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Dissertations / Theses on the topic 'Tensile Strength Ratio'

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1

Kock, Jeffrey Wayne. "Physical and Mechanical Properties of Chicken Feather Materials." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/10555.

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Materials derived from chicken feathers could be used advantageously in composite building material applications. Such applications could potentially consume the five billion pounds of feathers produced annually as a by-product of the U.S. poultry industry. To aid the development of successful applications for chicken feather materials (CFM), the physical and mechanical properties of processed CFM have been characterized in this research. Results describing the moisture content, aspect ratio, apparent specific gravity, chemical durability, Youngs modulus, and tensile strength for processed
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2

Elmabrouk, Omar Mustafa. "An Investigation Of Compacted Graphite Cast Iron Production By Means Of Thermal Analysis Technique And Other Process Control Windows." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/3/12608096/index.pdf.

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ABSTRACT AN INVESTIGATION OF COMPACTED GRAPHITE IRON PRODUCTION BY MEANS OF THERMAL ANALYSIS TECHNIQUE AND OTHER PROCESS CONTROL WINDOWS El-mabrouk, Omar PhD, Metallurgical and Material Engineering Department Supervisor: Prof. Dr. Ali Kalkanli January 2007, 123 pages Compacted graphite irons have been proved valuable in many applications such as exhaust manifolds, hydraulic valves, and diesel engine blocks, the process of producing compacted graphite irons is not a straight forward process because of its narrow processing windows and its high sensitivity to the section thickness, treatm
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3

Ajaxon, Ingrid. "Can Bone Void Fillers Carry Load? : Behaviour of Calcium Phosphate Cements Under Different Loading Scenarios." Doctoral thesis, Uppsala universitet, Tillämpad materialvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-316656.

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Calcium phosphate cements (CPCs) are used as bone void fillers and as complements to hardware in fracture fixation. The aim of this thesis was to investigate the possibilities and limitations of the CPCs’ mechanical properties, and find out if these ceramic bone cements can carry application-specific loads, alone or as part of a construct. Recently developed experimental brushite and apatite cements were found to have a significantly higher strength in compression, tension and flexion compared to the commercially available CPCs chronOS™ Inject and Norian® SRS®. By using a high-resolution measu
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4

Pokluda, Radim. "Stavební recykláty pro stmelené směsi vozovek." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226040.

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In the theoretical part of the thesis are generally characterized hydraulically bound mixtures, their types, classification systems, manufacturing technology and the laying. There are also described experiences from abroad with the use secondary and recycled materials in hydraulically bound mixtures. The practical part deals with the experimental verification of the possibility of the use of secondary materials in hydraulically bound mixtures in construction of road infrastructure. In road laboratory Institute of road structures Brno university of technology was the five proposed mixtures, an
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ALMEIDA, JUNIOR Lauber Jose dos Santos. "ESTUDO DO COMPORTAMENTO DE RESINAS BULK FILL EM RESTAURAÇÕES CLASSE I POR MEIO DE MICROTOMOGRAFIA COMPUTADORIZADA E MICROTRAÇÃO." Universidade Federal do Maranhão, 2017. http://tedebc.ufma.br:8080/jspui/handle/tede/1646.

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Submitted by Daniella Santos (daniella.santos@ufma.br) on 2017-06-20T14:13:09Z No. of bitstreams: 1 Lauber Jose.pdf: 935752 bytes, checksum: 4853ee9a573d926513f92f2560f03c9a (MD5)<br>Made available in DSpace on 2017-06-20T14:13:10Z (GMT). No. of bitstreams: 1 Lauber Jose.pdf: 935752 bytes, checksum: 4853ee9a573d926513f92f2560f03c9a (MD5) Previous issue date: 2017-06-12<br>FAPEMA<br>The polymerization shrinkage (PS) and the detrimental effects have been the focus of studies with the aim of improving the performance of composite resins. The simplicity of technique due to the possibility of sin
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Domingos, Cristiane Spolador Pátaro. "Estudo da resistência mecânica do ligamento cruzado anterior de ratos submetidos à imobilização." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/82/82131/tde-17102017-112127/.

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O efeito da imobilização no ligamento cruzado anterior, através de atadura gessada por um período de 6 semanas, foi estudado em ratos machos, adultos da raça Wistar. Para esta análise foram desenvolvidos dispositivos que permitiram a fixação do espécime à Máquina de Ensaio Universal e a realização de ensaio mecânico de tração. Através desta metodologia a tração foi aplicada na interlinha articular, somente na junção osso-ligamento-osso. Os dados obtidos foram analisados, quanto à carga máxima, deformação máxima, e energia absorvida pelo ligamento até o momento da ruptura. Nos resultados obtido
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7

Baumgarten, Lars. "Gesteinsmechanische Versuche und petrophysikalische Untersuchungen – Laborergebnisse und numerische Simulationen." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2016. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-202612.

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Dreiaxiale Druckprüfungen können als Einstufenversuche, als Mehrstufenversuche oder als Versuche mit kontinuierlichen Bruchzuständen ausgeführt werden. Bei der Anwendung der Mehrstufentechnik ergeben sich insbesondere Fragestellungen hinsichtlich der richtigen Wahl des Umschaltpunktes und des optimalen Verlaufs des Spannungspfades zwischen den einzelnen Versuchsstufen. Fraglich beim Versuch mit kontinuierlichen Bruchzuständen bleibt, ob im Versuchsverlauf tatsächlich Spannungszustände erfasst werden, welche die Höchstfestigkeit des untersuchten Materials repräsentieren. Die Dissertation greift
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8

Alvarenga, Jackeline Couto. "Curvas de referência dos parâmetros ósseos obtidos por tomografia computadorizada quantitativa periférica de alta resolução (HR-pQCT) em mulheres saudáveis de 20 a 85 anos de idade." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/5/5166/tde-11092015-161411/.

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INTRODUÇÃO: O osso é um tecido dinâmico e a formação e reabsorção óssea são processos contínuos que promovem alterações durante toda a vida do organismo. O objetivo deste estudo transversal é estabelecer valores normais relacionadas com a idade, peso e altura, obtidos pela tomografia computadorizada quantitativa periférica de alta resolução (HR-pQCT) quanto à densidade mineral óssea volumétrica, microarquitetura, porosidade cortical e resistência óssea estimada por análise de elemento finito no rádio distal e na tíbia de uma população miscigenada de mulheres com idade entre 20 a 85 anos. MÉTOD
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9

Clark, Tad Dee. "An Analysis of Microstructure and Corrosion Resistance in Underwater Friction Stir Welded 304L Stainless Steel." Diss., BYU ScholarsArchive, 2005. http://contentdm.lib.byu.edu/ETD/image/etd872.pdf.

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10

Hinckel, Betina Bremer. "Estudo anatômico, radiográfico e biomecânico dos estabilizadores mediais da patela: ligamento patelofemoral medial, ligamento patelotibial medial e ligamento patelomeniscal medial." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/5/5140/tde-05102016-132557/.

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INTRODUÇÃO: Os ligamentos mediais responsáveis pela manutenção da estabilidade da articulação patelofemoral (PF) são o ligamento patelofemoral medial (LPFM), o ligamento patelotibial medial (LPTM) e o ligamento patelomeniscal medial (LPMM). Sobre o LPFM, existem vários estudos anatômicos, radiológicos, biomecânicos, e a evolução clínica de sua lesão e reconstrução; no entanto, pouco se sabe sobre o LPTM e o LPMM. MÉTODOS: O LPFM, o LPTM e o LPMM foram dissecados em 9 joelhos. Todos os ligamentos foram enviados para avaliação histológica, corados pelo método de hematoxilina e eosina (HE), após
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11

Kesawan, Sivakumar. "Fire performance and design of light gauge steel frame wall systems made of hollow flange sections." Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/120153/1/Kesawan_Sivakumar_Thesis.pdf.

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Load bearing Light Gauge Steel Frame (LSF) wall system is a cold-formed steel structure made of cold-formed steel studs and lined on both sides by gypsum plasterboards. In recent times its use and demand in the building industry has significantly increased due to their advantages such as light weight, acoustic performance, aesthetic quality of finished wall, ease of fabrication and rapid constructability. Fire Resistant Rating (FRR) of these walls is given more attention due to the increasing number and severity of fire related accidents in residential buildings that have caused significant lo
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12

Wei-MinLu and 呂偉民. "Effects of Hot Forging Ratio and Solution Treatment on Microstructural Feature and Tensile Properties of High Strength 6069 Aluminum Alloy." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/42599911454903239719.

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碩士<br>國立成功大學<br>材料科學及工程學系<br>102<br>6069 Al alloy is an Al-Mg-Si alloy which has high specific strength, thermo conductivity, good corrosion resistance and formability, and widely used in transport industry. This research study in distribution of alloy elements and tensile properties with various the T4 treatment and different hot forging ratio. Results showed that the two-stepped solution heat treatment shows the more uniform distribution of Cu. 550 °C and two-stepped of T4 treatment have better tensile properties in disk part. In rim part, observation of casting feature is the defect which c
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13

Kasonde, Maweja. "Optimising the mechanical properties and microstructure of armoured steel plate in quenched and tempered condition." Diss., 2006. http://hdl.handle.net/2263/23576.

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The effect of the chemical composition, austenitisation temperature and tempering temperature and time on the mechanical properties and on the ballistic performance of martensitic steel armour plates was studied. It was established in this study that the mechanical properties and the ballistic performance of martensitic steels can be optimised by controlling the chemical composition and the heat treatment parameters. However, it was observed that for a given chemical composition of the steel the heat treatment parameters to be applied to advanced ballistic performance armour plates were differ
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14

Kollipara, Prasad Rao Venkatesh. "In-depth evaluationof the effects of tensile strength ratios on service life and pay factors of asphaltic pavements." 2003. http://www.lib.ncsu.edu/theses/available/etd-05122003-171609/unrestricted/etd.pdf.

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15

Baumgarten, Lars. "Gesteinsmechanische Versuche und petrophysikalische Untersuchungen – Laborergebnisse und numerische Simulationen." Doctoral thesis, 2015. https://tubaf.qucosa.de/id/qucosa%3A23031.

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Dreiaxiale Druckprüfungen können als Einstufenversuche, als Mehrstufenversuche oder als Versuche mit kontinuierlichen Bruchzuständen ausgeführt werden. Bei der Anwendung der Mehrstufentechnik ergeben sich insbesondere Fragestellungen hinsichtlich der richtigen Wahl des Umschaltpunktes und des optimalen Verlaufs des Spannungspfades zwischen den einzelnen Versuchsstufen. Fraglich beim Versuch mit kontinuierlichen Bruchzuständen bleibt, ob im Versuchsverlauf tatsächlich Spannungszustände erfasst werden, welche die Höchstfestigkeit des untersuchten Materials repräsentieren. Die Dissertation greift
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