Tesis sobre el tema "Dynamic composites"
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Kandan, Karthikeyan. "Dynamic response of polyethylene composites". Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608106.
Texto completoGopalan, Sriram. "Quasi-static and dynamic mechanical characterization of reinforced polyurethane foam /". free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418024.
Texto completoGardham, Louise Marie. "Dynamic mechanical properties of polymer composites". Thesis, University of Leeds, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.395322.
Texto completoKlintworth, John Wilhelm. "Dynamic crushing of cellular solids". Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304395.
Texto completoStewart, Alistair. "Dynamic nanoindentation of various polymer nano-composites". Thesis, University of Ulster, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.593883.
Texto completoTirtom, İsmail Güden Mustafa. "Modeling Dynamic Behavior of Metal Matrix Composites/". [s.l.]: [s.n.], 2002. http://library.iyte.edu.tr/tezler/master/malzemebilimivemuh/T000141.rar.
Texto completoTan, Kian Sing. "Dynamic loading characteristics in metals and composites". Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FTan_Kian_Sing.pdf.
Texto completoThesis Advisor(s): Kwon, Young. Second Reader: Didoszak, Jarema. "December 2009." Description based on title screen as viewed on January 26, 2010. Author(s) subject terms: Tensile tests, Strain rate effects, Dynamic loading, Failure criterion. Includes bibliographical references (p. 37-38). Also available in print.
Elmore, Jennifer Susan. "Dynamic mechanical analysis of graphite/epoxy composites with varied interphases". Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-10312009-020414/.
Texto completoNazhat, Showan Najdat. "Dynamic mechanical characterisation of hydroxyapatite reinforced biomedical composites". Thesis, Queen Mary, University of London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267610.
Texto completoAttwood, Julia Patton. "Static and dynamic properties of polyethylene fibre composites". Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709355.
Texto completoBohn, Clayton Claverie. "Dynamic antifouling structures and actuators using EAP composites". [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0006640.
Texto completoSingh, Mary Margaret. "Dynamic properties of fibre-reinforced polymers exposed to aqueous conditions". Thesis, University of Bristol, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385659.
Texto completoShanmugam, Arun Kumar. "Dynamic mechanical analysis and impact testing of phenolic composites". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ31638.pdf.
Texto completoKwon, Young W. "A numerical study of dynamic crack propagation in composites". Thesis, Monterey, California. Naval Postgraduate School, 1992. http://hdl.handle.net/10945/23735.
Texto completoWang, J., S. Dong, Ashraf F. Ashour, X. Wang y B. Han. "Dynamic mechanical properties of cementitious composites with carbon nanotubes". Elsevier, 2019. http://hdl.handle.net/10454/17465.
Texto completoThis paper studied the effect of different types of multi-walled carbon nanotubes (MWCNTs) on the dynamic mechanical properties of cementitious composites. Impact compression test was conducted on various specimens to obtain the dynamic stress-strain curves and dynamic compressive strength as well as deformation of cementitious composites. The dynamic impact toughness and impact dissipation energy were, then, estimated. Furthermore, the microscopic morphology of cementitious composites was identified by using the scanning electron microscope to show the reinforcing mechanisms of MWCNTs on cementitious composites. Experimental results show that all types of MWCNTs can increase the dynamic compressive strength and ultimate strain of the composite, but the dynamic peak strain of the composite presents deviations with the MWCNT incorporation. The composite with thick-short MWCNTs has a 100.8% increase in the impact toughness, and the composite with thin-long MWCNTs presents an increased dissipation energy up to 93.8%. MWCNTs with special structure or coating treatment have higher reinforcing effect to strength of the composite against untreated MWCNTs. The modifying mechanisms of MWCNTs on cementitious composite are mainly attributed to their nucleation and bridging effects, which prevent the micro-crack generation and delay the macro-crack propagation through increasing the energy consumption.
Herlocker, Jon Alan. "Dynamic response and material processing of photorefractive polymer composites". Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/284284.
Texto completoLoveless, Thomas A. "Mechanical Properties of Kenaf Composites Using Dynamic Mechanical Analysis". DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4310.
Texto completoKnowles, Stephen. "Dynamic analysis and the use of composite materials in cricket bat design". Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.270102.
Texto completoCHEN, Yiqing. "POLISHING OF POLYCRYSTALLINE DIAMOND COMPOSITES". Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/3682.
Texto completoCHEN, Yiqing. "POLISHING OF POLYCRYSTALLINE DIAMOND COMPOSITES". University of Sydney, 2007. http://hdl.handle.net/2123/3682.
Texto completoThis thesis aims to establish a sound scientific methodology for the effective and efficient polishing of thermally stable PCD composites (consisting of diamond and SiC) for cutting tools applications. The surface roughness of industrial PCD cutting tools, 0.06 μm Ra is currently achieved by mechanical polishing which is time consuming and costly because it takes about three hours to polish a 12.7 mm diameter PCD surface. An alternative technique, dynamic friction polishing (DFP) which utilizes the thermo-chemical reactions between the PCD surfaces and a catalytic metal disk rotating at high peripheral speed has been comprehensively investigated for highly efficient abrasive-free polishing of PCD composites. A special polishing machine was designed and manufactured in-house to carry out the DFP of PCD composites efficiently and in a controllable manner according to the requirements of DFP. The PCD polishing process and material removal mechanism were comprehensively investigated by using a combination of the various characterization techniques: optical microscopy, SEM and EDX, AFM, XRD, Raman spectroscopy, TEM, STEM and EELS, etc. A theoretical model was developed to predict temperature rise at the interface of the polishing disk and PCD asperities. On-line temperature measurements were carried out to determine subsurface temperatures for a range of polishing conditions. A method was also developed to extrapolate these measured temperatures to the PCD surface, which were compared with the theoretical results. The material removal mechanism was further explored by theoretical study of the interface reactions under these polishing conditions, with particular emphasis on temperature, contact with catalytic metals and polishing environment. Based on the experimental results and theoretical analyses, the material removal mechanism of dynamic friction polishing can be described as follows: conversion of diamond into non-diamond carbon takes place due to the frictional heating and the interaction of diamond with catalyst metal disk; then a part of the transformed material is detached from the PCD surface as it is weakly bonded; another part of the non-diamond carbon oxidizes and escapes as CO or CO2 gas and the rest diffuses into the metal disk. Meanwhile, another component of PCD, SiC also chemically reacted and transformed to amorphous silicon oxide/carbide, which is then mechanically or chemically removed. Finally an attempt was made to optimise the polishing process by investigating the effect of polishing parameters on material removal rate, surface characteristics and cracking /fracture of PCD to achieve the surface roughness requirement. It was found that combining dynamic friction polishing and mechanical abrasive polishing, a very high polishing rate and good quality surface could be obtained. The final surface roughness could be reduced to 50 nm Ra for two types of PCD specimens considered from pre-polishing value of 0.7 or 1.5 μm Ra. The polishing time required was 18 minutes, a ten fold reduction compared with the mechanical abrasive polishing currently used in industry.
Yalcin, Omer Fatih. "A Dynamic Theory For Laminated Composites Consisting Of Anisotropic Layers". Phd thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607116/index.pdf.
Texto completoit contains all kinds of deformation modes of the layered composite
its validity range for frequencies and wave numbers may be enlarged by increasing, respectively, the orders of the theory and interface conditions. CM is assessed by comparing its prediction with the exact for the spectra of harmonic waves propagating in various directions of a two-phase periodic layered composite, as well as, for transient dynamic response of a composite slab induced by waves propagating perpendicular to layering. A good comparison is observed in the results and it is found that the model predicts very well the periodic structure of spectra with passing and stopping bands for harmonic waves propagating perpendicular to layering. In view of the results, the physical significance of Floquet wave number is also discussed in the study.
Chalivendra, Vijaya Bhaskar. "Static and dynamic constitutive behavior and fracture of particulate composites /". View online ; access limited to URI, 2003. http://0-wwwlib.umi.com.helin.uri.edu/dissertations/dlnow/3112114.
Texto completoXiaozhuang, Zhou [Verfasser]. "Dynamic polydimethylsiloxane based polymer composites for functional materials / Zhou Xiaozhuang". Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2020. http://d-nb.info/1224474864/34.
Texto completoMudigonda, Ashwin. "Static and Dynamic Characterization of Ionic Polymer Metal Composites - 'Artificial Muscles'". Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1142538201.
Texto completoBarker, Daniel Keith. "Active dynamic response tuning of adaptive composites utilizing embedded nitinol actuators". Thesis, This resource online, 1989. http://scholar.lib.vt.edu/theses/available/etd-03042009-041038/.
Texto completoOkoli, Okenwa Obinna Ifeanyichukwu-Izejiora. "Experimental determination of transient dynamic response of fibre reinforced polymer composites". Thesis, University of Warwick, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273471.
Texto completoWilloughby, Natasha. "Dynamic homogenization for the elastic properties of periodic and random composites". Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/dynamic-homogenization-for-the-elastic-properties-of-periodic-and-random-composites(da82e607-bc1f-40e9-8e62-ec5fbca1f68f).html.
Texto completoBhutta, Salman Ahmed. "Analytical modeling of hybrid composite beams". Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-11102009-020112/.
Texto completoNie, Zifeng. "Advanced Mesomechanical Modeling of Triaxially Braided Composites for Dynamic Impact Analysis with Failure". University of Akron / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=akron1407129124.
Texto completoSen, Ozge. "Transient Dynamic Response Of Viscoelastic Cylinders Enclosed In Filament Wound Cylindrical Composites". Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606412/index.pdf.
Texto completowhereas, the rocket motor case is a fiber-reinforced filament wound cylindrical composite. Method of characteristics is employed to obtain the solutions. Method of characteristics is suitable because the governing equations are hyperbolic. The method is amenable to numerical integration and different boundary, interface and initial conditions can be handled easily.
Samur, Algan. "Flexible piezoelectric composites and concepts for bio-inspired dynamic bending-twisting actuation". Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47680.
Texto completoAl-Khodairi, Fahad Abdul Aziz. "Static and dynamic properties of unidirectional hybrid resin and hybrid fibre composites". Thesis, Brunel University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296214.
Texto completoBarakati, Amir. "Dynamic interactions of electromagnetic and mechanical fields in electrically conductive anisotropic composites". Diss., University of Iowa, 2012. https://ir.uiowa.edu/etd/3562.
Texto completoLin, Jun. "Nonlinear transient analysis of isotropic and composite shell structures under dynamic loading by SPH method". Phd thesis, Université de Technologie de Compiègne, 2014. http://tel.archives-ouvertes.fr/tel-00997702.
Texto completoKeller, Andrew R. "An experimental analysis of the dynamic failure resistance of TiB₂/A1₂O₃ composites". Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/16657.
Texto completoTeh, Kuen Tat. "Impact damage resistance and tolerance of advanced composite material systems". Diss., This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-06062008-170512/.
Texto completoMarquina, Edgar Alberto. "Use of Dynamic Mechanical Testing, WAXD and SEM Image Analysis to Study the Properties of Polypropylene/Calcium Carbonate Nanocomposites". University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1269363578.
Texto completoAngelini, Nicholas Alexander. "Simulating Dynamic Vehicle Maneuvers Using Finite Elements For Use In Design Of Integrated Composite Structure". Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/46995.
Texto completoMaster of Science
Slater, Carl. "The static and dynamic behaviour of carbon fibre composites used in golf club shafts". Thesis, University of Birmingham, 2012. http://etheses.bham.ac.uk//id/eprint/3476/.
Texto completoRoy, Saroj K. (Saroj Kumar). "Dynamic mechanical relaxations of ultradrawn polyethylene and polypropylene films". Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72813.
Texto completoKendall, Peter K. "Numerical study of effects of fluid-structure interaction on dynamic responses of composite plates". Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Sep/09Sep%5FKendall.pdf.
Texto completoThesis Advisor(s): Kwon, Young W. "September 2009." Description based on title screen as viewed on 6 November 2009. Author(s) subject terms: Fluid-structure interaction, composite, carbon fiber composite, dynamic response, finite element. Includes bibliographical references (p. 95-96). Also available in print.
Coussa, Fabien. "Du comportement dynamique de matériaux composites tissés à matrice polyamide". Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM063/document.
Texto completoCar manufacturers are looking for solutions to lighten their vehicles in order to meet pollutant emission requirements – for thermal engines – or to extend their range – for electric vehicles. Composite materials, among other solutions, offer excellent strength and durability. However increased per unit cost and manufacturing time are among the main drawbacks material producers have to overcome in order to make composite solutions viable for mass-market production. In that prospect, woven glass fibers and thermoplastic matrices respectively are more serious contenders than aeronautic-grade composites. The objective application is a door reinforcement module, whose main function is to act as a safety net, adding its own stiffness and strength to that of the steel door and preventing any foreign object from entering the passenger compartment. A main preoccupation is therefore the constitutive behavior of that material under strain rates varying from 10-3 s-1 to approximately 50 s-1. The study objective is to develop a physically-based constitutive law modelling in order to take into account strain-rate sensitivity on behavior. A new and consistent experimental procedure aiming at capturing the influence of speed solicitation on non-linear internal mechanisms is developed and allows identifying non-linear constitutive law parameters over a wide range of strain rates until failure. Resulting mainly from direct evaluations and direct identification procedure, the accuracy of the implemented constitutive law is guaranteed through numerical computations involving effects of material and structural heterogeneities
Yilmaz, Faris Sad. "Polyaniline: Synthesis, Characterization, Solution Properties, And Composites". Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608598/index.pdf.
Texto completos modulus of polyaniline-filled low density polyethylene composites became poorer as polyaniline content increased. Moreover, a sudden increase in the electrical conductivity with increasing polyaniline contents was also observed. The conductivity of the tubular composites of multi wall nanotubes (MWNTs)-filled polyaniline increased with increasing MWNTs loading, and became weakly temperature dependent. The morphological analysis indicated that the MWNTs were well dispersed and isolated, and the tubes became crowded proportionally to MWNTs weight percent used in the composites.
Chitrakar, Rojer. "Fabrication and Performance Evaluation of Porous Microsphere Filled Epoxy Composites". OpenSIUC, 2021. https://opensiuc.lib.siu.edu/theses/2882.
Texto completoLegrand, Aurélie. "Nanocharges fonctionnelles pour Vitrimères et Catalyse". Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066427/document.
Texto completoThe control of the interactions between particles and their environment is essential when dealing with colloids in order to reach desired properties. In this study, reversible covalent bonds were used as interfacial interactions in two systems: vitrimer composite materials and nanocatalysis in solution. The aim of this work was to develop materials which present original properties thanks to interfacial dynamic bonds. In composites, the introduction of dynamic covalent bonds between a vitrimer matrix and the fillers enables to improve mechanical properties while preserving vitrimer properties. Two vitrimer matrices based on two different exchange reactions, transesterification or transimination, have been studied. Imine bonds are reversible bonds that can dissociate in presence of water. We demonstrate that polyimine vitrimers can be reshaped and recycled under mild conditions. The reversibility of the imine bond can also be used to control the stability of a colloidal dispersion. Indeed, grafting of polymers on particles surface through reversible covalent bonds give them steric stabilization in good solvent of the chains. Dissocation of these bonds triggers detachment of the polymer chains and induces particle aggregation. This concept was applied to a catalytic system composed of palladium nanoparticles adsorbed onto silica particles. Polymer chains not only improve the dispersion of the whole catalytic system but also limit the leaching and aggregation of the palladium nanoparticles. As a consequence, the catalytic efficiency of the particles can be preserved over several cycles
Shirinbayan, Mohammadali. "Étude du comportement mécanique et de l’endommagement de divers matériaux composites smc soumis à des chargements de type dynamique, fatigue et dynamique post-fatigue". Thesis, Paris, ENSAM, 2017. http://www.theses.fr/2017ENAM0013/document.
Texto completoClassically, crash design of automotive composite structures made of discontinuous reinforcements such as SMC is usually based on experimental data obtained from virgin materials without any history of loading. However, crash events always occur after a few years of use during which composite structure is generally subjected to more or less important fatigue loading. Taking into account of a potential pre-damage in fatigue becomes essential if we want to stay realistic. Moreover, new formulations of SMC composites have been developed recently. Up to now, their fatigue and dynamic behavior were never being explored. This study, of a mostly experimental nature, aims to provide the knowledge necessary for design of structures made of various SMC formulations including A-SMC and LD-SMC. The first one is a vinylester matrix reinforced with a high content of glass fibers (50%). The second corresponds to a standard SMC formulation in which we added a high content of hollow glass micro-sphere in order to reduce density. A systematic multi-scale analysis allows to highlight the influence of the microstructure on damage phenomena under quasi-static, dynamic and fatigue loading. Original experimental methods are developed to correlate these mechanisms to the observed macroscopic behavior. Optimized dynamic tests are performed at strain rate up to 80 s-1 and highlight a visco-damageable behavior for the two SMC materials in study. Damage threshold delay and reduction of damage kinetics observed at the macroscopic scale are directly correlated to the threshold and kinetic of damage development observed at the local scale such as fiber-matrix or matrix-microsphere interfaces, matrix micro-cracking and pseudo-delamination between the bundles of glass fiber. Moreover, a similar multi-scale analysis is also performed under fatigue loading in which the frequency ranges from 10 to 100 Hz. A study of the influence of the self-heating phenomenon on the fatigue damage behavior of A-SMC is proposed. Finally, an original analysis of the remaining dynamic properties of samples which were previously submitted to fatigue loading until different levels of lifetime highlights a strong influence of the history of the loading on the strain rate sensitivity of the A-SMC. Considering the high contribution of this study in term of comprehension of the phenomena involved in the mechanical response of SMC materials, all of the experimental findings of this study provide the physical background crucial to build structural design tools for SMC subjected to cyclic and dynamic loading
Samant, Gajanan Balkrishna. "Verification of the "Energy Accumulation in Waves Travelling through a Checkerboard Dielectric Material Structure in Space-time" Using Spice Simulations". Digital WPI, 2009. https://digitalcommons.wpi.edu/etd-theses/1210.
Texto completoMeftah, Hassen. "Etude du comportement dynamique couplé au vieillissement des composites totalement recyclés à renfort carbone : de la caractérisation à la modélisation". Thesis, Paris, ENSAM, 2018. http://www.theses.fr/2018ENAM0014/document.
Texto completoIn the automotive sector, integrating more and more recycled composite materials while improving the initial performance and decreasing the carried masses becomes a compromise that needs to be addressed. Moreover, structural parts made of composite materials intended for crash are often subjected to environmental conditions, including moderately high temperatures, capable of causing gradual physico-chemical degradation. Thus, to ensure better design and durability of parts, it is important to understand the influence of thermal aging on the dynamic properties of materials. To this end, this work aims to couple the physics of oxidative degradation kinetics and the multi-scales mechanical behavior of a new fully recycled composite based on a polypropylene matrix and carbon fibers. The first axis of the study is dedicated to the elaboration, the physicochemical, microstructural and mechanical characterization of several formulations of composites. Once the optimal composite is selected, a hybrid experimental and numerical methodology is s is developed in order to characterize the dynamic properties at high strain rates reaching 100 s-1. The second axis of this work is focused on the study of the influence of thermo-oxidation on the physicochemical and mechanical properties at different strain rates of the optimal composite and its matrix. The resulting experimental has allowed the identification of a kinetic model parameters based on a mechanistic scheme. Furthermore, a qualitative and quantitative study of the effect of aging on the damage mechanisms has been carried out at a microscopic scale in order to establish a damage law linking, for a given imposed strain, the local damage density to the concentration of the oxidation products. The results of this study highlight the possibility of developing behavioral laws affected by the parameters of kinetic models describing the evolution of the physicochemical state of the composite during aging
Zedde, Nicola. "Dynamic mechanical-thermal, microstructural and mechanical analysis of ultra-light polymer-metal composites: influence of forming". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016.
Buscar texto completoTan, Ke Khieng. "Low Strain Rates Behaviour of Carbon Nanotube Enhanced Bagasse-Epoxy Polymer Composites for Dynamic Structure Applications". Thesis, Curtin University, 2020. http://hdl.handle.net/20.500.11937/84126.
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