamics of our planet.Our approach relies on a systematic use of massive numerical simulations of the Navier-Stokes equations to generate homogeneous isotropic turbulence at high Reynolds number, and analyze in details the statistics of various types of particles such as inertial spheroids and flexible fibers. For small inertial spheroids, our numerical work shows that the translational and the rotational motion are essentially decoupled. While the translational motion can be described by the motion of a sphere with a suitably defined effective mass, the rotational dynamics displays more intricate features. This reflects in the statistics of the rotation rate and in the concentration properties. Conversely to translational motion, the rotational dynamics is therefore non-universal and depends on the specific shape of the spheroids.For small inertialess fibers, which constitute a paradigmatic example of flexible elongated particles, we find that the dynamics is most of the time closely resembling that of a stiff rod. Yet, in very rare and intermittent episodes, the fibers experience violent buckling events, which correlate to strong local compressions exerted by the local turbulent flow. Besides, detailed statistical investigations reveal that flexibility also produces misalignments of the fibers, e.g. deviations in the statistics of the orientation compared to the dynamics of a completely stiff rod. Our most salient observation is that the coupling between such flexible fibers and the turbulence can be phenomenologically modeled in terms of various activation processes, both for the buckling rate and for the misalignments statistics.We finally investigate scenarios for turbulent fragmentation of brittle fibers. To that end, we implement in our numerics two mechanisms leading to the fibers breaking in smaller pieces, either because of tensile failure or because of flexural failure. We sketch a stochastic description of such violent events that paves the way to better parametrization of turbulent-induced fragmentation of brittle material in industrial codes
Schulmann, Nava. « Du polymère à la fibre : Conformations et élasticité de chaines à deux dimensions ». Thesis, Strasbourg, 2012. http://www.theses.fr/2012STRAE014/document.
Texte intégralThis PhD thesis is devoted to a theoretical study of polymer and ’polymer like’ systems in strictly two dimensions. Polymer systems in reduced dimensions are of high experimental and technological interest and present theoretical challenges due to their strong non-mean-field-like behavior manifested by various non-trivial universal power law exponents. We focus on the strictly 2D limit where chain crossing is forbidden and study as function of density and of chain rigidity conformational and elastic properties of three system classes: flexible and semiflexible polymers at finite temperature and macroscopic athermal polymers (fibers) with imposed quenched curvature. For flexible polymers it is shown that although dense self-avoiding polymers are segregated with Flory exponent ν = 1/2 , they do not behave as Gaussian chains. In particular a non-zero contact exponent θ2 = 3/4 implies a fractal perimeter dimension of dp = 5/4. As a consequence and in agreement with the generalized Porod law, the intramolecular structure factor F(q) reveals a non-Gaussian behavior and the demixing temperature of 2D polymer blends is expected to be reduced. We also investigate the effects of chain rigidity on 2D polymer systems and found that universal behavior is not changed when the persistence length is not too large compared to the semidilute blob size. The nature of the nematic phase transition at higher rigidities, which is in the 2D case the subject of a long standing debate, is also briefly explored. Preliminary results seem to indicate a first order transition. Finally, motivated by recent theoretical work on elastic moduli of fiber bundles, we study the effects of spontaneous curvature at zero temperature. We show that by playing on the disorder of the Fourier mode amplitudes of the ground state, it is possible to tune the compression modulus, in qualitative agreement with theory
Makanga, Ursy. « Transport and deformation of flexible fibers in structured environments ». Electronic Thesis or Diss., Institut polytechnique de Paris, 2023. http://www.theses.fr/2023IPPAX080.
Texte intégralFlexible fibers are encountered in various situations in nature and industrial applications. Examples include microplastics fibers, cellulose fibers, and biofilm streamers. In a wide range of such situations, flexible fibers are often immersed in a fluidic environment with obstacles embedded. For instance, laundry washing machines discharge a large number of microplastics fibers (around 1900 fibers per wash) into wastewaters which contain a significant amount of debris. In such complex media, flexible fibers can exhibit nontrivial conformations and different modes of transport through the surrounding obstacles. These dynamics result from the complex interplay between their elastic response, collisions and hydrodynamic interactions. Understanding of these phenomena is therefore essential to study the physics of biological, environmental and industrial systems, but also to prevent issues such as pollution or clogging. While modeling slender particles in viscous fluids has been a major area of research over the past few decades, methodologies involving surrounding environments are scarce. The resulting complex coupling leads to a constrained formulation of the problem in addition of being stiff. Therefore, modeling fibers in complex media is challenging and can be computationally costly.In this thesis, we will propose a methodology to model flexible fibers in different environments that are made of rigid stationary obstacles. Our implementation enables dynamic simulations of large systems in a reasonable wall times on a single modern Graphics Processing Unit (GPU). Using the capabilities afforded by our method, together with simple experiments, we will investigate the sedimentation of flexible fibers in structured environments. The resulting findings provide physical insight into future experiments and the design of gravity-based sorting devices
Daieff, Marine. « Deformation and shape of flexible, microscale helices in viscous flows ». Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCC189/document.
Texte intégralFluid-structure interactions are of wide interest in engineering, industrial and medical applications. Understanding the interactions between complex shaped particles and flows might lead to new designs for targeted delivery, microflow sensors and to a better understanding of the behavior of microorganisms. In this thesis, we study the fluid-structure interaction of microscale chiral particles at low Reynolds numbers. The particles are rigid and confined in a 2D geometry or flexible with a helical shape. The combination of microfabrication techniques, such as multiscale assembly methods and microfluidics, enables to have a perfect control on both the geometrical and mechanical properties of the fibers and the flow features such as Newtonian or non Newtonian properties, the flow velocity and the flow geometry. First we studied asymmetric 2D rigid fibers, i.e. L-shaped fibers. Both lateral and transversal confinements have been investigated, as well as the shape of the fiber. When the particle is transported in viscous flows, it rotates until reaching an equilibrium orientation. In this specific orientation, the fiber drifts towards the lateral walls of the channel. A full investigation on the trajectories of the fiber has been performed and comparisons with symmetric particles have been done. Such research may help design devices to sort particles for medical purposes. Secondly we studied flexible microscale helical fibers. The dynamics of the helix formation has been investigated. The helices are formed from straight 2D ribbons, which spontaneously coil when released in water. The helical shape is reached only several minutes after the release but the helix keeps shrinking during several hours until reaching a preferred curvature. Two different timescales are identified in this formation dynamics. A model has been developed to understand the complex balance between elastic, surface tension and viscous forces at short times. After investigating several assumptions such as the impact of a sacrificial layer, a possible change in the modulus of the material and a creep behavior, the evolution of the radius at long times is most likely explained by creep. The extension and relaxation dynamics of the flexible fiber has also been studied in Newtonian and non Newtonian fluids. The study in polymer solutions is relevant and interesting because the size of the microhelix is comparable to the flagella of microorganisms and to the chains of high molecular weight polymers. Complex multiscale problems are then involved as the local viscosity at the scale of the ribbon might differ from the global viscosity at the scale of the flow
Joung, Clint Gwarngsoo. « Direct simulation studies of suspended particles and fibre-filled suspensions ». Thesis, The University of Sydney, 2003. http://hdl.handle.net/2123/554.
Texte intégralJoung, Clint Gwarngsoo. « Direct simulation studies of suspended particles and fibre-filled suspensions ». University of Sydney. Chemical Engineering, 2003. http://hdl.handle.net/2123/554.
Texte intégralHarris, Samantha Mary. « Dynamics of semi-flexible fibres in viscous flow ». Thesis, University of Leeds, 2007. http://etheses.whiterose.ac.uk/53/.
Texte intégralThompson, Ian. « Use of steel fibres to reinforce cement bound roadbase ». Thesis, University of Nottingham, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366364.
Texte intégralRezak, Sheila. « Analysis of flexible fiber suspensions using the Lattice Boltzmann method ». Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24798.
Texte intégralCommittee Co-Chair: Aidun, K. Cyrus; Committee Co-Chair: Ghiaasiaan, Mostafa; Committee Member: Deng, Yulin; Committee Member: Empie, Jeff; Committee Member: Patterson, Tim.
Ybañez, y. Valeros Numer. « The crack bridging behavior of flexible fibers ». Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11817.
Texte intégralIncludes bibliographical references (leaves 162-165).
by Numer Ybañez y Valeros.
M.S.
Livres sur le sujet "Fibres flexibles"
Pen, Wang Ko, Mehta Atul C et Turner J. Francis, dir. Flexible bronchoscopy. 2e éd. Malden, Mass : Blackwell Pub., 2004.
Trouver le texte intégralBrydon, A. G. Flexible card clothing and its application. Manchester : Textile Institute, 1988.
Trouver le texte intégralKeller, Thomas. Use of fibre reinforced polymers in bridge construction. Zurich, Switzerland : International Association for Bridge and Structural Engineering (IABSE), 2003. http://dx.doi.org/10.2749/sed007.
Texte intégralGalperin, Inna. A numerical model of the motion of a curved flexible fibre in a shear flow. Ottawa : National Library of Canada = Bibliothèque nationale du Canada, 1999.
Trouver le texte intégralDahl, Milo D. Effects of fiber motion on the acoustic behavior of an anisotropic, flexible fibrous material. [Washington, DC : National Aeronautics and Space Administration, 1987.
Trouver le texte intégral1943-, Murry Thomas, dir. FEESST : Flexible endoscopic evaluation of swallowing with sensory testing. San Diego : Plural Pub., 2005.
Trouver le texte intégralTurner, Roderick David. Dual wavelength fiber-optic polarimeter for path-integrated strain sensing : application to the measurement of local slope on a flexible beam. [Downsview, Ontario] : University of Toronto, Institute for Aerospace Studies, 1991.
Trouver le texte intégralTurner, Roderick David. Dual wavelength fiber-optic polarimeter for path-integrated strain sensing : application to the measurement of local slope on a flexible beam. [Downsview, Ont.] : University of Toronto, Institute for Aerospace Studies, 1990.
Trouver le texte intégralMelashvili, Yuri. Controlled structures with electromechanical and fiber-optical sensors. Hauppauge, NY, USA : Nova Science Publishers, 2008.
Trouver le texte intégralHearle, J. W. Mechanics of Flexible Fibre Assemblies. Ingramcontent, 2013.
Trouver le texte intégralChapitres de livres sur le sujet "Fibres flexibles"
Ouagne, Pierre, et Mahadev Bar. « Natural Fibres-Based Hybrid Towpregs ». Dans Flexible Towpregs and Their Thermoplastic Composites, 59–84. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9781003049715-3.
Texte intégralHuang, YongAn, YeWang Su et Shan Jiang. « Self-Assembly of Self-Similar Fibers for Stretchable Electronics ». Dans Flexible Electronics, 257–87. Singapore : Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6623-1_10.
Texte intégralKuncová, G., J. Vlček, M. Kubečková et J. Götz. « Flexible self-centering die for coating fibres ». Dans Progress and Trends in Rheology II, 391–94. Heidelberg : Steinkopff, 1988. http://dx.doi.org/10.1007/978-3-642-49337-9_135.
Texte intégralRath, Jan-Erik, Robert Graupner et Thorsten Schüppstuhl. « Die-Less Forming of Fiber-Reinforced Plastic Composites ». Dans Lecture Notes in Mechanical Engineering, 3–14. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-18326-3_1.
Texte intégralSalem, David R. « Draw-Induced Structure Development in Flexible-Chain Polymers ». Dans Structure Formation in Polymeric Fibers, 118–84. München : Carl Hanser Verlag GmbH & Co. KG, 2001. http://dx.doi.org/10.3139/9783446456808.004.
Texte intégralKnudsen, Bodo E. « Flexible Ureteroscopy : Holmium:YAG Laser and Optical Fibers ». Dans Ureteroscopy, 161–67. Totowa, NJ : Humana Press, 2012. http://dx.doi.org/10.1007/978-1-62703-206-3_14.
Texte intégralFukushima, Yasunori, Hiroki Murase et Yasuo Ohta. « Dyneema® : Super Fiber Produced by the Gel Spinning of a Flexible Polymer ». Dans High-Performance and Specialty Fibers, 109–32. Tokyo : Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-55203-1_7.
Texte intégralKoumbourlis, Anastassios C. « Flexible Fibre-Optic Bronchoscopy in the Intensive-Care Unit ». Dans Paediatric Bronchoscopy, 54–63. Basel : KARGER, 2010. http://dx.doi.org/10.1159/000314384.
Texte intégralDufek, W., C. Sebesta, K. Schütze, E. Hentschel, H. Rosen et B. Bauer. « Submucous and Intravascular Application of Fibrin Sealant Using a Double-Luminal Flexible Needle ». Dans Progress in Fibrin Sealing, 135–36. Berlin, Heidelberg : Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-48362-2_16.
Texte intégralXiang, Dong. « Flexible Strain Sensors Based on Elastic Fibers of Conductive Polymer Composites ». Dans Carbon-Based Conductive Polymer Composites, 113–25. Boca Raton : CRC Press, 2022. http://dx.doi.org/10.1201/9781003218661-6.
Texte intégralActes de conférences sur le sujet "Fibres flexibles"
Lammi, Tuulikki, et Annikki Heikkurinen. « Changes in Fibre Wall Structure during Defibration ». Dans The Fundamentals of Papermaking Materials, sous la direction de C. F. Baker. Fundamental Research Committee (FRC), Manchester, 1997. http://dx.doi.org/10.15376/frc.1997.1.641.
Texte intégralOstoja-Starzewski, M., et D. C. Stahl. « Mechanics of Random Fiber Networks ». Dans ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1992.
Texte intégralBerg, Arne, et Niels Jo̸rgen Risho̸j-Nielsen. « Integrity Monitoring of Flexible Risers by Optical Fibres ». Dans ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/omae2002-28088.
Texte intégralChen, Hongyu, Peter Wapperom et Donald G. Baird. « Simulation of Long Semi-Flexible Fiber Orientation During Injection Molding ». Dans ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8577.
Texte intégralPillai, Sivaji, Thomas O. H. Charrett, Thomas Kissinger, James H. Barrington, Stephen W. James et Ralph P. Tatam. « Optical Fibre Based Angle Measurement for Robotic Joints ». Dans Optical Fiber Sensors. Washington, D.C. : Optica Publishing Group, 2023. http://dx.doi.org/10.1364/ofs.2023.th6.82.
Texte intégralDa Costa Santos, Ana Caroline, et Paul Archbold. « Mechanical Properties and Fracture Energy of Concrete Beams Reinforced with Basalt Fibres ». Dans 4th International Conference on Bio-Based Building Materials. Switzerland : Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.316.
Texte intégralGörres, J., R. Amiri, M. Grondin et J. R. Wood. « Fibre Collapse and Sheet Structure ». Dans Products of Papermaking, sous la direction de C. F. Baker. Fundamental Research Committee (FRC), Manchester, 1993. http://dx.doi.org/10.15376/frc.1993.1.285.
Texte intégralEllis, A. D., et D. M. Spirit. « The use of GaInAsP amplifiers for 40 Gbit/s signal processing. » Dans Nonlinear Guided-Wave Phenomena. Washington, D.C. : Optica Publishing Group, 1993. http://dx.doi.org/10.1364/nlgwp.1993.pd.2.
Texte intégralWang, Ranran, Yin Cheng et Jing Sun. « Smart Fibers Based on Low Dimensional Conductive Materials ». Dans 2018 International Flexible Electronics Technology Conference (IFETC). IEEE, 2018. http://dx.doi.org/10.1109/ifetc.2018.8583915.
Texte intégralQu, Yunpeng, Tung Nguyen-Dang, Alexis Gerald Page, Wei Yan, Tapajyoti Das Gupta, Gelu Marius Rotaru, Rene M. Rossi, Valentine Dominique Favrod, Nicola Bartolomei et Fabien Sorin. « Stretchable Optical and Electronic Fibers via Thermal Drawing ». Dans 2018 International Flexible Electronics Technology Conference (IFETC). IEEE, 2018. http://dx.doi.org/10.1109/ifetc.2018.8583875.
Texte intégralRapports d'organisations sur le sujet "Fibres flexibles"
McKeehan, K. Composite molding of SPECTRA{reg_sign} extended chain polyethylene fibers in a flexible rubber matrix. Office of Scientific and Technical Information (OSTI), août 1997. http://dx.doi.org/10.2172/653949.
Texte intégralSiebenaler, Shane. PR-015-163766-R01 Field Testing of Distributed Acoustic Sensing Systems. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), juillet 2018. http://dx.doi.org/10.55274/r0011503.
Texte intégralAN ANALYTICAL METHOD FOR EVALUATING THE DEFLECTION AND LOAD-BEARING AND ENERGY ABSORPTION CAPACITY OF ROCKFALL RING NETS CONSIDERING MULTIFACTOR INFLUENCE. The Hong Kong Institute of Steel Construction, septembre 2022. http://dx.doi.org/10.18057/ijasc.2022.18.3.1.
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