Dissertations / Theses on the topic 'Composites material'
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Sinclair, Chad. "Co-deformation of a two-phase FCC/BCC material /." *McMaster only, 2001.
Find full textSiritanaratkul, Bhavin. "Enzyme-material composites for solar-driven reactions." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:55df8993-254b-4960-8ef4-fd9624206f3b.
Full textGuodong, Xu. "Fibre-cement hybrid composites." Thesis, University of Surrey, 1994. http://epubs.surrey.ac.uk/844012/.
Full textSacks, Serena. "Effects of thermal aging on the mechanical behavior of K3B matrix material and its relationship to composite behavior." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/18865.
Full textTeh, 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/.
Full textMarklund, Erik. "Micromechanism based material models for natural fiber composites /." Luleå : Luleå University of Technology, 2005. http://epubl.luth.se/1402-1757/2005/84.
Full textKruch, Serge. "Comportement global des materiaux composites viscoelastiques." Paris 6, 1988. http://www.theses.fr/1988PA06A006.
Full textJack, David Abram. "Advanced analysis of short-fiber polymer composite material behavior." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4363.
Full textThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on August 2, 2007) Includes bibliographical references.
Foston, Marcus Bernard. "Cyclic, tethered and nanoparticulate silicones for material modification." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24762.
Full textCommittee Chair: Dr. Haskell W. Beckham; Committee Member: Dr. Anselm Griffin; Committee Member: Dr. Johannes Leisen; Committee Member: Dr. Sankar Nair; Committee Member: Dr. Uwe Bunz.
Yar, Mazher Ahmed. "Development of Nanostructured Tungsten Based Composites for Energy Applications." Doctoral thesis, KTH, Funktionella material, FNM, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-101319.
Full textQC 20120827
Karmarkar, Makarand Anand. "Smart material composites for magnetic field and force sensors." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/34686.
Full text
In this study, we focus on two composites systems: ferrite / Terfenol-D / nickel â lead zirconate titanate (magnetoelectric); and lanthanum strontium manganate (LSMO) â carbon nanotube (CNT) â silicon carbonitride (SiCN) (piezoresistive). Recently, Islam et al. have reported a magnetic field sensor based on a piezoelectric transformer with a ring- dot electrode pattern. In this thesis, this design was further investigated by synthesizing Terfenol-D / PZT laminate. The fabricated sensor design consists of a ring-dot piezoelectric transformer laminated to a magnetostrictive disc and its working principle is as follows: When a constant voltage is applied to the ring section of the piezoelectric layer at resonance, a stress is induced in the dot section. Then, if an external magnetic object is introduced in the vicinity of the dot section, the effective elastic stiffness is increased, altering the resonance frequency (fr). The variation of resonance frequency and magnitude of output voltage with applied magnetic field was characterized and analyzed to determine the sensitivity. The sensor showed a shift of ~1.36Hz/Oe over the frequency range of 137.4
Lastly, the thesis investigates the piezoresistive properties of LSMO â CNT â SiCN composites that were synthesized by the conventional ceramic sintering technique. Recent investigations have shown that CNTs and SiCN have high piezoresistive coefficient. DSC/TGA results showed that pure CNTs decompose at temperatures of ~600oC, however, SiCN was found to sustain the sintering temperature of 1300oC. Thus, LSMO â SiCN composites were used for the final analysis. A fractional resistivity change of 4% was found for LSMO â 12.5 vol% SiCN composites which is much higher compared to that of unmodified LSMO.
Master of Science
Mohammed, Reza Dave. "Material properties and fracture mechanisms of epoxy nano-composites." Thesis, Imperial College London, 2007. http://hdl.handle.net/10044/1/11296.
Full textHerlocker, Jon Alan. "Dynamic response and material processing of photorefractive polymer composites." Diss., The University of Arizona, 2000. http://hdl.handle.net/10150/284284.
Full textDavid, Claire. "Modélisation de coques composites multicouches." Cachan, Ecole normale supérieure, 1996. http://www.theses.fr/1996DENS0027.
Full textNestler, Daisy Julia. "Beitrag zum Thema VERBUNDWERKSTOFFE - WERKSTOFFVERBUNDE." Doctoral thesis, Universitätsbibliothek Chemnitz, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-134459.
Full textComplex property profiles require increasingly advanced composite materials and material compounds, including the rapid deployment of new production technologies, because the monolithic material or a single material can no longer satisfy today's complex requirements. Future material systems are fundamentally important to growth markets, in which they have an economically key position. Tailor-made lightweight materials (tailor-made composites) with an adapted design are needed. These concepts have to be developed to design the optimum combination of components. This requires material-specific knowledge and the ability to make correlations, as well as the design of complex technologies. Continuous large-scale and mass production (in-line, in-situ), thus reducing the costs of previously expensive composite materials and material compounds, is also necessary. The present work spans the entire field of composite materials and material compounds in a comparable and comparative manner and abstract form. A summarizing publication on this still very new, but already broad-based scientific field is not yet available. The separation of the individual, firmly divided groups of the composite materials is the reason for this. Cross-connections are rarely made. The objective of this work is to compensate to some extent for this deficiency. Special consideration is given to definitions and classifications, manufacturing processes and the properties of the materials. Clear structures and overviews are presented. Mapping established and new technologies will contribute to the stability of the terms "mixed material compounds" and "hybrid material compounds". In addition, the problem of recycling and recycling technologies is discussed. In summary, areas for future research and development projects will be specified. Generalized concepts for tailor-made composite materials and material compounds are proposed ("adjusting screw scheme") with an eye toward various production routes, especially for semi-finished products and components, and the associated findings. These general material concepts are applied to own current research projects pertaining to metal-matrix and polymer-matrix composites and hybrid material compounds. Research fields for future projects are extrapolated. Particular attention is paid to hybrid material compounds as the mainstay of future developments in lightweight construction. In-line and in-situ processes play a key role for large-scale, cost- and resource-efficient production
Swanprateeb, Jintamai. "Creep behaviour of hydroxyapatite reinforced polythylene composites." Thesis, Queen Mary, University of London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.307513.
Full textNazhat, 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.
Full textKato, Junji. "Material optimization for fiber reinforced composites applying a damage formulation." Stuttgart Inst. für Baustatik und Baudynamik, 2010. http://d-nb.info/1001076508/34.
Full textO'Neal, Justin Earl. "Thermal protection of high temperature polymer-material-carbon fiber composites." Texas A&M University, 2005. http://hdl.handle.net/1969.1/3189.
Full textJiba, Zetu. "Coating processes towards selective laser sintering of energetic material composites." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/79246.
Full textDissertation (MSc)--University of Pretoria, 2019.
Chemical Technology
MSc
Unrestricted
Phillips, Lakin N. "Evaluation of Ohio Coal as Filler Material for Thermoplastic Composites." Ohio University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1512564409202248.
Full textHowarth, Jack. "Material characterisation and interface optimisation of recycled carbon fibre composites." Thesis, University of Sheffield, 2012. http://etheses.whiterose.ac.uk/4042/.
Full textRibes, Hervé. "Microstructure de composites aluminium-carbure de silicium après traitements thermomécaniques." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0084.
Full textLeigh, Benjamin David. "Strength degradation of carbon-carbon composites for aircraft brakes." Thesis, University of Bath, 1999. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285332.
Full textKortschot, Mark Timothy. "Damage mechanics of carbon fibre composites." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293010.
Full textJelf, Peter Myles. "Compressive failure of aligned fibre composites." Thesis, University of Cambridge, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281932.
Full textWang, Aiguo. "Abrasive wear of metal matrix composites." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305516.
Full textCHEN, Yiqing. "POLISHING OF POLYCRYSTALLINE DIAMOND COMPOSITES." Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/3682.
Full textCHEN, Yiqing. "POLISHING OF POLYCRYSTALLINE DIAMOND COMPOSITES." University of Sydney, 2007. http://hdl.handle.net/2123/3682.
Full textThis 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.
Mokhtari, Morgane. "FeCr composites : from metal/metal to metal/polymer via micro/nano metallic foam, exploitation of liquid metal dealloying process." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI088/document.
Full textNanoporous metals have attracted considerable attention for their excellent functional properties. The first developed technique used to prepare such nanoporous noble metals is dealloying in aqueous solution. Porous structures with less noble metals such as Ti or Fe are highly desired for various applications including energy-harvesting devices. The less noble metals, unstable in aqueous solution, are oxidized immediately when they contact water at a given potential so aqueous dealloying is only possible for noble metals. To overcome this limitation, a new dealloying method using a metallic melt instead of aqueous solution was developed. Liquid metal dealloying is a selective dissolution phenomenon of a mono-phase alloy solid precursor: one component (referred as soluble component) being soluble in the metallic melt while the other (referred as targeted component) is not. When the solid precursor contacts the metallic melt, only atoms of the soluble component dissolve into the melt inducing a spontaneously organized bi-continuous structure (targeted+sacrificial phases), at a microstructure level. This sacrificial phase can finally be removed by chemical etching to obtain the final nanoporous materials. Because this is a water-free process, it has enabled the preparation of nanoporous structures in less noble metals such as Ti, Si, Fe, Nb, Co and Cr. The objectives of this study are the fabrication and the microstructure and mechanical characterization of 3 different types of materials by dealloying process : (i) metal/metal composites (FeCr-Mg), (ii) porous metal (FeCr) (iii) metal/polymer composites (FeCr-epoxy resin). The last objective is the evaluation of the possibilities to apply liquid metal dealloying in an industrial context. The microstructure study was based on 3D observation by X-ray tomography and 2D analysis with electron microscopy (SEM, SEM-EDX, SEM-EBSD). To have a better understanding of the dealloying, the process was followed in situ by X-ray tomography and X-ray diffraction. Finally the mechanical properties were evaluated by nanoindentation and compression
Nestler, Daisy Julia. "Beitrag zum Thema VERBUNDWERKSTOFFE - WERKSTOFFVERBUNDE: Status quo und Forschungsansätze." Doctoral thesis, Universitätsverlag Chemnitz, 2012. https://monarch.qucosa.de/id/qucosa%3A20009.
Full textComplex property profiles require increasingly advanced composite materials and material compounds, including the rapid deployment of new production technologies, because the monolithic material or a single material can no longer satisfy today's complex requirements. Future material systems are fundamentally important to growth markets, in which they have an economically key position. Tailor-made lightweight materials (tailor-made composites) with an adapted design are needed. These concepts have to be developed to design the optimum combination of components. This requires material-specific knowledge and the ability to make correlations, as well as the design of complex technologies. Continuous large-scale and mass production (in-line, in-situ), thus reducing the costs of previously expensive composite materials and material compounds, is also necessary. The present work spans the entire field of composite materials and material compounds in a comparable and comparative manner and abstract form. A summarizing publication on this still very new, but already broad-based scientific field is not yet available. The separation of the individual, firmly divided groups of the composite materials is the reason for this. Cross-connections are rarely made. The objective of this work is to compensate to some extent for this deficiency. Special consideration is given to definitions and classifications, manufacturing processes and the properties of the materials. Clear structures and overviews are presented. Mapping established and new technologies will contribute to the stability of the terms "mixed material compounds" and "hybrid material compounds". In addition, the problem of recycling and recycling technologies is discussed. In summary, areas for future research and development projects will be specified. Generalized concepts for tailor-made composite materials and material compounds are proposed ("adjusting screw scheme") with an eye toward various production routes, especially for semi-finished products and components, and the associated findings. These general material concepts are applied to own current research projects pertaining to metal-matrix and polymer-matrix composites and hybrid material compounds. Research fields for future projects are extrapolated. Particular attention is paid to hybrid material compounds as the mainstay of future developments in lightweight construction. In-line and in-situ processes play a key role for large-scale, cost- and resource-efficient production.
Schclar, Noemi Alejandra. "Application of the Boundary Element Method to the structural analysis of three dimensional anisotropic material." Thesis, University of Portsmouth, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334408.
Full textLacour, Olivier. "Influence de la piézoélectricité sur l'absorption du son dans les milieux composites." Grenoble 1, 1989. http://www.theses.fr/1989GRE10058.
Full textKovacs, Christopher Joseph. "Influence of Material Properties and Processing on Stability and Protectability in Superconducting Cables and Composites." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1574650528575944.
Full textGupta, Gaurav. "Computational material science of carboncarbon : composites based on carbonaceous mesophase matrices." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=83865.
Full textKwak, Museok. "Microwave curing of carbon-epoxy composites : process development and material evaluation." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/39284.
Full textCarey, Tian. "Two-dimensional material inks and composites for printed electronics and energy." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/275609.
Full textGao, Xiaodong. "Effect of Negative Thermal Expansion Material Cubic ZrW2O8 on Polycarbonate Composites." University of Toledo / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1420473965.
Full textBrosious, Derek A. "Nonlinear material behavior and fatigue-accumulated damage of wood plastic composites." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Thesis/Fall2008/D_Brosious_120408.pdf.
Full textTitle from PDF title page (viewed on June 19, 2009). "Department of Civil and Environmental Engineering." Includes bibliographical references.
Kleczewska, Joanna. "Material aspects of exploitation of dental composites based on dimethacrylate resins." Thesis, Tours, 2011. http://www.theses.fr/2011TOUR4023/document.
Full textThe aim of this study was an attempt to clarify, how the morphology of dimethacrylate-based dental composite affects the properties of dental fillings. The experiments were carried out bidirectionally: I). The analysis of commercial samples; 2). Preparation ofhome made composites with using of new fillers.Morphology, tribological behavior. mechanical properties of surface layer and bactericidal action of composites were characterized. Some composites exhibit an increased resistance to abrasion during the first hour of tribological measurements. It proves the existence of the “surface layer” of a different nature than the bulk of material.The ‘bimodal’ morphology favors the best packing of filler particles in the matrix, resulting in higher wear resistance and fracture toughness of composites. Wollastonite is an interesting alternative to the commonly used fillers. Addition of bactericidal agents is effective against S. mutans, however, mechanical characteristics of these composites require fine-tuning
Santandrea, Mattia <1988>. "Bond behavior between fiber reinforced composites and quasi-brittle material interfaces." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amsdottorato.unibo.it/8645/1/Santandrea_Mattia_Tesi.pdf.
Full textJennings, Tracy Michelle. "Thermal fatigue of carbon fibre-bismaleimide composites." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.290903.
Full textKraus, Zachary. "Computational tools for preliminary material design of metals and polymer-ceramic nano composites." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51795.
Full textLee, Sang Jin. "Active, polymer-based composite material implementing simple shear." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2349.
Full textTremaine, Kellie Michelle. "MODAL ANALYSIS OF COMPOSITE STRUCTURES WITH DAMPING MATERIAL." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/823.
Full textSeraj, Salek Muhammad. "Reinforced and prestressed concrete members designed in accordance to the compressive-force path concept and fundamental material properties." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/7685.
Full textHouskamp, Joshua Robert Kalidindi Surya. "Microstructure sensitive design : a tool for exploiting material anisotropy in mechanical design /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/724.
Full textZhu, Honggang. "Development of epoxy-organoclay nanocomposite as high performance coating and as matrix material of durable GFRP composite for civil engineering applications /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202009%20ZHU.
Full textMora, D. F. (Diego Fernando). "Multifield-based modeling of material failure in high performance reinforced cementitious composites." Doctoral thesis, Universitat Politècnica de Catalunya, 2013. http://hdl.handle.net/10803/117529.
Full textPan, Qing. "Multi-scale modelling and material characterisation of textile composites for aerospace applications." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/33396/.
Full text