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Dissertations / Theses on the topic 'Cladding'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Srivastava, Raghvendra Mohan. "Electroslag cladding." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611300.

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2

Lin, Jehnming. "Characterisation of coaxial laser cladding." Thesis, University of Liverpool, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367284.

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3

Paramonova, Ekaterina (Ekaterina D. ). "CRUD resistant fuel cladding materials." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82447.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2013.<br>"June 2013." Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 27-29).<br>CRUD is a term commonly used to describe deposited corrosion products that form on the surface of fuel cladding rods during the operation of Pressurized Water Reactors (PWR). CRUD has deleterious effects on reactor operation and currently, there is no effective way to mitigate its formation. The Electric Power Research Institute (EPRI) CRUD Resistant Fuel Cladding project has the obje

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4

Zanzarin, Simone. "Laser cladding with metallic powders." Doctoral thesis, Università degli studi di Trento, 2015. https://hdl.handle.net/11572/368798.

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the influence of the powder material and the main processing parameters on geometrical features and dilution of the clads is investigated and discussed. Physical and analytical model that allow the explanation of the process and the prediction of the clad geometry and dilution is discussed. Using these models, useful tools for cladding operators and engineers are proposed. The energetic balance of the process is presented. Energetic redistribution in laser cladding process is analysed in detail, and quantification of process efficiency and energy losses is given. The influence of the processin

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5

Zanzarin, Simone. "Laser cladding with metallic powders." Doctoral thesis, University of Trento, 2015. http://eprints-phd.biblio.unitn.it/1590/1/Simone_Zanzarin_PhD_Thesis.pdf.

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the influence of the powder material and the main processing parameters on geometrical features and dilution of the clads is investigated and discussed. Physical and analytical model that allow the explanation of the process and the prediction of the clad geometry and dilution is discussed. Using these models, useful tools for cladding operators and engineers are proposed. The energetic balance of the process is presented. Energetic redistribution in laser cladding process is analysed in detail, and quantification of process efficiency and energy losses is given. The influence of the processin

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6

Murphy, M. L. "Rapid prototyping by laser surface cladding." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284268.

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In recent years rapid prototyping technology has been implemented in many spheres of industry, particularly the field of product development. Existing process provide the capability to rapidly produce a tangible solid part, directly from three dimensional CAD data, from a range of nonmetallic materials. In many situations the desired end product of a development cycle is a metallic object, whether a component or a tool. The development of a system capable of the direct manufacture of fully dense, metal parts is therefore seen as an important landmark in the evolution of rapid prototyping techn

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7

Sexton, Cornelius Leo. "Rapid Alloy Scanning by laser cladding." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320605.

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8

Gojan, Agnieszka. "Advanced Modeling of Pellet-Cladding Interaction." Thesis, KTH, Fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192843.

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9

Ji, Junhua. "Cladding-pumped Raman fibre laser sources." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/186035/.

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In this thesis, I investigate cladding-pumped Raman fibre lasers and amplifiers. Such devices, offering a novel way to generate Raman gain, combine the advantages of the hugely successful cladding-pumped rare-earth doped fibre lasers with those of stimulated Raman scattering. They not only inherit most advantages of conventional fibre devices, such as flexibility, high efficiency, compactness, and robustness, but also provide their own advantages and distinct properties relative to conventional fibre sources, i.e., wavelength flexibility and nearly instantaneous gain without energy storage. Cl

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10

Gedda, Hans. "Laser cladding : an experimental and theoretical investigation /." Luleå, 2004. http://epubl.luth.se/1402-1544/2004/41/LTU-DT-0441-SE.pdf.

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11

Baird, Andrew. "Seismic performance of precast concrete cladding systems." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2014. http://hdl.handle.net/10092/9997.

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Structural engineering is facing an extraordinarily challenging era. These challenges are driven by the increasing expectations of modern society to provide low-cost, architecturally appealing structures which can withstand large earthquakes. However, being able to avoid collapse in a large earthquake is no longer enough. A building must now be able to withstand a major seismic event with negligible damage so that it is immediately occupiable following such an event. As recent earthquakes have shown, the economic consequences of not achieving this level of performance are not acceptable. Tech

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12

Engström, Hans. "Theoretical and practical aspects of laser cladding." Licentiate thesis, Luleå tekniska universitet, Produkt- och produktionsutveckling, 1996. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17807.

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13

Li, Lin. "Intelligent laser cladding control system design and construction." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/7683.

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14

Salehi, Dariush, and ds_salehi@yahoo com. "Sensing and control of Nd:YAG laser cladding process." Swinburne University of Technology, 2005. http://adt.lib.swin.edu.au./public/adt-VSWT20050915.142812.

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Surface engineering provides solutions to wear and corrosion degradation of engineering components. Laser cladding is a surfacing process used to produce wear and corrosion resistant surfaces by covering a particular part of the substrate with another material that has superior properties, producing a fusion bond between the two materials with minimal dilution of the clad layer by the substrate. The advantages of laser cladding compared to conventional techniques include low and controllable heat input into the workpiece, a high cooling rate, great processing flexibility, low distortion due to

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15

Inculet, D. "The design of cladding against wind-driven rain." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ58218.pdf.

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16

Gedda, Hans. "Analysis and development of the laser cladding process." Licentiate thesis, Luleå, 2002. http://epubl.luth.se/1402-1757/2002/13.

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17

Moor, Christian. "Analytical and experimental evaluation of advanced cladding connections." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/21441.

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18

Uniacke, Henry. "Design of a low cost ventilated photovoltaic cladding." Thesis, Cardiff University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496972.

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19

Du, Qiang. "Integrated decision-making in the cladding supply chain." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507764.

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The cladding industry is relatively independent and complex, having contemporary features in a rapidly changing sector of the construction industry. The increasing complexity of the cladding procurement and fragmentation of the supply chain bring challenges for making informed decisions. The purpose of this research was to study the cladding design and procurement process, in particular the decision making process. It was hoped to develop an integrated decision making mechanism within the context of the cladding supply chain. Based on preliminary exploration, a conceptual model of integrated c

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20

Selvas-Aguilar, Romeo de Jesus. "Cladding-pumped neodymium and ytterbium doped fibre lasers." Thesis, University of Southampton, 2004. https://eprints.soton.ac.uk/41526/.

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This thesis details my work on both high-power neodymium-doped fibre lasers (at around 1.1 μm and around 0.9 μm) and ytterbium-doped fibre lasers (at 980 nm). The main subjects were the study of efficient three-level compact continuous-wave fibre lasers and their power scaling.Ytterbium-doped fibre lasers (YDFLs) with emission at 980 nm were also investigated. I, in collaboration, obtained the highest reported output power from any compact single-mode 980 nm laser to this point. For this, speciality fibres, with special core and inner-cladding designs, were developed, notably the jacketed-air-

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21

Tibblin, Fritjof. "Characterization of a newly developed martensitic stainless steel powder for Laser and PTA cladding." Thesis, KTH, Materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-163788.

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A newly developed martensitic stainless steel powder, called “powder A”, designed for surface coating with laser cladding and PTA cladding was characterized. The purpose with powder A is to achieve both good corrosion resistance and wear resistance in a stainless steel grade. The investigation of powder A was divided into cladding characterization, microstructural investigation and a property comparison to existing grades 316 HSi and 431 L. Powder A was successfully deposited with laser cladding, exhibiting a wide process window, and PTA cladding. In both cases no preheating was required and n

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22

Yevko, Vladimir. "Cladding formation in laser-beam fusion of metal powder." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/MQ33971.pdf.

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23

Wolz, Michael W. "Nonlinear interaction between building structural systems and nonstructural cladding." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/20129.

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24

Schnier, Gladys. "Development and validation of a fatigue-resistant cladding technology." Thesis, University of Strathclyde, 2015. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=26011.

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Knowledge and understanding of residual stresses has been and remains a complex area of study, the determination of these stresses crucial in appreciating the state of the component both prior to and during operation. In the case of dissimilar joints, the interaction of materials increases the complexity of the residual stress state resulting due to the applied joining process. A fatigue-resistant cladding technology is presented in this thesis, with the aim of inducing compressive residual stresses in the clad layer. Through the generation of these beneficial compressive residual stresses an

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25

Yang, Wen Fu. "Laser cladding surface treatment for enhancement of mechanical properties." Thesis, Peninsula Technikon, 2003. http://hdl.handle.net/20.500.11838/1267.

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Thesis (MTech (Mechanical Engineering))--Peninsula Technikon, 2003<br>Systematic laser cladding experiments were performed using a mixture of a Nickel base alloy powder mixed with tungsten carbide powder (percentage contents of tungsten carbide from 10% to 40%) on EN8 steel substrate with pre-placed powder method. Laser cladding of the Nickel base alloy powder + 50% tungsten carbide powder on EN9 steel substrate was performed with powder injection method as well. A Finite Element Method for calculating the surface temperature distribution was used to help prediction of temperature

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26

Stevenson, Elizabeth Victoria. "The design and evaluation of building integrated thermal cladding." Thesis, Cardiff University, 2007. http://orca.cf.ac.uk/27935/.

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The project aim was to investigate the potential of a large scale, inexpensive, solar thermal façade in the UK climate. Profiled steel cladding was utilised as a solar absorber, with the channels used to form a series of parallel ducts when covered by a glass surface. Air was considered to flow through the ducts in two modes; forced or buoyant convection. The factors affecting air flow were investigated in a laboratory experiment. The factors affecting solar heat transfer to the air were investigated using prototypes in field conditions. Three models for forced convection and two for buoyant w

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27

Palermo, Antonio. "Influence of cladding on robustness of multi-storey buildings." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6003/.

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In this dissertation the influence of a precast concrete cladding system on structural robustness of a multi-storey steel-composite building is studied. The analysis follows the well-established framework developed at Imperial College London for the appraisal of robustness of multi-storey buildings. For this scope a simplified nonlinear model of a typical precast concrete façade-system is developed. Particular attention is given to the connection system between structural frame and panel, recognised as the driving component of the nonlinear behaviour of the façade-system. Only connections invo

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28

Schweitzer, Luiz Guilherme de Souza. "Laser cladding for epitaxial nickel base superalloys turbine blades." reponame:Repositório Institucional da UFSC, 2014. https://repositorio.ufsc.br/xmlui/handle/123456789/129625.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2014.<br>Made available in DSpace on 2015-02-05T21:18:49Z (GMT). No. of bitstreams: 1 328410.pdf: 5168954 bytes, checksum: a55c798d806d29cc35e63be5e11587fe (MD5) Previous issue date: 2014<br>A prosperidade e larga utilização da aviação como meio de transporte civil, nacional e internacional, exige seriedade no condicionamento das aeronaves. A manutenção preventiva é um ponto fundamental para que sejam evitados desastres aéreos. A verificação do

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29

Lundgren, Emil. "A new model for Pellet Cladding Interaction risk assessment." Thesis, KTH, Fysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263048.

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30

Tang, Louis. "Local failures of steel cladding systems under wind uplift." Thesis, Queensland University of Technology, 1997. https://eprints.qut.edu.au/36042/1/36042_Tang_1997.pdf.

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The profiled steel roof and wall cladding systems in Australia are commonly made of very thin high tensile steels, and are fastened with screw fasteners at their crests. In contrast, the steel cladding systems in the USA and Europe are made of thicker mild steels, and are valley-fixed. Furthermore, the design of cladding systems in Australia is governed by wind uplift/suction loading whereas gravity load governs the USA/Europe cladding systems. Since Australian Standards such as AS 1562-1990 (Design and Installation of Roof and Wall Claddings) do not provide suitable design formulae for

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31

ROSSI, JESUALDO L. "Efeito de tratamentos mecanotermicos na fluencia de aco inoxidavel austenitico estabilizado com niobio." reponame:Repositório Institucional do IPEN, 1987. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9872.

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Made available in DSpace on 2014-10-09T12:32:19Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:10:29Z (GMT). No. of bitstreams: 1 01540.pdf: 2534668 bytes, checksum: a9e18afc1ec717924aa15bdb9fad2b16 (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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32

Xiao, Di-Chen. "Manufacture of novel bearings by laser." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321252.

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33

Andrews, Michael Robert. "The interaction of deposition promoters with AGR fuel cladding surfaces." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244466.

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34

Ranalli, Juan Manuel. "Relationship between microstructure and corrosion of pressure vessel cladding materials." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8333/.

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Type 347L and Type 309L stainless steels used as weld cladding materials of nuclear reactor pressure vessels were investigated under realistic conditions of fabrication and service. Electron backscatter diffraction and metallographic observations were used in combination with double loop electrochemical potentiokinetic reactivation (DLEPR) test and ASTM-262-A test to determine the precipitation behaviour and its influence on intergranular corrosion (IGC) resistance as a function of post welding heat treatment (PWHT) time at 600 oC and after simulated service ageing at 425 °C. It was shown that

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35

Jarvis, Jennifer Anne. "Hydrogen entry in Zircaloy-4 fuel cladding : an electrochemical study." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/103730.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 291-297).<br>Corrosion and hydrogen pickup of zirconium alloy fuel cladding in water cooled nuclear reactors are life-limiting phenomena for fuel. This thesis studies the fate of hydrogen liberated by waterside corrosion of Zircaloy-4 fuel cladding in Pressurized Water Reactors (PWRs): are the adsorbed protons incorporated into the oxide and eventually the metal, or are they evolved into molecular hydr

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36

Lee, Youho. "Safety of light water reactor fuel with silicon carbide cladding." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/86866.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2013.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 303-314).<br>Structural aspects of the performance of light water reactor (LWR) fuel rod with triplex silicon carbide (SiC) cladding - an emerging option to replace the zirconium alloy cladding - are assessed. Its behavior under accident conditions is examined with an integrated approach of experiments, modeling, and simulation. High temperature (1100°C~1500°C) steam oxidation experiments demonstrated

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37

Paul, James. "Joining of silicon carbide for accident tolerant PWR fuel cladding." Thesis, University of Manchester, 2017. https://www.research.manchester.ac.uk/portal/en/theses/joining-of-silicon-carbide-for-accident-tolerant-pwr-fuel-cladding(f9851a0a-ef68-465e-8029-a31ab77fab27).html.

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Following two previous nuclear reactor accidents involving light water reactors, there is a renewed interest in accident tolerant fuels. These accident tolerant fuels should not oxidise in a steam atmosphere during loss of coolant accidents. One such accident tolerant fuel that has been suggested is the use of ceramic composite cladding material as a replacement for the current zircaloy cladding. The high temperature stability of silicon carbide, together with its high resistance to corrosion may make it preferable to zircaloy during accident conditions. Furthermore, if the neutron absorption

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38

Phuah, Chin Heng. "Corrosion of thermally-aged Advanced Gas-Cooled Reactor fuel cladding." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/10550.

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The microstructure of Advanced Gas-Cooled Reactor (AGR) fuel cladding that underpins its corrosion behaviour has been established, contributing to an understanding of long-term control, monitoring practice and storage decisions for this fuel. AGR fuel cladding specimens sourced from Sellafield Ltd, cut and individually heat treated at temperatures from 400 to 800°C for 24 to 192h were attempts to approximate irradiated AGR fuel cladding and characterised both in terms of their corrosion behaviour and of microstructure. Niobium carbide (NbC) second phases are the primary local corrosion sites.

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39

Nguyen, Quan Viet. "Seismic Energy Dissipation of Steel Buildings Using Engineered Cladding Systems." Amherst, Mass. : University of Massachusetts Amherst, 2009. http://scholarworks.umass.edu/theses/373/.

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40

Rudyk, Martin. "Porovnání navařování svazkem elektronů a plazmou." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231419.

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This diploma thesis deals with plasma cladding and electron beam cladding. The theoretical part is divided into several chapters which is focused on description of these methods of cladding process. In the practical part the particular experiment of electron beam cladding (EBC) and plasma cladding (PC) is described. In the conclusion overall results were assessed, both methods were compared each other and possible exploitation in industry was described.

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41

Stephan, Hendrik Christoffel. "Investigation of a testing approach for trapezoidal crest fastened metal cladding." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80018.

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Thesis (MscEng)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Low-rise buildings with crest fastenedmetal cladding are susceptible to failures in the vicinity of the fasteners during strongwind uplift conditions. These localised failures often lead to the progressive removal of cladding, which can cause disastrous building damage. In South Africa, the current metal cladding design approach is inadequate, since it solely relies upon manufacturer design specifications. These specifications are typically designated as broad design guidelines for the maximum allowable cladding support s

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42

Winter, Gerrard Martin. "Determination of the design strength of thin structural veneer cladding panels /." St. Lucia, Qld, 2002. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17531.pdf.

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43

Asselin, Matthew. "Optical Sensor for Measurement of Clad Height during Laser Cladding Process." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/874.

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The process of laser cladding consists of depositing successive layers of molten metallic powder to create a near-net shape. A high-power laser is used to melt incoming metallic powder, which forms a melt pool on the surface. As the latter moves beneath the laser, this newly created melt pool solidifies. By properly controlling the trajectory of deposition tracks, one can create a diverse range of shapes with varying complexities. However, the process is very sensitive to parameters, requiring constant attention from technicians. This lends itself perfectly to the addition of automat

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44

Lester, Samuel John. "Laser cladding to improve the campaign life of continuous caster rolls." Thesis, Swansea University, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.660122.

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45

Yeung, Anson Chi-Ming Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Polymer segmented cladding fibres: cross fibre modelling, design, fabrication and experiment." Publisher:University of New South Wales. Electrical Engineering & Telecommunications, 2009. http://handle.unsw.edu.au/1959.4/43656.

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This thesis presents the first research on polymer-segmented-cladding-fibre (PSCF), an emerging class of microstructured- optical-fibres (MOFs), which allows single-mode operation with ultra-large-core area. This research covers the modelling, design, fabrication and experiment of the polymer optical cross-fibre (4-period-SCF) whose cross-sectional view resembles a cross. A new wedge waveguide model has been formulated and applied to demonstrate that for any given parameters, the cross fibre gives the same performance for single-mode operation as the N-period-SCFs (for N = 2, 6 and 8). These

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46

Marsh, David James. "Controlled release elastomer systems as cladding materials resistant to marine fouling." Thesis, University of Portsmouth, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238152.

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47

Rai, Subash. "Role of sulphur on carbon deposition on AGR fuel cladding steel." Thesis, University of Birmingham, 2019. http://etheses.bham.ac.uk//id/eprint/8882/.

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Filamentary carbon deposition on 20Cr/25Ni/Nb austenitic stainless steel from 1000-5000 ppm C2H4 in 1%CO/ bal. CO2 at 600°C has been investigated. This filamentary carbon deposition is catalysed by metallic nickel-rich particles formed intrinsically from the alloy during the early stages of oxidation. Samples were analysed using electron microscopy techniques. A simple model has been proposed to explain the formation of nickel-rich particles within the subsurface oxide layer. Furthermore, in this project the effect of COS, H2S and CH3SH on carbon deposition were examined. Addition of sulphur s

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48

Kuo, Chuan-Hua. "Impact of cladding on mid-rise buildings in the Northridge Earthquake." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/51570.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2009.<br>Includes bibliographical references (p. 58-59).<br>In this thesis, the importance of cladding panels on mid-rise buildings in an earthquake-prone region is investigated. A cladding panel acts as a protective or an insulating layer to control weather infiltration. The Northridge Earthquake, which took place on January 17, 1994, caused numerous heavy cladding panels to fall off the walls of residential and commercial buildings. The failure of these panels was a result of an insufficien

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49

Yi, Liu Chang, and 劉昶熠. "Temperature Analysis of Laser Cladding." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/56718148437624034199.

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碩士<br>國立成功大學<br>機械工程學系<br>89<br>Abstract Laser cladding is one of the laser material processes. The laser is used as a heat source to heat the powder or wire on the substrate in the laser cladding. The materials are formed with a fusing bonding and achieve the functions of source coating and rapid prototyping in the industrial applications. The object of this thesis is to analyze the temperature of the powder streams from a coaxial nozzle to the substrate and that of the clad-substrate. A simplified model of the powder-laser heating problem was proposed and solved by a nu

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50

Su, Wen-Yueh, and 蘇文岳. "Analysis of cladding-mode coupling schemes." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/98230654535156348225.

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碩士<br>國立臺灣大學<br>光電工程學研究所<br>90<br>In the thesis, a beam-propagation method (BPM) is employed to analyze the coupling scheme as proposed previously which combines a lensed fiber and a long-period fiber grating (LPFG). The influences of a core within the fiber lens are investigated. As for the fiber dependence of our coupling scheme, two typical fibers are studied: dispersion-shifted and single-mode step-index fibers. By using BPM, the optimal coupling efficiencies for various source waists with corresponding lens radii and working distances are determined. The coupling efficiency of the previou

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