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Teses / dissertações sobre o tema "Heat resistant materials"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 30 de julho de 2024

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1

Nilsson, Erik. "Oxidation of heat resistant stainless steels in a pelletizing process." Licentiate thesis, Luleå tekniska universitet, Materialvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26622.

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Godkänd; 2014; 20140331 (niriel); Nedanstående person kommer att hålla licentiatseminarium för avläggande av teknologie licentiatexamen. Namn: Erik Nilsson Ämne: Konstruktionsmaterial/Engineering Materials Uppsats: Oxidation of Heat Resistant Stainless Steels in a Pelletizing Process Examinator: Biträdande professor Marta-Lena Antti, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Diskutant: Ph.D., Research Leader Rikard Norling, Swerea KIMAB AB, Kista Tid: Tisdag den 27 maj 2014 kl 10.00 Plats: E632, Luleå tekniska universitet

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2

Davis, Robert Bruce. "Design and development of advanced castable refractory materials /." Full text open access at:, 2001. http://content.ohsu.edu/u?/etd,187.

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3

Nam, Jae-Do. "Polymer matrix degradation : characterization and manufacturing process for high temperature composites /." Thesis, Connect to this title online; UW restricted, 1991. http://hdl.handle.net/1773/9867.

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4

Peng, Wu Tseng. "Evaluation of ceramic candle filters degradation and damage location using four-point bending tests." Morgantown, W. Va. : [West Virginia University Libraries], 1999. http://etd.wvu.edu/templates/showETD.cfm?recnum=1105.

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Thesis (M.S.)--West Virginia University, 1999.<br>Title from document title page. Document formatted into pages; contains x, 85 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 81-82).

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5

Chhasatia, Viralsinh. "Characterization of thermal interface materials using flash diffusivity and infrared microscopy methods." Diss., Online access via UMI:, 2009.

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Thesis (M.S.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Science, Department of Mechanical Engineering, 2009.<br>Includes bibliographical references.

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6

Fox, Bronwyn Louise. "The manufacture, characterization and aging of novel high temperature carbon fibre composites." View thesis entry in Australian Digital Theses Program, 2001. http://thesis.anu.edu.au/public/adt-ANU20011207.114246/index.html.

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7

Khattab, Ahmed. "Exploratory development of VARIM process for manufacturing high temperature polymer matrix composites." Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4186.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2006.<br>The 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 (month day, year) Vita. Includes bibliographical references.

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8

Marenkov, V. I. "Fermi level of carriers in the volume filling defects structure based on heat-resistant metals." Thesis, Sumy State University, 2011. http://essuir.sumdu.edu.ua/handle/123456789/20600.

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The volume filling defects structure based on metals are widely used in modern nan- otechnology, especially when creating high temperature sensors and structural elements based on metal foams [1]. The development of contactless and nondestructive methods for diagnosis and test control parameters of multiply connected matrix base material is a very important and interesting aspect of the application [2]. In a heat-resistant metal with the volume filling defects (VFD) (micro- and nanopores with complex topologies and sizes, see. Figure 1) it is primarily its strength and electrical an

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9

Yan, Jin. "Aspects of instrumented indentation with applications to thermal barrier coatings." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 177 p, 2007. http://proquest.umi.com/pqdweb?did=1397913961&sid=17&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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10

Renier, Mark C. "Equipment and process development for fabrication of rhenium-based composites by chemical vapor infiltration." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/18915.

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11

de, Bussac Arnaud. "A study of deformation and fatigue in model Ni-base superalloys." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/20174.

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12

Lundberg, Daniel, Filip Wilson, Hjalmar Gunnarsson, Leo Sjörén, Robin Xu, and Erik Djurberg. "Long term aging and creep exposure for advanced heat resistant alloys : A phase analysis." Thesis, Uppsala universitet, Institutionen för materialvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-446407.

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This project was ordered by Sandvik Materials Technology and was performed by a group of students at Uppsala university. The purpose of the project was to study precipitation behavior and structure stability in six advanced heat resistant alloys. Each sample were subjected to a creep rupture test in 600 or 700°C depending on the alloy type. Two parts of each alloy where examined; one part which had been affected by creep and another part which was unaffected by creep. A literature study was performed first to gain knowledge of the scientific theory utilized in this project, namely creep, preci

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13

Liu, Yi Johnson R. Wayne. "Packaging of silicon carbide high temperature, high power devices processes and materials /." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Spring/doctoral/LIU_YI_31.pdf.

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14

Yu, Xinghua. "Characterization and Modeling of Heat Affected Zone Microstucture in a Blast Resistant Steel." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1262201157.

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15

Lopes, Shailesh M. "Synthesis, characterization and applications of fats and oil derived phase change materials." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5938.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2007.<br>The 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 March 20, 2009) Vita. Includes bibliographical references.

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16

Fernandez-Zelaia, Patxi. "Thermomechanical fatigue crack formation in nickel-base superalloys at notches." Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/48991.

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Hot sections of gas engine turbines require specialized materials to withstand extreme conditions present during engine operation. Nickel-base superalloys are typically used as blades and disks in the high pressure turbine section because they possess excellent fatigue strength, creep strength and corrosion resistance at elevated temperatures. Components undergo thermomechanical fatigue conditions as a result of transient engine operation. Sharp geometric features, such as cooling holes in blades or fir-tree connections in disks, act as local stress raisers. The material surrounding these feat

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17

Nilsson, Erik A. A. "Degradation Mechanisms of Heat Resistant Steel at Elevated Temperatures : In an Iron Ore Pelletizing Industry." Doctoral thesis, Luleå tekniska universitet, Materialvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-62162.

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This thesis focuses on the different degradation mechanisms of the stainless steel in a travelling grate in a Grate-Kiln iron ore pellet indurator. The travelling grate is a conveyor belt that transports green-body pellets to a rotary kiln while the pellets are being dried and pre-heated to a temperature of 900-1100 °C by recycled hot air. After unloading of the pellets to the rotary-kiln for further sintering, the travelling grate is cooled in room temperature while returning to the loading zone of the wet pellets. The steel was tested during thermal cycling in a test-rig, in order to simulat

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18

Ibanez, Alejandro R. "Modeling creep behavior in a directionally solidified nickel base superalloy." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/5353.

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19

Teague, Michael Phillip. "Modeling and measurement of thermal residual stresses and isotope effects on thermo physical properties of ZrB₂-SiC ceramics." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2008. http://scholarsmine.mst.edu/thesis/pdf/MichaelTeague_09007dcc8056387c.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2008.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 27, 2008) Includes bibliographical references.

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20

Namjoshi, Shanatanu Ashok. "Reaction synthesis of dynamically-densified Ti-based intermetallic and ceramic forming powders." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/19572.

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21

Boldt, Paul Henry. "Room temperature indentation of molybdenum disilicide." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/NQ42836.pdf.

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22

Ventura, Julieta Angelica. "High temperature oxidation behavior of Nb-20Mo-15Si-5B-20Cr alloy." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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23

Rockett, Chris H. "Flexural Testing of Molybdenum-Silicon-Boron Alloys Reacted from Molybdenum, Silicon Nitride, and Boron Nitride." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16293.

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MoSiB alloys show promise as the next-generation turbine blade material due to their high-temperature strength and oxidation resistance afforded by a protective borosilicate surface layer. Powder processing and reactive synthesis of these alloys has proven to be a viable method and offers several advantages over conventional melt processing routes. Microstructures obtained have well-dispersed intermetallics in a continuous matrix of molybdenum solid-solution (Mo-ss). However, bend testing of pure Mo and Mo-ss samples has shown that, while the powder processing route can produce ductile Mo meta

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24

Middlemas, Michael Robert. "A Nitride-Based Reaction for the Formation of a Three-Phase Molybdenum-Silicon-Boron Intermetallic Alloy." Thesis, Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7190.

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The alloy Mo-3Si-1B (wt%) may have the fracture toughness and oxidation resistance required for use as jet turbine engine blades. Mo-3Si-1B (wt%) forms a three-phase mixture of and #945;-Moss, A15 (Mo3Si) and T2 (Mo5SiB2). It has been observed that at high-temperatures, the A15 and T2 intermetallics form a oxidation resistant borosilicate glass coating. To achieve the proper combination of mechanical and thermal properties, the material must have a molybdenum matrix with a fine dispersion of intermetallics to produce a continuous protective layer. In this project, reactive sintering of mo

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25

Lipke, David William. "Novel reaction processing techniques for the fabrication of ultra-high temperature metal/ceramic composites with tailorable microstructures." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/43750.

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Ultra-high temperature (i.e., greater than 2500°C) engineering applications present continued materials challenges. Refractory metal/ceramic composites have great potential to satisfy the demands of extreme environments (e.g., the environments found in solid rocket motors upon ignition), though general scalable processing techniques to fabricate complex shaped parts are lacking. The work embodied in this dissertation advances scientific knowledge in the development of processing techniques to form complex, near net-shape, near net-dimension, near fully-dense refractory metal/ceramic composites

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26

Pang, Lisa Yee San. "Thin film diamond : electronic devices for high temperature, high power and high radiation applications." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313317.

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27

Sharpe, Heather Joan. "Effect of Microstructure on High-Temperature Mechanical Behavior of Nickel-Base Superalloys for Turbine Disc Applications." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16255.

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Engineers constantly seek advancements in the performance of aircraft and power generation engines, including, lower costs and emissions, and improved fuel efficiency. Nickel-base superalloys are the material of choice for turbine discs, which experience some of the highest temperatures and stresses in the engine. Engine performance is proportional to operating temperatures. Consequently, the high-temperature capabilities of disc materials limit the performance of gas-turbine engines. Therefore, any improvements to engine performance necessitate improved alloy performance. In order to take a

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28

LEITE, ANTONIO M. dos S. "Investigação da resistência à corrosão por pites do aço inoxidável duplex tipo 2404 (UNS S82441) submetido à soldagem por atrito com pino não-consumível (FSW)." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28016.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-17T16:32:32Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-17T16:32:32Z (GMT). No. of bitstreams: 0<br>Os aços inoxidáveis duplex são largamente utilizados na fabricação de equipamentos para a indústria de óleo e gás, utilizados tanto no ambiente onshore quanto offshore. Sua grande limitação é que, com o aumento de temperatura, ocorre precipitação de fases indesejáveis, que reduzem drasticamente a resistência à corrosão e as propriedades mecânicas desses materiais. Considerando o efeito deletério da soldagem a fusão nos

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29

Gockel, Brian Timothy. "Developing the capability to examine environmental effects on small fatigue crack growth." Dayton, Ohio : University of Dayton, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1271184488.

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Thesis (M.S. in Mechanical Engineering) -- University of Dayton.<br>Title from PDF t.p. (viewed 06/22/10). Advisor: Robert Brockman. Includes bibliographical references (p. 42-44). Available online via the OhioLINK ETD Center.

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30

Nguyen, QuynhGiao N. "High Temperature Volatility and Oxidation Measurements of Titanium and Silicon Containing Ceramic Materials." Abstract only. Full text release has been delayed at the author's request until December 31, 2010, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1239291812.

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Thesis (Ph.D.)--Cleveland State University, 2008<br>Abstract. Includes bibliographical references (p. 110-111). Electronic full text release has been delayed at the author's request until December 31, 2010.

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31

Saillard, Audric. "Modeling and simulation of stress-induced non-uniform oxide scale growth during high-temperature oxidation of metallic alloys." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33898.

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The metallic alloys employed in oxidizing environment at high temperature rely on the development of a protective oxide scale to sustain the long-term aggressive exposition. However, the oxide scale growth is most of the time coupled with stress and morphological developments limiting its lifetime and then jeopardizing the metallic component reliability. In this study, a mechanism of local stress effect on the oxidation kinetics at the metal/oxide interface is investigated. The objective is to improve the understanding on the possible interactions between stress generation and non-uniform oxid

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32

Morata, Royes Joan. "Wear resistance of heat-treated Advanced High Strength Steels and casting." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80526.

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The necessity to improve the durability of the machinery used in the milling industry has lead to several types of research. One study is focused on the plates that are located in the stationary and moving jaws of crushers to diminish particles sizes of Gneiss and Diabase rocks. Thus, one type of approach to increase its durability is by reducing the material loss of the plates. Amongst all the parameters to reduce the wear ratio that includes inputs from geometry to load, just the hardness input of the material can be in constant development. Consequently, there are two well-known types of he

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33

Bloss, Matthew C. "Ultrasonic metal welding the weldability of stainless steel, titanium, and nickel-based superalloys /." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1198168491.

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34

Adair, Benjamin Scott. "Thermo-mechanical fatigue crack growth of a polycrystalline superalloy." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/46027.

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A study was done to determine the temperature and load interaction effects on the fatigue crack growth rate of polycrystalline superalloy IN100. Temperature interaction testing was performed by cycling between 316°C and 649°C in blocks of 1, 10 and 100 cycles. Load interaction testing in the form of single overloads was performed at 316°C and 649°C. After compiling a database of constant temperature, constant amplitude FCGR data for IN100, fatigue crack growth predictions assuming no load or temperature interactions were made. Experimental fatigue crack propagation data was then compared and c

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35

Пітак, Ярослав Миколайович. "Вогнетривкі та жаростійкі неформовані матеріали на основі композицій системи RO – R₂O₃ – RO₂ – P₂O₅". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2005. http://repository.kpi.kharkov.ua/handle/KhPI-Press/40380.

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Дисертація на здобуття наукового ступеня доктора технічних наук за спеціальністю 05.17.11 – технологія тугоплавких неметалічних матеріалів. – Національний технічний університет “Харківський політехнічний інститут”, Харків, 2005. Дисертація присвячена розробці наукової концепції створення вогнетривких та жаростійких неформованих матеріалів на основі композицій системи RO – R₂O₃ – RO₂ – P₂O₅. Досліджено субсолідусну будову чотирикомпонентних систем: M–A–S–P, C–А–S–P, Zn–Z–S–B, Zn–A–Z–S, C–M–S–P, A–Z–S–P, M–Z–S–P, C–A–S–B, C–A–Z–S, C–M–A–S, C–Sr–A–Z. Визначено співіснуючі фази в системах, виконан

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36

Pathak, Sayali V. "Enhanced Heat Transfer in Composite Materials." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1368105955.

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37

Cross, Robert. "Processing of vertically aligned carbon nanotubes for heat transfer applications." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/31828.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Graham, Samuel; Committee Member: Das, Suman; Committee Member: Joshi, Yogendra. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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38

Hong, Charles S. M. Eng Massachusetts Institute of Technology. "Improving the heat, fire, and melt resistance of elastomeric seals on military gas masks." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/54549.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 62-63).<br>Improvised Explosive Devices (IED's) have wreaked havoc amongst American and Coalition troops. They have been the number one killer of Coalition forces. Many times the impact knock out fuel tanks which then catch on fire, causing life threatening burn injuries. As a counter, the military unveiled new fire/melt resistant clothing. In the case of a chemically contaminated environment, the soldier

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39

Joubert, K. J. "The influence of tempering on the corrosion resistance of newly developed steels." Master's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/21797.

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Bibliography: pages 105-113.<br>This thesis deals with the effect of heat treatment on the localized corrosion resistance of the low carbon, chromium containing steels, designated 825, 102A and 122 which recently have been developed. The potentiodynamic polarization technique has been employed to determine the corrosion characteristics of the three steels. The results do not accurately reflect the effect heat treatment has on corrosion rates but scanning electron microscopy of corroded surfaces does allow a characterization. Both tempering temperature and time at temperature have a significant

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40

Seidl, Jakub. "Návrh podnikového finančního plánu." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2020. http://www.nusl.cz/ntk/nusl-417364.

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This master’s thesis is focused on a Draft of a Corporate Financial Plan for industrial company P-D Refractories CZ a.s. for years 2019 to 2022. First chapter of this master’s thesis is oriented in goals, methods and approaches of this thesis. Next part is aiming at theoretical solution for financial planning. Third chapter contains information about analyzed company, application of selected methods of strategic analysis and financial analysis including evaluation of the state of company and detection of potential deficiencies. Last chapter of this thesis is focused on suggestion, formation an

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41

Monobe, Luis Shiguenobu. "Caracterização do envelhecimento da liga 20Cr32Ni+Nb fundida por centrifugação e de seu efeito sobre o comportamento mecânico a frio." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-08012008-155251/.

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Fornos petroquímicos constituem a parte mais importante da indústria de derivados de petróleo. São nesses fornos que se processam as reações químicas imprescindíveis ao processamento dos produtos que constituem nosso cotidiano, como os fertilizantes, polímeros, produtos farmacêuticos e alimentícios. Devido ao caráter fortemente endotérmico dos processos, associado a reações catalíticas provocada numa mistura reacional de vapor de água com hidrocarbonetos (caso da reforma para obtenção de hidrogênio) ou craqueamento por pirólise (processo de pirólise), estes fornos são continuamente aquecidos.

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42

Houl, Yassine. "Increasing Effective Thermal Resistance of Building Envelope's Insulation Using Polyurethane Foam Incorporated with Phase Change Material." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1505159/.

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Incorporating insulation material with phase change materials (PCMs) could help enhance the insulation capability for further building energy savings by reducing the HVAC loadings. During the phase change process between the solid and liquid states, heat is being absorbed or released by PCMs depending on the surrounding temperature. This research explores the benefits of a polyurethane (PU)-PCM composite insulation material through infiltrating paraffin wax as PCM into PU open cell foam. The new PU-PCM composite provides extra shielding from the exterior hot temperatures for buildings. Through

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43

Kasali, Suraju Olawale. "Thermal diodes based on phase-change materials." Thesis, Poitiers, 2021. http://www.theses.fr/2021POIT2254.

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Nous étudions dans cette thèse la rectification thermique de diodes thermiques radiatives ou conductive constituées de matériaux à changement de phase.Cette thèse est divisée en trois parties. Dans les premières parties, nous modélisons comparativement les performances d’une diode thermique conductive sphérique et cylindrique constitués de VO2 présentant un transition de phase et des matériaux n’en présentant pas. Des expressions analytiques aux bornes des diodes sont dérivées. Des flux thermiques, des facteurs de rectifications ainsi que les profils de température à l’intérieur de la diode so

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44

Müller, Jiří. "Kotevní silikátový expanzní materiál se zvýšenou teplotní odolností." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-392344.

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This master thesis deals with the development of an expansive anchor material. This material is intended especially for the engineering and power industry where the operating conditions cause thermal stresses of the anchor. In order to meet the requirements for a firm and secure connection of the anchored part, it is necessary to achieve excellent physical-mechanical properties of the developed material such as high compressive strength, high tensile strength based on the base, and resistance to thermal stresses till 200 ° C. All of these processes must be achieved after the ageing of the ceme

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Friček, Jakub. "Sledování vlivu keramické vazby na vlastnosti izolačních žáromateriálů." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225890.

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Thermal insulating refractories are an integral part of each thermal unit since they reduce its energy consumption. The current phenomenon of saving in both environmental and financial aspects reflects in searching for such possibilities to produce at lower manufacturing and material costs. One of the possible ways is to valorise waste materials. The theoretical part then deals with the division of refractory materials, classification of thermal insulation refractory materials and manufacturing technologies. The experiment is focused on the production of insulating refractory materials made fr

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TRIBUIANI, CHIARA. "Analisi sperimentale di componenti edilizi per la riqualificazione energetica degli edifici." Doctoral thesis, Università Politecnica delle Marche, 2021. http://hdl.handle.net/11566/291054.

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Oggetto principale del progetto di ricerca è stata la valutazione del comportamento energetico di componenti edilizi attraverso l’analisi sperimentale in situ con la realizzazione di mock up configurati per lo scopo. In prima battuta, lo studio si è concentrato sulle problematiche inerenti ai consumi energetici estivi, il comfort interno e la salubrità degli ambienti prefiggendosi l’obiettivo di analizzare nuove strategie per l’ottimizzazione dell’involucro edilizio. La tematica dell’isolamento termico è stata, quindi, declinata sotto diversi aspetti: tipologia dei materiali isolanti e le lo

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Pourrahimi, Amir Masoud. "The synthesis, surface modification and use of metal-oxide nanoparticles in polyethylene for ultra-low transmission-loss HVDC cable insulation materials." Doctoral thesis, KTH, Polymera material, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190808.

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Polyethylene composites which contain low concentrations of metal-oxide nanoparticles e.g. ZnO and MgO are emerging materials for the use in insulations of extruded high-voltage direct-current (HVDC) cables. The challenge in the development of the composites with ultra-low electrical conductivity is to synthesize uniform and high-purity metal-oxide nanoparticles, which are functionalized with hydrophobic groups in order to make them compatible with polyethylene. The thesis reports different approaches to prepare this new generation of insulation materials. Different reaction parameters/conditi

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Bravenec, David. "Diagnostika a návrh eliminace tepelných mostů budov." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265536.

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This thesis presents a comparison of building materials for vertical bearing structures of buildings, thermal insulation materials and mutual combination of structural materials and insulators. Furthermore, there are possibilities for solving the most common insulation thermal bridges construction. The paper evaluated the pros and cons of different combinations of building materials. Teplo and Area programs were used for the calculations.

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Guéroult, Bertrand. "Influence de la microstructure sur la resistance a l'usure des ceramiques : etude de traitements post-frittage et developpement d'un essai de rayage." Paris, ENMP, 1987. http://www.theses.fr/1987ENMP0094.

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On a cherche a mettre en evidence les differents effets de la microstructure et des proprietes intrinseques des materiaux etudies (al::(2)o::(3), sic, sialon) sur les mecanismes d'enlevement de matiere lors de l'usure par frottement a sec. Des modifications microstructurales ou morphologiques ont ete tentees par divers traitements de frittage ou de post-frittage. En particulier, on a etudie les effets du pressage isostatique chaud et de l'implantation ionique sur les proprietes mecaniques et tribologiques du sialon fritte. On a developpe un essai de rayage pour remplacer les essais d'indentati

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Kinkelin, Christophe. "Etude expérimentale d’un amortisseur thermique composite MCP-NTC." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEI100/document.

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L’amortisseur thermique étudié dans le cadre de cette thèse a pour objectif de limiter les pics de température des composants électroniques fonctionnant en régime transitoire au moyen d’une structure composite consistant en un réseau de nanotubes de carbone (NTC) rempli de matériau à changement de phase (MCP) solide-liquide, le tout étant contenu dans un boîtier en silicium (Si). Ce système passif vise à augmenter l’inertie thermique volumique du composant grâce à la chaleur latente du MCP tout en maintenant une bonne conductance thermique grâce aux NTC. Un dispositif expérimental polyvalent a

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