Dissertations / Theses on the topic 'Armour Ceramics'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 24 dissertations / theses for your research on the topic 'Armour Ceramics.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
Huang, Shuo. "Nanostructured advanced ceramics for armour applications." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12513.
Fakolujo, Olaniyi Samuel. "Characterisation and Properties Improvement of Armour Ceramics." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34861.
Johnstone, Charles Douglas. "Fundamental study of glassy ceramics for armour plating." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335896.
Westerling, Lars. "Interaction of Cylindrical Penetrators with Ceramic and Electromagnetic Armour." Doctoral thesis, Uppsala universitet, Tillämpad mekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-197563.
Hazell, Paul J. "The failure of ceramic armour subjected to high velocity impact." Thesis, Cranfield University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263485.
Genevois, Julia. "Etude du comportement de céramiques à blindage sous chargement de compression haute-vitesse par essais d’impact de plaque plan ou sans choc." Electronic Thesis or Diss., Université Grenoble Alpes, 2023. http://www.theses.fr/2023GRALI106.
Ceramic materials are widely used in armour or protective structures providing weight savings for equivalent performance compared to their steel counterparts. In these conditions, they experience extreme damage, micro-plasticity and fragmentation mechanisms. To fully understand these behaviours, characterization under high-strain-rate compression needs to be conducted. Several experimental techniques, such as the plate-impact test, are used to investigate the dynamic behaviour of ceramic under high compressive loading. During this experiment, a flyer plate (often made of a metallic material) strikes the target, and some mechanical properties such as the HEL (Hugoniot Elastic Limit) as well as the Hugoniot curve of the material can be deduced from the rear side velocity measured at the back of the target. Nevertheless, this test do not provide a controllable loading-rate in the target and the hardening behaviour cannot be directly deduced.One of the aims of this thesis was to develop and implement an experimental shockless plate-impact configuration enabling Lagrangian Analysis. The various experimental campaigns were carried out using the 3SR laboratory launcher. The use of wavy flyer plates to generate a loading ramp was validated using tests on 316L steel, which has the asset of not changing phase in the range of studied stresses. Two ceramics, F99.7 alumina and Forceram SiC, were then studied in this configuration. These tests coupled with Lagrangian analysis enable to obtain the curve of axial stress as a function of axial strain beyond the HEL.At the same time, some other plate impact configurations were developed to characterise the temporal profiles of axial and radial stresses in the ceramic. This configuration is based on the use of Manganin piezoresistive gauges. These tests were carried out on steel and alumina targets. The results were compared with the ones obtained by rear side velocity measurements during the same tests.The experimental results from the thesis were compared with numerical finite element simulations based on a JH2-type (Johnson–Holmquist) plasticity model. These calculations were used to identify the parameters of the ceramic behaviour model thanks to an inverse approach. It helps providing a better understanding of the mechanical behaviour of these materials under such loading conditions. Nevertheless, other tests, in particular triaxial tests, could be further considered in order to complete the identification of a constitutive model for these microstructures under intermediate confinement pressures
Wiley, Charles Schenck. "Synergistic methods for the production of high-strength and low-cost boron carbide." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39479.
Healey, Adam. "Understanding the ballistic event : methodology and observations relevant to ceramic armour." Thesis, University of Surrey, 2017. http://epubs.surrey.ac.uk/841056/.
Fellows, N. A. "Behaviour of ceramic armours subjected to high velocity impact." Thesis, Cranfield University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339810.
Harris, Andrew J. "The surface treatment of advanced ceramic materials for improved adhesive bond strength in armour applications." Thesis, University of Surrey, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.606820.
Aharonian, Charles. "Elaboration de matériaux céramiques composites et/ou d'architectures lamellaires pour la protection balistique des personnes et des matériels." Thesis, Limoges, 2014. http://www.theses.fr/2014LIMO0059/document.
The development of lightweight alumino-silicate based ceramics exhibiting high mechanical performances and low cost, shows a growing interest in various application areas such as ballistic protection. In this context, the aims of this study is the development of innovative materials corresponding to competitive ballistic protection comparing to carbide or alumina materials. Several ways were explored. A thorough study of alumino-silicate compositions has allowed to obtain materials with a best compromise density / Young's modulus, the main advantage is the ability to use conventional methods of preparation (pressing, die-casting) and conventional kilns used for the firing of porcelain. To improve the surface hardness, carbide coatings were performed. The original protocol developed leads to carbide coating with good adhesion on the substrate using a traditional thermal treatment method. Finally, lamellar architectures of materials were developed to increase the energy dissipation of failure. Thanks to a differential thermal expansion between the two compositions of alumino-silicates, the occurrence of residual thermal stresses in lamellar materials has increased the average stress of failure values of more than 60%
Mansur, Ali. "Modeling Of Mechanical Properties of Ceramic-Metal Composites for Armor Applications." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20124.
Sarva, Sai Sushilkumar. "Dynamic failure mechanisms in armor grade ceramics : the effect of lateral confinement and membrane restraint /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3104047.
Basaran, Mustafa Bulent. "Computational Analysis Of Advanced Composite Armor Systems." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608858/index.pdf.
Vargas-Gonzalez, Lionel Ruben. "Microstructural optimization of solid-state sintered silicon carbide." Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/34691.
Coelho, Marcelo Luis Ramos. "Estudo da influência do teor de TiB2, obtido pela reação in situ de B4C e TIC, nas propriedades mecânicas de carâmicas a base de B4C." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-24082012-140442/.
Boron Carbide is a synthetic material with essentially covalent chemical bonds with high fusion point. The main characteristics are: it is sintered at high temperature, high hardness, low density, abrasion resistant, high sonic velocity, good mechanical properties and high neutron absorption cross section (10BxC, x>4). Those features are ideal for ballistics applications. The aim of this study was to evaluate the changes in mechanical properties of Boron Carbide with different concentration of Titanium Diboride by reaction in situ with TiC powders. The addition of carbon during sintering without pressure and hot isostatic pressing of ceramic components was studied. At low temperatures, the nearly values for the theoretical density for pure Boron Carbide were obtained only with the use of additives. In sintering, the use of TiC increased Boron Carbide density. At concentrations up to 20% of TiC, the maximum values for hardness (HV) and fracture toughness (KlC) were obtained. With the introduction of different levels of additive, the difficulty of sintering at high temperatures was minimized and the density of ceramic components was maximized.
Keller, 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.
Rossiquet, Gilles. "Carbure de silicium pour application blindage : élaboration et étude du comportement à l'impact." Thesis, Dijon, 2012. http://www.theses.fr/2012DIJOS103.
Ceramics are a key component in multilayer armor structures. Their low density, typically two to three times lower than steel, combined with a high compressive strength make them essential materials for lightweight armor solutions. Silicon carbide is a promising material for this application due to its particularly low density and high hardness, even among other ceramics. However, armor performance is controlled by more than just the composition and understanding the link between the ceramic microstructure and the fragmentation process during the impact is essential to produce optimized and high performance materials for armor applications.Four dense silicon carbide grades with various microstructures have been used, including three produced during this work. For that, two sintering modes (solid state sintering and liquid phase sintering) and two sintering processes (pressureless sintering and spark plasma sintering) have been used. Particular care has been taken with ceramic processing in order to produce different homogenous and dense microstructures. Silicon carbide parts have been produced at a sufficient size for the application. They were submitted to microstructural characterization (scanning and transmission electronic microscopy, X-ray diffraction, elemental cartography, chemical analysis) and mechanical characterization in quasi-static mode (hardness, toughness, module of rupture, Weibull modulus) and dynamic mode. Dynamic fragmentation of silicon carbide grades has been studied by means of Edge-On Impact (EOI) experiments. A first configuration enabled the study of the damage process that spreads out within the tile thanks to an ultra-high speed camera. A second ‘sarcophagus’ configuration was used to enable observation of the target fragmentation, i.e., crack patterns and crack densities. It has been observed that the microstructure of ceramics plays a key role in the damage intensity generated during impact. A good match with a simulation using the Denoual-Forquin-Hild (DFH) anisotropic damage model has been highlighted. Another experimental configuration implying a double impact on ceramics has been used to characterize the resistance of the damaged target. In parallel, ballistic experiments with 7.62 x54mmR API B32 and 7.62x51mm AP8 threats have been performed. Microstructure of ceramics has been shown to play an important role on ballistic performance
Akella, Kiran. "Studies for Design of Layered Ceramic Armour Inspired by Seashells." Thesis, 2015. http://etd.iisc.ac.in/handle/2005/3768.
Akella, Kiran. "Studies for Design of Layered Ceramic Armour Inspired by Seashells." Thesis, 2015. http://etd.iisc.ernet.in/2005/3768.
Demirbas, Memduh Volkan. "Microstructure-property relaltionship in silicon carbide armor ceramics." 2008. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17300.
Brennan, Raymond. "Ultrasonic nondestructive evaluation of armor ceramics." 2007. http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.17051.
Chang, Min-Sen, and 張閔森. "Simulation of Ceramic Composite Armor Experiencing Armor-piercing Fin-stabilized Discarding Sabot Projectile Impact." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/j536ap.
Xu, Tai-Sheng, and 徐台生. "Ultrasonic Machining of Armor Ceramic Tiles Materials Inspection Technological." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/98785988044712372705.
元智大學
機械工程學系
99
The Marine Corps LAV is being covered with ceramic tiles to protect it against heavy artillery. Ultrasonic machining(USM) is one of the machining processes for armor ceramic tiles materials. Edge chipping, commonly observed in USM of ceramic materials, not only compromises geometric accuracy but also possibly causes an increase in machining cost. Reliable and cost-effective machining of ceramic tiles is crucially important for them to be widely used in a number of critical engineering applications. The potential of Ultrasonic Machining (USM) process has been recognized as one of the reliable and cost-effective machining methods for advanced ceramics and commercial machinery is available for the process. One limitation of the commercial USM machines is that only circular holes can be efficiently machined. In this investigation, a five-variable two-level fractional factorial design is used to conduct the experiments. The purpose of these experiments is to reveal the main effects as well as the interaction effects of the process parameters on the process outputs such as Material Removal Rate (MRR), circularity, cylindricity and surface roughness, which was drawn by comparing ultrasonic machining with rotary ultrasonic machining by polycrystalline diamond(PCD)tool.