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Thèses sur le sujet « Fiber reinforced metal »

Auteur : Grafiati

Publié le 25 mai 2024

Mis à jour le 31 juillet 2025

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1

Al-lami, Karrar Ali. "Experimental Investigation of Fiber Reinforced Concrete Beams." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2296.

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Shear strength of fiber reinforced concrete beams was studied in this research project. Three types of fibers were examined: hooked-end steel fiber, crimped-steel fiber, and crimped-monofilament polypropylene fibers. The experimental program included five beam specimens. Two of the beams were control specimens in which one was reinforced with minimum shear reinforcement according to ACI 318, while the other one did not have any shear reinforcement. Each one of the other three specimens was reinforced with one of the above mentioned fibers by 1% volumetric ratio. In addition to the beam specime

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2

Osiecki, Tomasz, Colin Gerstenberger, Holger Seidlitz, Alexander Hackert, and Lothar Kroll. "Behavior of Cathodic dip Paint Coated Fiber Reinforced Polymer/Metal Hybrids." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-175536.

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Increasing mechanical, economic and environmental requirements lead to multi material designs, wherein different classes of materials and manufacturing processes are merged to realize lightweight components with a high level of functional integration. Particularly in automotive industry the use of corresponding technologies will rise in the near future, as they can provide a significant contribution to weight reduction, energy conservation and therefore to the protection of natural resources. Especially the use of continuous fiber reinforced polymers (FRP) with thermoplastic matrices offers ad

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3

Yang, Yanzhe. "Fabrication of Long-Fiber-Reinforced Metal Matrix Composites Using Ultrasonic Consolidation." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/213.

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This research is a systematic study exploring a new fabrication methodology for long-fiber-reinforced metal matrix composites (MMCs) using a novel additive manufacturing technology. The research is devoted to the manufacture of long-fiber-reinforced MMC structures using the Ultrasonic Consolidation (UC) process. The main objectives of this research are to investigate the bond formation mechanisms and fiber embedment mechanisms during UC, and further to study the effects of processing parameters on bond formation and fiber embedment, and the resultant macroscopic mechanical properties of UC-mad

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4

Lam, Su Ki. "Design of tough, metal fibre reinforced ceramics for use at high temperatures." Thesis, University of Cambridge, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708380.

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5

Funn, John V. "Creep behavior of the interface region in continuous fiber reinforced metal-matrix composites." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA341255.

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Thesis (M.S. in Mechanical Engineering) Naval Postgraduate School, September 1997.<br>"September 1997." Thesis advisor(s): Indranath Dutta. Includes bibliographical references (p. 91-93). Also available online.

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6

Richard, Brandon Demar. "Thermal Infrared Reflective Metal Oxide Sol-Gel Coatings for Carbon Fiber Reinforced Composite Structures." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4569.

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Recent trends in composite research include the development of structural materials with multiple functionalities. In new studies, novel materials are being designed, developed, modified, and implemented into composite designs. Typically, an increase in functionality requires additional material phases within one system. The presence of excessive phases can result in deterioration of individual or overall properties. True multi-functional materials must maintain all properties at or above the minimum operating limit. In this project, samples of antimony and cobalt-doped tin oxide (ATO(Co2

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7

Butler, Joseph Edmund. "In-situ Fiber Strength Distribution in NextelTM 610 Reinforced Aluminum Composites." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/32433.

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MetPreg, a composite developed by Touchstone Research Laboratories (Tridelphia, WV), is an aluminum metal matrix composite reinforced by continuous NextelTM 610 alumina fibers. The question is, after processing, are the NextelTM fibers affected in any way that their strengthening contribution to the composite is reduced? From experimentation and statistical analysis, a strength distribution of pre-processed NextelTM 610 fibers is formed and an empirical correlation is developed relating strength to the observed flaw size on the failed single fibers. This correlation is then independently ap

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8

Durkin, Craig Raymond. "Low-Cost Continuous Production of Carbon Fiber-Reinforced Aluminum Composites." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19857.

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The research conducted in this study was concerned with the development of low-cost continuous production of carbon fiber/aluminum composites. Two coatings, alumina and zirconia, were applied to the fibers to protect against interfacial degradation. They were applied using a sol-gel method and common metal salts. The fibers were infiltrated with molten aluminum using an ultrasound sonicator. The resultant composites were well-infiltrated and were tested in tension to determine their mechanical properties. Strengths were only 15-35% of the theoretical values predicted by the rule of mixtures. T

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9

Belghiti, Moulay El Mehdi. "Influence of steel fibres on response of beams." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100222.

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The following thesis presents the results of six full scale beams tests as part of a research program conducted at McGill University on the effect of steel fibres on the shear capacity of a beam with an aid ratio greater than 2.5. The test specimens had the following dimensions: 4400 mm long, 300 mm wide and 500 mm long. The beams had 4-25M bottom reinforcing bars and 2-20M top reinforcing bars. Two series were designed with different reinforcing details: the "BA" series contained transverse reinforcement spaced at 275 mm center to center while the "BB" series had no transverse reinforcement.

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10

Tu, Zhiqiang. "Fabrication and Mechanical Properties of Carbon Fiber Reinforced Aluminum Matrix Composites by Squeeze Casting." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/40523.

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Rapid modern technological changes and improvements bring great motivations in advanced material designs and fabrications. In this context, metal matrix composites, as an emerging material category, have undergone great developments over the past 50 years. Their primary applications, such as automotive, aerospace and military industries, require materials with increasingly strict specifications, especially high stiffness, lightweight and superior strength. For these advanced applications, carbon fiber reinforced aluminum matrix composites have proven their enormous potential where outstanding

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11

Foster, Glenn C. "Tensile and Flexure Strength of Unidirectional Fiber-Reinforced Composites: Direct Numerical Simulations and Analytic Models." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36688.

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A Local Load Sharing (LLS) model recently developed by Curtin and co-workers for the numerical simulation of tensile stress-strain behavior in fiber-reinforced composites is used to predict the tensile strength of metal matrix composites consisting of a Titanium matrix and unidirectionally aligned SiC fibers. This model is extended to include the effects of free boundary conditions and non-constant load gradients and then used to predict the strength of a Ti-6Al-4V matrix reinforced with Sigma SiC fibers under 4-point flexure testing. The predicted tensile and flexure strengths agree ver

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12

King, Joel David. "Characterization of the corrosion of a P-130x graphite fiber reinforced 6063 aluminum metal matrix composite." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/25734.

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13

Keles, Ozgur. "Production And Characterization Of Alumina Fiber Reinforced Squeeze Cast Aluminum Alloy Matrix Composites." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609726/index.pdf.

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The aim of the present study was to investigate the effects of different levels of Saffil alumina fiber addition, magnesium content in aluminum alloy matrix and casting temperature on the mechanical behavior, microstructure and physical properties of short fiber reinforced aluminum matrix composites. The main alloying element silicon was kept constant at 10 wt%. Magnesium contents were selected as 0.3 wt% and 1 wt%. Saffil alumina fiber preforms varied from 10 to 30 vol%. The casting temperatures were fixed at 750 &deg<br>C and 800 &deg<br>C. Micro porosity was present at the fiber-fiber int

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14

Turkyilmaz, Gokhan. "Processing And Assessment Of Aluminum Ceramic Fiber Reinforced Aluminum Metal Matrix Composite Parts For Automotive And Defense Applications." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610751/index.pdf.

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The aim of this study was to produce partially reinforced aluminum metal matrix composite components by insertion casting technique and to determine the effects of silicon content, fiber vol% and infiltration temperature on the mechanical properties of inserts, which were the local reinforcement parts of the components. Silicon content of alloys was selected as 7 wt% and 10 wt%. The reinforcement material, i.e. Saffil fiber preforms, had three different fiber vol% of 20, 25 and 30 vol% respectively. The infiltration temperatures of composite specimens were fixed as 750 &deg<br>C and 800 &deg<b

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15

Bandi, Raghava. "Effect of Surface Treatment on the Performance of CARALL, Carbon Fiber Reinforced Aluminum Dissimilar Material Joints." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1011869/.

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Fiber-metal laminates (FML) are the advanced materials that are developed to improve the high performance of lightweight structures that are rapidly becoming a superior substitute for metal structures. The reasons behind their emerging usage are the mechanical properties without a compromise in weight other than the traditional metals. The bond remains a concern. This thesis reviews the effect of pre-treatments, say heat, P2 etch and laser treatments on the substrate which modifies the surface composition/roughness to impact the bond strength. The constituents that make up the FMLs in our pres

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16

Zhang, Teng. "Elaboration and characterization of functionalized hybrid carbon fiber reinforced composites (CFRCs) for innovative applications." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://www.theses.fr/2024UBFCA005.

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Les besoins d’allègement de poids dans le transport principalement en vue d’une réduction des émissions des gaz à effet de serre placent les composites à renfort de fibres de carbone (CFRC) comme matériaux potentiels. La fonctionnalisation de ces matériaux leur confèrerait une valeur ajoutée et de nouvelles perspectives d’application. La fonctionnalisation des composites CFRC implique de nombreux travaux de recherche qui se heurtent à une problématique de la décohésion du dépôt de surface en raison de la faible adhérence CFRC-dépôt, car les deux parties étant respectivement en polymère et en m

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17

Canino-Vazquez, Iván R. "Aerodynamic Load Characteristics Evaluation and Tri-Axial Performance Testing on Fiber Reinforced Polymer Connections and Metal Fasteners to Promote Hurricane Damage Mitigation." FIU Digital Commons, 2009. http://digitalcommons.fiu.edu/etd/128.

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Damages during extreme wind events highlight the weaknesses of mechanical fasteners at the roof-to-wall connections in residential timber frame buildings. The allowable capacity of the metal fasteners is based on results of unidirectional component testing that do not simulate realistic tri-axial aerodynamic loading effects. The first objective of this research was to simulate hurricane effects and study hurricane-structure interaction at full-scale, facilitating better understanding of the combined impacts of wind, rain, and debris on inter-component connections at spatial and temporal scales

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18

Ehmaida, Mutyaa M. "Friction and lubrication behaviour of hip resurfacing metal-on-metal and ZTA ceramic on CFR peek implants with various diameters and clearances : friction and lubrication behaviour of hip resurfacing Co-Cr-Mo and zirconia toughened alumina ceramic heads against carbon fibre reinforced poly-ether-ether-ketone cups with various diameters and clearances have been investigated using serum-based lubricants." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/5665.

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Total hip joint prostheses made of CoCrMo heads versus ultra high molecular weight polyethylene (UHMWPE) cups have a limited lifetime, mainly due to the wear of the UHMWPE cups as a result of high friction between the articulating surfaces leading to osteolysis and implant loosening with revision surgery becoming inevitable in more active patients. Tribology plays an important role in developing the design, minimizing wear and reducing friction of hip joint prostheses in order to improve their long-term performance, with good lubricating properties. Metal-on-metal hip resurfacing prostheses ha

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19

Silva, Marcelo Gomes da. "Distribuição de tensões em próteses parciais fixas posteriores livres de metal com retentores intracoronários: análise em elementos finitos." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2764.

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Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro<br>Para reabilitar a ausência de um elemento dentário posterior, as próteses parciais fixas (PPF) com retentores intracoronários são uma alternativa aos implantes osseointegrados. O objetivo deste estudo foi avaliar a distribuição de tensões nessas próteses com três combinações de materiais: cerâmica de zircônia parcialmente estabilizada por ítria (ZPEI) revestida por cerâmica de fluorapatita (α), cerâmica de dissilicato de lítio (β) ou compósito fibrorreforçado (γ). Na composição α, foram analisadas a presença ou au

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20

DEL, TORO RIVERA RAUL. "Comportement des noeuds d'ossature en beton arme sous sollicitations alternees." Marne-la-vallée, ENPC, 1988. http://www.theses.fr/1988ENPCA004.

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Etude des joints sous sollicitation sismique sur la base de trois essais sur corps d'epreuve de grande dimensionm en analysant les mecanismes des glissements constates des armatures principales dans la partie centrale du noeud, et le type de rupture a laquelle cela donne lieu; etude sur la base d'un essai de la possibilite d'utiliser un beton de fibres metalliques avec ferraillage transversal reduit

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21

Delfaut, Laurence. "Elaboration et caractérisation d'un matériau composite nouveau à base de tungstène." Grenoble INPG, 1996. http://www.theses.fr/1996INPG4203.

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Pour la realisation de projectiles-fleches, il a ete envisage de remplacer les alliages lourds frittes par un nouveau materiau plus performant. Nous avons donc elabore un materiau composite unidirectionnel constitue d'une forte fraction volumique de fils de tungstene (diametre 1 mm) et d'une matrice en nickel. Ce materiau vise a exploiter au maximum les proprietes des fils de tungstene telles qu'une densite et une resistance tres elevees, une microstructure fibreuse conferant une certaine ductilite. Pour la mise en forme du materiau, nous avons choisi d'utiliser une technique peu exploitee mai

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22

Winfield, P. H. "Toughness development in fibre reinforced metals." Thesis, Cranfield University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259794.

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23

Papworth, Adam John. "Squeeze-casting of fibre reinforced metal matrix composites." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364201.

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24

Filho, Antonio de Padua Lima. "Production and properties of continuous fibre metal-reinforced metal matrix composites." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284793.

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25

Dear, Matthew Nicholas. "Fatigue in SiC fibre reinforced titanium metal matrix composites." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6603/.

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The fatigue and interfacial characteristics of a unidirectional, SiC (SCS 6), fibre reinforced Ti 6Al 4V metal matrix composite have been investigated using a series of fatigue crack propagation, total life, and interfacial characterisation techniques. A room temperature crack arrest to catastrophic failure (CA/CF) transition was quantified using the initial stress intensity factor range ΔKapp. This transition occurred between 21 and 18 MPa√m in the three point bend geometry, and was found to be dependent on volume fraction of intact fibres bridging the crack. Increasing the test temperature t

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26

Demir, Adem. "Silicon carbide fibre reinforced #beta#-sialon ceramics." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391291.

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27

Zamperini, Silvia. "Effects of cyclic loading on fibre reinforced titanium metal matrix composites." Thesis, University of Birmingham, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289709.

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28

Bystrický, Pavel. "Plasticity of metal matrix composites reinforced with continuous alumina fibers." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/44488.

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Arola, Dwayne Dale. "The influence of net shape machining on the surface integrity of metals and fiber reinforced plastics /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/7138.

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O'Rourke, Jane. "Microstructure and mechanical properties of fibre-reinforced heat-treatable aluminium alloys." Thesis, University of Bath, 1995. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261348.

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31

GuzmaÌn, J. Fernando GuilleÌn. "Cooling rate effects in glass reinforced thermoplastic-based fibre metal laminates." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399210.

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Smith, Joel Edmund. "Development of improved metal matrix composite via the control of interface and matrix microstructure." Thesis, University of Bath, 1995. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296330.

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33

Behloul, Mouloud. "Analyse et modélisation du comportement d'un matériau à matrice cimentaire fibrée à ultra hautes performances : bétons de poudres réactives, du matériau à la structure." Cachan, Ecole normale supérieure, 1996. http://www.theses.fr/1996DENS0026.

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L'objectif de ce travail est d'étudier le comportement mécanique des bétons de poudres réactives renforces de fibres métalliques (bpr) et de définir des modèles de calcul permettant la prédiction du comportement des structures en bpr. Le comportement du bpr sous différentes sollicitations: compression, traction et flexion est présenté dans un premier temps. Ensuite, la distribution des fibres dans les structures est étudiée et son aspect aléatoire quantifié ; une formulation empirique de sa dispersion est proposée. Cet aspect aléatoire de la distribution des fibres est intégré dans un modèle p

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34

Li, Maojun. "Drilling of carbon fibre reinforced plastic (CFRP) and metal matrix composites (MMC)." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5953/.

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The use of carbon fibre reinforced plastic (CFRP) and metal matrix composites (MMC) is steadily increasing as an alternative to traditional metallic materials in various industrial sectors. The overall aim of the project is to assess the machinability when drilling epoxy based CFRP and Al/SiCp MMC composites and understand its effects on feature quality and workpiece integrity. Specific objectives of the project relate to establishing preferred/optimum operating parameters (cutting speed, feed rate and drill strategies) and investigating the influence of cutting environment (dry, chilled air,

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35

Batikha, Mustafa. "Strengthening of thin metallic cylindrical shells using fibre reinforced polymers." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/3994.

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Steel silos are widely used as long-term or short-term containers for the storage of granular solids, of which a huge range are stored, from flour to iron ore pellets, coals, cement, crushed rocks, plastic pellets, chemical materials, sand, and concrete aggregates. The radius to thickness ratio for silos is in the range of 200 to 3000, so they fall into the category of thin shells, for which failure by buckling is the main concern and requires special attention in design. The primary aim of this thesis is to investigate the possible application of Fibre Reinforced Polymer (FRP) as a new repair

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ABDUL, KARIM MUHAMMAD RAMZAN. "Metal matrix composites reinforced with SiC long fibers and carbon nanomaterials produced by electrodeposition." Doctoral thesis, Politecnico di Torino, 2015. http://hdl.handle.net/11583/2591591.

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The research work of this PhD thesis was done on the study, production and characterization of two types of metal matrix composites: 1) fiber reinforced metal matrix composites and, 2) carbon nanomaterials reinforced metal matrix composites. In fiber reinforced metal matrix composites, a metal or an alloy is reinforced with continuous or discontinuous fibers in order to improve the specific strength and stiffness at high temperatures. For example superalloys are the typical materials for the hot parts of aeronautic engines. They are very important in the aerospace field as they offer high temp

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Attar, Ahmed. "Le béton renforcé de fibres metalliques, matériau anisotrope et hétérogène : caractérisation et modélisation du comportement en traction uniaxiale." Cachan, Ecole normale supérieure, 1996. http://www.theses.fr/1996DENS0011.

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Les résultats des essais d'identification des paramètres de la loi de comportement en traction disponibles pour les bétons renforcés de fibres métalliques, ne peuvent généralement rendre compte de manière satisfaisante des capacités réelles du matériau. On cherche à apprécier la sensibilité des grandeurs caractéristiques de la loi de comportement (la résistance en traction f#t et l'énergie de post-fissuration g#f) aux facteurs relatifs a la constitution du corps d'épreuve et aux conditions expérimentales. En suivant la méthodologie des plans d'expériences qui permet d'adopter une démarche form

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Vogel, Veronika. "Endlosfaserverstärkte Thermoplaste zur Abschirmung elektromagnetischer Strahlung." Universitätsverlag Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A36413.

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Durch die Ergänzung von Organoblechen mit gewebten Strukturen aus Metalldrähten können hochbelastbare Bauteile gleichzeitig mit einer abschirmenden Wirkung versehen werden und ermöglichen so Anwendungen wie beispielsweise im Umfeld der Elektromobilität. Im Rahmen der vorliegenden Arbeit wird ein polypropylen-basierter Schichtverbund aus thermoplastischen Hochleistungsfaserverbunden und Metalldrahtgewebe hinsichtlich seiner Eignung zur Abschirmung elektromagnetischer Wellen für Gehäusestrukturen und seiner Verarbeitbarkeit im Spritzgießen näher analysiert. Die Untersuchungen zeigen den Einflus

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Velthuis, Rudi [Verfasser], and Peter [Akademischer Betreuer] Mitschang. "Induction Welding of Fiber Reinforced Thermoplastic Polymer Composites to Metals / Rudi Velthuis ; Betreuer: Peter Mitschang." Kaiserslautern : Technische Universität Kaiserslautern, 2017. http://d-nb.info/1138630500/34.

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40

Kryze, Jana. "Méthode d'élaboration et propriétés mécaniques de composites duralumin / fibres ou particules céramiques, obtenus par métallurgie des poudres et filage." Châtenay-Malabry, Ecole centrale de Paris, 1995. http://www.theses.fr/1995ECAP0444.

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Nous avons mis au point un procédé de fabrication de composites à matrice métallique, dont nous avons montre l'efficacité pour divers renforts céramiques, fibres de carbone, fibres d'alumine saffil, ou particules de carbure de silicium. Nous avons comparé les comportements en traction monotone de ces composites en fonction du type de renfort. L'utilisation de modèles de calcul du type Mori-Tanaka nous a permis de mieux comprendre l'influence des divers paramètres microstructuraux tels que la fraction volumique ou l'orientation des renforts. Nous avons mis en parallèle les résultats d'essais en

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41

Gagnon, Geneviève. "Cast Al-based metal matrix composites reinforced by alumina short fibers : micromechanical behavior under thermal cycling /." [S.l.] : [s.n.], 1995. http://library.epfl.ch/theses/?nr=1366.

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42

Lobley, Christopher Marcus. "Tape casting as a novel processing route for silicon carbide fibre-reinforced titanium metal matrix composites." Thesis, Queen Mary, University of London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298249.

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43

Kadam, Ruthvik Dinesh. "Design and Additive Manufacturing of Carbon-Fiber Reinforced Polymer Microlattice with High Stiffness and High Damping." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/103009.

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Carbon fiber reinforced polymer (CFRP) composites are known for their high stiffness-to-weight and high strength-to-weight ratios and hence are of great interest in several engineering fields such as aerospace, automotive and defense. However, despite their light weight, high stiffness and high strength, their application in these fields is limited due to their poor energy dissipation and vibration damping capabilities. This thesis presents a two-phase microlattice design to overcome this problem. To realize this design, a novel tape casting integrated multi-material stereolithography system i

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Almonte, Thania Grisel Rodriguez. "Avaliação da resistência à fratura de prótese parcial fixa provisória confeccionada sobre componentes do tipo UCLA em titânio - efeito de diversos reforços." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/25/25135/tde-11042015-110150/.

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As restaurações provisórias no tratamento reabilitador oral são de suma importância. Por isso é preocupante que os materiais utilizados para a execução das mesmas sejam críticos com relação à sua resistência e longevidade, principalmente, quando estas são executadas em tratamentos prolongados e/ou em espaços desdentados extensos. O objetivo deste trabalho foi avaliar em 4 grupos reforçados, compostos por 9 espécimes cada um, a resistência e o modo de fratura, de uma resina acrílica poli(metilmetacrilato) auto-polimerizável (Dencor® - Clássico®, São Paulo, SP, Brasil) utilizada para restauraç

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Molliex, Ludovic. "Approche micromécanique de la résistance en traction de composites à matrice métallique : carbure de silicium/titane et carbure de silicium/aluminium." Châtenay-Malabry, Ecole centrale de Paris, 1995. http://www.theses.fr/1995ECAP0400.

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L’interface fibre-matrice dans les composites à matrice métallique est le siège de réactions chimiques complexes et d'un état de contraintes résiduelles particulier. On se propose de caractériser l'interface fibre-matrice à l'aide de l'essai de fragmentation sur composite monofilamentaire. Cet essai impose de quantifier l'endommagement de la fibre au sein du composite et de calculer les contraintes résiduelles à l'interface. Puis moyennant quelques simplifications, une simulation est développée afin de prévoir la résistance en traction d'un composite multifilamentaire sollicité dans le sens de

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Friend, Gareth William. "The effect of defects on the mechanical properties of fibre reinforced titanium metal matrix composites under fatigue loading." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5438/.

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Applications for titanium metal matrix composites (TiMMCs) are currently being developed by Rolls-Royce plc in gas turbine engine components. With any component manufacturing process there is a probability of defects, as much of the work on TiMMCs to date has been laboratory scale there is as yet no study that looks specifically at the defects that can arise in full scale components. This work set out to investigate the influence of a selection of defects on the fatigue properties of titanium diffusion bonds – an integral joint type in TiMMC components – using conditions derived from TiMMC com

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Klein, Mario, Frank Podlesak, Kevin Höfer, et al. "Advanced Joining Technologies for Load and Fibre Adjusted FRP-Metal Hybrid Structures." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-177669.

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Multi-material-design (MMD) is commonly realized through the combination of thin sheet metal and fibre reinforced plastics (FRP). To maximize the high lightweight potential of the material groups within a multi-material system as good as possible, a material-adapted and particularly fibre adjusted joining technology must be applied. The present paper focuses on two novel joining technologies, the Flow Drill Joining (FDJ) method and Spin-Blind-Riveting (SBR), which were developed for joining heavy-duty metal/composite hybrids. Tests were carried out with material combinations which are signific

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Cheng, Ming-Yi. "An experimental investigation into tool wear in micro-drilling of aluminium, aluminium/copper metal alloys and carbon fibre reinforced composites." Thesis, Brunel University, 2017. http://bura.brunel.ac.uk/handle/2438/14613.

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Limitation of conventional machining equipment has become a growing concern over the past two decades due to the demands for greater machining accuracy in today’s manufacturing. The development of micro-machining has therefore attracted significant attention; it signifies the advancement of national economy as well as the level of accuracy manufacturing industry could achieve. While the connection between tool lifespan, cost of machining and throughput is well established, the factor of tool lifespan appears to have more significance since the miniaturization of tool could lead to further perf

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Said, Assma Musbah. "Friction and lubrication behaviour of metal-on-metal and ZTA ceramic-on-CFR PEEK hip prostheses : friction and lubrication behaviour of metal-on-metal hip resurfacing and ZTA ceramic heads versus CFR PEEK cups with various diameters and clearances using serum-based lubricants with various viscosities." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/6339.

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The natural hip joint in healthy people has a very low friction with very little (or no) wear. It works as a dynamically loaded bearing and is subjected to about 1-2 million cycles of loading per year. The applied load is the body weight which is tripled when walking and even higher during other activities such as running and jumping. Unfortunately these joints are not always healthy due to various causes such as fractures or disease leading to severe pain which necessitates joint replacement. Currently, the orthopaedic industries are working towards developing an ideal artificial hip joint wi

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Kenningley, Scott David Peter. "High temperature thermal and mechanical load characterisation of a steel fibre reinforced aluminium metal matrix composite (AlMMC) for automotive diesel pistons." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/high-temperature-thermal-and-mechanical-load-characterisation-of-a-steel-fibre-reinforced-aluminium-metal-matrix-composite-almmc-for-automotive-diesel-pistons(5cc789fc-d64e-4905-bc1c-beb0e3b9c0df).html.

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In modern automotive engines, the vast majority of light vehicle diesel (LVD) pistons are made from gravity die cast monolithic AlSi based alloy systems. Presently, the market drivers for reduced emissions, more efficient fuel consumption and increased specific power output are providing cyclic thermal and mechanical fatigue loading above the safe life durability threshold for the current AlSi based alloy systems. Peak temperatures in the diesel piston’s fatigue critical combustion bowl region are presently 420 °C for the AlSi based alloys, which represents a homologous TH value in excess of

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