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Dissertations / Theses on the topic 'Tensile test'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Yin, Penghai. "Tensile Strength of Unsaturated Soils." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/41841.

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Desiccation-induced soil cracking is of significant interest in several engineering disciplines, which include geotechnical and geoenvironmental engineering, mining engineering, and agriculture engineering. The hydraulic, mechanical, thermal and other physico-chemical properties of unsaturated soils can be predominantly influenced due to cracks. Reliable information of these properties is required for the rational design and maintenance of earth structures taking account of the influence the soil-atmosphere interactions (e.g., for expansive soil slopes, earth dams, and embankments). In spite o

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2

Berry, Carolyn. "DESIGN AND DEVELOPMENT OF TWO TEST FIXTURES TO TEST THE LONGITUDINAL AND TRANSVERSE TENSILE PROPERTIES OF SMALL DIAMETER TUBULAR POLYMERS." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/494.

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Hundreds of thousands of vascular bypass grafts are implanted in the United States every year, but there has yet to be an ideal graft material to substitute for one’s own autologous vessel. Many synthetic materials have been shown to be successful vessel replacements; however, none have been proven to exhibit the same mechanical properties as native vessels, one of the most important criteria in selecting a vascular graft material. Part of this issue is due to the fact that, currently, there is no “gold standard” for testing the longitudinal and transverse tensile properties of small diamete

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3

Saha, Ujjal kumar, and Adis Avdic. "Simulating a tensile test of a carbon fiber composite test specimen in ABAQUS." Thesis, Högskolan i Skövde, Institutionen för teknik och samhälle, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-5173.

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This work aims at providing a numerical tool for the efficient design of the multidirectional carbon fiber reinforced composite material by means of finite element simulations. Abaqus/ CAE v 6.9-1 software has been used to establish a 3D model for simulation of the tensile test on the composite specimen. The aim of this analysis of multidirectional carbon fiber reinforced composite is to predict the strain and stress distribution in different plies through thickness. Tensile test experiment was carried out and the result was analyzed by ARAMIS to calculate the young’s modulus, stress, loads an

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4

Gao, Yufei. "Model of Heat Generation Effects During Uniaxial Tensile Test." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1391590277.

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5

Lin, Muh-Ren. "Experimental Investigation of Temperature Effect on Uniaxial Tensile Test." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392371542.

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6

Lin, Muh-ren. "Experimental investigation of temperature effect on uniaxial tensile test /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487266011224679.

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7

Stehn, Lars. "Tensile fracture of ice : test methods and fracture mechanics analysis." Doctoral thesis, Luleå tekniska universitet, Byggkonstruktion och -produktion, 1993. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18394.

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This thesis is concerned with several aspects of fracture of both brackish (low salinity) sea ice and freshwater ice. The tests and analyses are confined to tensile, or in fracture mechanics language, Mode I, fracture. A large part of this thesis is dedicated to demonstrate that Linear Elastic Fracture Mechanics (LEFM) can be applicable on ice by laboratory and in-situ tests of defined specimens. All interpretations are made using the dicipline of LEFM.First, the development of a field test equipment called FIFT ( a Field Instrument for Fracture toughness Tests on ice) is described. The FIFT i

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8

Claesson, Filip. "Analysis of length effect dependencies in tensile test for paperboard." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80410.

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Paperboard combined with polymer and aluminium films are widely used in food packages. Paperboard is used for the bulk of the package material, and provides the stiffness. Paperboard is a highly anisotropic material, which is affected by how the fibers are orientated. Most fibers are aligned in the machine direction (MD), which is the stiffest direction, perpendicular is the cross-machine direction (CD) where fewer fibers are aligned, and the thickness direction (ZD) which is considerably weaker than in the MD and CD directions. Continuum models are used to describe the material properties to

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9

Nakao, S., T. Ando, L. Chen, M. Mehregany, K. Sato, and 一雄佐藤. "Mechanical characterization of SiC film at high temperatures by tensile test." IEEE, 2008. http://hdl.handle.net/2237/11140.

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10

Kakumani, Akul. "Design of a Tensile Tester to Test an Ant Neck Joint." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500559241684226.

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11

Gaspar, Tiago Alexandre Valentim. "Investigating the tensile behaviour of unsaturated soils using the Brazilian disc test." Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/62773.

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In geotechnical practice, soils are generally assumed to have negligible tensile strength. However, in the context of unsaturated soils, this strength can be significant and important to consider. In contrast to the two-phase soil matrix considered in classical saturated soil mechanics, the presence of a third air phase in unsaturated soils brings about the manifestation of surface tension and matric suction. These phenomena provide unsaturated soils with a certain degree of tensile strength, which in turn affects the overall shear strength behaviour of the soil mass. This dissertation investi

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12

Grant, Thomas Paul. "Determination of asphalt mixture healing rate using the Superpave Indirect Tensile Test." [Gainesville, Fla.] : University of Florida, 2001. http://purl.fcla.edu/fcla/etd/UFE0000321.

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Thesis (M.E.)--University of Florida, 2001.<br>Title from title page of source document. Document formatted into pages; contains xii, 82 p.; also contains graphics. Includes vita. Includes bibliographical references.

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13

López, Martínez Juan Ángel. "CHARACTERISATION OF THE TENSILE BEHAVIOUR OF UHPFRC BY MEANS OF FOUR-POINT BENDING TESTS." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/79740.

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Combining the most recent technologies in concrete, Ultra-High-Performance Fibre-Reinforced Concrete (UHPFRC) arises as a promising material for the near future. UHPFRC have shown how flexible concrete can be to adapt to the ever-changing social and environmental demands. With its high flexibility composition and its mechanical properties, UHPFRC is full of both unexplored and unexploited possibilities. Engineers should take responsibility for this task. However, it is fair to acknowledge that this is not an easy task and it requires the development of reliable and widely accepted design stand

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14

Bonthron, Björn, and Christian Jonsson. "Geogrids in cold climate : Temperature controlled tensile tests & Half-scale installation tests at different temperatures." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-63204.

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Due to the findings of extensive damage on geogrids used in a road embankment in northern Sweden, the Swedish Transport Administration (TRV) started to investigate the reason of these damages. Since the geogrids were installed at low temperature, below 0°C, it was suspected that the damages were connected the low temperature. To analyse whether low temperatures have an influence on the extent of installation damages, both a half-scale setup and temperature controlled tensile tests have been carried out on geogrids. In total five different types of geogrids have been tested; 3 extruded polyprop

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15

Choi, Young Kyu. "Development of the saturation ageing tensile stiffness (SATS) test for high modulus base materials." Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.417187.

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16

Song, Xiao. "Identification of forming limits of sheet metals with an in-plane biaxial tensile test." Thesis, Rennes, INSA, 2018. http://www.theses.fr/2018ISAR0002/document.

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Les procédés de mise en forme des tôles minces sont largement utilisés dans l'industrie. L’utilisation optimale des alliages légers ou des aciers à haute résistance, propices à des économies d’énergie dans le domaine des transports, nécessite une connaissance approfondie de leurs limites de formabilité. Classiquement, la formabilité d’une tôle est caractérisée par l’apparition d’une striction localisée. Cependant, pour des chargements spécifiques (chemins de déformation complexes ...), la rupture caractérise la formabilité du matériau, la courbe limite de formage à rupture (CLFR) plutôt que ce

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17

Erdiller, Emrah Salim. "Experimental Investigation For Mechanical Properties Of Filament Wound Composite Tubes." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/3/12605140/index.pdf.

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The aim of this study is to investigate the mechanical properties of continuous fiber reinforced composite tubes, produced by filament winding technique. For this purpose, tensile and split-disk tests were performed with specimens produced with five different fiber materials and two different resin systems. Longitudinal tensile and hoop tensile properties of the selected specimens were determined and the effect of reinforcement direction on the mechanical performance of these composites was investigated. In addition, the effect of a filament-winding processing variable (fiber tension) on longi

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18

Zhang, Wenlei. "Mechanical Reliability Enhancement of Single Crystal Silicon Microstructures by Means of Diamond-Like Carbon Film Coating." Kyoto University, 2019. http://hdl.handle.net/2433/236623.

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19

Li, Xuan. "Hydrogen Effects on X80 Steel Mechanical Properties Measured by Tensile and Impact Testing." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6110.

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The effect of hydrogen charging current density and tensile strain rate on the mechanical properties of X80 pipeline steel were investigated by slow strain rate test (SSRT), Charpy impact test, and scanning electron microscopy (SEM) in this thesis. The results show that both the ultimate tensile strength and elongation to failure of X80 steel were deteriorated significantly after charging with hydrogen. With a strain rate of 5 x 10-5 s-1, the relative tensile strength and plasticity loss of X80 steel had no significant change within the range of assumed hydrogen partial pressures at room tempe

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20

Campanini, Davide. "Comparison between Direct Tensile and Single Lap Shear for FRCM/SRG composites." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/17203/.

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Negli ultimi decenni sono state sviluppati nuovi materiali e tecnologie per il rinforzo e la riabilitazione delle strutture esistenti. I sistemi più recenti per il rinforzo esterno ed il recupero strutturale sono materiali compositi costituiti da fibre raggruppate in forma di tessuto ed impregnate ed immerse in una matrice inorganica. Quando il tessuto è composto da fibre di aramide, vetro, basalto, PBO o carbonio, questi compositi sono comunemente definiti Fabric Reinforced Cementitious Matrix (FRCM), mentre, quando il tessuto è fatto da micro-trefoli di acciaio, sono definiti Steel Reinforce

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21

Stuhlen, Birgit. "The mechanical design of turgid plant tissues." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312582.

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22

Makhothe, Kelebohile. "The effect of different parameters on the rupture properties of leather in a tensile test." Thesis, Rhodes University, 1998. http://hdl.handle.net/10962/d1005247.

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This thesis explores the effect of some parameters on the breaking strain, strength and the shape of the stress-strain curve of bovine leather as revealed by uniaxial tensile tests. The parameters explored are fatliquoring, moisture content, strain rate and cyclic stressing. A basic mechanical model of a simple two-dimensional weave is created and used to describe the effect of such a weave on the shape of the stress-strain curve. It is found that fatliquoring lubricates and opens up the fibre structure and thereby makes the weave more extensible. The increase in the extensibility depends on t

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23

Wen, Haifang. "Fatigue Performance Evaluation of WesTrack Asphalt Mixtures Based on Viscoelastic Analysis of Indirect Tensile Test." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010804-014530.

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<p>This dissertation presents the viscoelastic characterization of asphalt concrete in indirect tensile testing and the development of a simple performance test for fatigue cracking. The analytical solutions to calculate creep compliance and center strain from displacements measured on the specimen surface were developed based upon the theory of viscoelasticity. These developments were verified by 3-D finite element viscoelastic analysis and tests. A simple performance test was developed based on these solutions and work potential theory. To evaluate its validity, the indirect tensile tests we

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24

Milot, Timothy S. "Establishing Correlations for Predicting Tensile Properties Based on the Shear Punch Test and Vickers Microhardness data." Thesis, University of California, Santa Barbara, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=1536555.

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<p> A series of mechanical tests was performed on a matrix of pressure vessel alloys to establish correlations between shear punch tests (SPT), microhardness (Hv), and tensile data. The purpose is to estimate tensile properties from SPT and Hv data. Small specimen testing is central to characterization of irradiation-induced changes in alloys used for nuclear applications. SPT have the potential for estimating tensile yield and ultimate strengths, strain hardening and ductility data, by using TEM disks, for example. Additional insight into SPT was gained by performing finite element analys

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25

Weise, Christiane. "Beschreibung des Ermüdungsverhaltens von Asphaltgemischen unter Verwendung von ein- und mehraxialen Zugschwellversuchen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1232368978923-01734.

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Für die Ermittlung der Ermüdungsfunktion sowie der E-Modul-Funktion sind in den europäischen Normen verschiedene Versuchsarten vorgesehen. In Deutschland werden bisher der Einaxiale Zugschwellversuch und der Spaltzugschwellversuch angewandt. Diese vergleichsweise einfachen Versuche können das Ermüdungsverhalten eines Asphaltgemisches in situ nur mit Einschränkungen (z.B. hinsichtlich des vorherrschenden Spannungszustandes) wiedergeben. Der Triaxialversuch mit Zug-/Druckschwellbelastung kann zur realitätsnahen Untersuchung des Ermüdungsverhaltens (Ermüdungsfunktion in Verbindung mit der E-Modul

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26

Spišák, Lukáš. "Analýza plastových materiálů vyrobených aditivní technologií 3D tisku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417125.

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The diploma thesis deals with the influence of colouring additives and setting of the process parameters of 3D printing on the mechanical and surface properties of samples made of PLA material. The work describes the process of filament production, as well as the printing of normalized samples on a 3D printer using the additive method Fused Deposition Modeling. The impact of 3 types of colouring additives is evaluated on the basis of tensile test, hardness test and surface analysis. The evaluated quantities are primarily tensile strength, hardness, surface texture, roughness and corrugation. T

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27

Gordiak, Michal. "Použití protlačovacích zkoušek na miniaturních discích pro materiály s vyšší úrovní strukturní nehomogenity." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417140.

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Master's thesis deals with evaluating applicability of correlation relationships between material characteristics determined by Small Punch Test and standard tensile test for material AlSi7Mg0,6 manufactured by casting and technology SLM. Results of Small Punch Tests are correlated with yield strength, tensile strength, elongation, and Young's modulus of elasticity. For each material characteristic various correlation methods are compared, while for each method corresponding coefficients are determined. Consequently, the applicability of individual methods is evaluated by substituting coeffici

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28

Chudoba, Rostislav, Martin Konrad, Markus Schleser, Konstantin Meskouris, and Uwe Reisgen. "Parametric study of tensile response of TRC specimens reinforced with epoxy-penetrated multi-filament yarns." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244043793029-57511.

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The paper presents a meso-scopic modeling framework for the simulation of three-phase composite consisting of a brittle cementitious matrix and reinforcing AR-glass yarns impregnated with epoxy resin. The construction of the model is closely related to the experimental program covering both the meso-scale test (yarn tensile test and double sided pull-out test) and the macro-scale test in the form of tensile test on the textile reinforced concrete specimen. The predictions obtained using the model are validated using a-posteriori performed experiments.

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29

Guo, Zheying. "Mechanical Investigation of Damage in Ligaments." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/77075.

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Sprains are the most common injuries to ligamentous tissues. They are classified as first-degree, second-degree, or third-degree sprains depending upon their severity. First-degree sprains are the result of over-stretching of ligaments. Second-degree sprains involve partial tears of the ligaments. In third-degree sprains, the ligaments are completely torn. Although first- and second-degree sprains are not as severe as third-degree sprains, they occur more frequently. The mechanisms leading to sprains are still not well understood. Therefore, histo-mechanical experiments and theoretical studies

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30

Demková, Eva. "Polypropylen s řízenou dobou života." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-295673.

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The master´s thesis is focused on the characterization of degradation process of polypropylene and polypropylene with statistic copolymer into which manganese (II) stearate and cobalt (II) stearates were added at 0.05, 0.10 and 0.20 wt.% loadings. The aim of the thesis was to prepare the controlled life-time polypropylene. The degradation was studied at varying temperatures and prodegradant loadings. The prodegradants were synthetized and characterized using the FTIR and DSC techniques. Thermooxidation of the tested samples induced the changes in crystallinity, melting points and melt-flow ind

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31

Kannan, Manigandan. "The Microstructure, Hardness, Impact Toughness, Tensile Deformation and Final Fracture Behavior of Four Specialty High Strength Steels." University of Akron / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=akron1311884520.

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32

Bas, Gamze S. "Predictive Modeling For Rate Dependent Toughened-Adhesive Behavior During Impact." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1499078572477787.

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33

Weise, Christiane. "Beschreibung des Ermüdungsverhaltens von Asphaltgemischen unter Verwendung von ein- und mehraxialen Zugschwellversuchen." Doctoral thesis, Technische Universität Dresden, 2008. https://tud.qucosa.de/id/qucosa%3A23558.

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Für die Ermittlung der Ermüdungsfunktion sowie der E-Modul-Funktion sind in den europäischen Normen verschiedene Versuchsarten vorgesehen. In Deutschland werden bisher der Einaxiale Zugschwellversuch und der Spaltzugschwellversuch angewandt. Diese vergleichsweise einfachen Versuche können das Ermüdungsverhalten eines Asphaltgemisches in situ nur mit Einschränkungen (z.B. hinsichtlich des vorherrschenden Spannungszustandes) wiedergeben. Der Triaxialversuch mit Zug-/Druckschwellbelastung kann zur realitätsnahen Untersuchung des Ermüdungsverhaltens (Ermüdungsfunktion in Verbindung mit der E-Modul

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34

Kasvayee, Keivan Amiri. "Microstructure and deformation behaviour of ductile iron under tensile loading." Licentiate thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH. Forskningsmiljö Material och tillverkning – Gjutning, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-28335.

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The current thesis focuses on the deformation behaviour and strain distribution in the microstructure of ductile iron during tensile loading. Utilizing Digital Image Correlation (DIC) and in-situ tensile test under optical microscope, a method was developed to measure high resolution strain in microstructural constitutes. In this method, a pit etching procedure was applied to generate a random speckle pattern for DIC measurement. The method was validated by benchmarking the measured properties with the material’s standard properties. Using DIC, strain maps in the microstructure of the ductile

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35

Wang, Wenbo. "Failure Analysis of High Nickel Alloy Steel Seal Ring Used in Turbomachinery." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6635.

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The system of upper high nickel alloying steel seal ring and lower high nickel alloying steel seal ring, installed in the grooves of turbine, can extend out and fit with the wall of valve cage, resulting in forming a good seal under the pressure. In the project, the failure steel seal ring is considered. This situation had threatened the safety of the whole steam turbine system. The purpose of this study is to identify the failure cause of the steel seal ring used in nuclear steam turbines. New high nickel steel alloy seal ring was compared with the failed seal ring. The dimensions of macrosco

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Nguyen, Tom P. "MITIGATING MOISTURE SUSCEPTIBILITY IN HOT-MIX ASPHALT CONCRETE." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/467.

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Moisture damage in asphalt pavement has always been a problem for drivers, bicyclists, and pedestrians. The primary objective of this study is to evaluate moisture susceptibility of Hot-Mix Asphalt (HMA) and to investigate mitigation techniques using different antistripping agents. Three types of antistripping agents were used in this research investigation. Two of which are chemical based and the other is hydrated lime. The two types of liquid antistripping agents used in this study include Arr Maz CC LOF-6500 and Arr Maz CC XL-9000. These two liquid antistripping agents were tested at 0.25%,

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37

Kratochvíl, Tomáš. "3D FDM tiskárna reprap a parametry tisku." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232069.

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This master thesis summarizes the current knowledge about non-commercial 3D printing FDM technology. The goal of this thesis is to demonstrate the gained knowledge by building a 3D printer which can partially replicate itself, and to evaluate its technological parameters. The experimental part of this work is focused on the impact of the changes in technological parameters of printing on mechanical properties of printed parts.

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38

Bertolla, Luca. "Mechanical Reinforcement of Bioglass®-Based Scaffolds." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-234586.

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Bioactive glasses exhibit unique characteristics as a material for bone tissue engineering. Unfortunately, their extensive application for the repair of load-bearing bone defects is still limited by low mechanical strength and fracture toughness. The main aim of this work was two-fold: the reinforcement of brittle Bioglass®-based porous scaffolds and the production of bulk Bioglass® samples exhibiting enhanced mechanical properties. For the first task, scaffolds were coated by composite coating constituted by polyvinyl alcohol (PVA) and microfibrillated cellulose (MFC). The addition of PVA/MFC

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39

Valavala, Pavan Kumar. "Uniaxial Tensile and Creep Behavior of Omnisil Membranes in Membrane Based Wet Electrostatic Precipitator." Ohio University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1129144907.

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40

Dinh, Quoc Dan. "Brazilian test on anisotropic rocks." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2011. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-76331.

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The present work describes investigations on the anisotropic strength behavior of rocks in the splitting tensile test (Brazilian test). Three transversely isotropic rocks (gneiss, slate and sandstone) were studied in the Lab. A total of more than 550 indirect tensile strength tests were conducted, with emphasis was placed on the investigation of the influence of the spatial position of anisotropic weakness plane to the direction of the load on the fracture strength and fracture or fracture mode. In parallel, analytical solutions were evaluated for stress distribution and developed 3D numerical

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41

Kostková, Jana. "Porovnání vlastností dvou výrobků pro umělá kluziště na bázi kaučuku etylén-propylen-dien." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-217150.

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This master thesis deals with characterization of two black and white products based on ethylene-propylene-diene rubber (EPDM) used for skating rink. Products marked with A and are different in their diameter of circular tubes trough which cooling medium passes and also in the distance of these tubes. Both of materials were characterized in order to determine whether it is the EPDM and how are they different. The characterization methods were used: differential scanning calorimetry, thermogravimetric analysis, attenuated total reflectance Fourier transform infrared spectroscopy, tensile test,

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42

Arshad, Mubeen. "Damage tolerance of 3D woven composites with weft binders." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/damage-tolerance-of-3d-woven-composites-with-weft-binders(2b1435bc-fdb7-47c3-b555-ca5ea2883b4b).html.

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3D woven composites, due to the presence of through-thickness fibre bridging, have the potential to improve damage tolerance and at the same time to reduce the manufacturing costs. However, the ability to withstand damage depends on weave architecture as well as the geometry of individual tows. A substantial amount of research has been performed to understand in-plane properties as well as the performance of 3D woven composites exposed to impact loads, but there is limited research on the damage tolerance and notch sensitivity of 3D weaves and no work is reported on the damage tolerance of 3D

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Čermáková, Klára. "Úprava závěsu bočních dveří osobního automobilu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254288.

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This thesis introduces issues of passenger car side-door hinges. Practical part of this thesis deals with modifying the current low-cost side-door hinge for Edscha Automotive Kamenice s.r.o. First, material was chosen to decrease weight while maintaining the required mechanical properties. Then follows the detail design of the hinge model, which was created in the software program Catia. Heat and surface treatments are described. Both treatments ensures the hinge's final features. To verify the strength of the hinge, tensile and sag test was simulated in Ansys. Subsequently, record from the co

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Morrone, Angela. "Development and characterization of a new welding process for Al and Cu layers for Lithium ion battery manufacturing." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22666/.

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The goal of this thesis project is to characterize and develop a new welding process for two Al and two Cu layers applicated to lithium ion battery manufacturing. To reach this scope two different technology have been tested: a punch system (which has been included in an automated trimmer machine) and a burin system (whose tip has been inserted in a milling machine). Different material thicknesses have been used; for Al: 17 µm, 23 µm, 106 µm and 154 µm and for Cu: 11 µm. Two types of tensile tests, pull-off and peel-off, have been used to evaluate the goodness of the weldings, since there i

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Shahid, Sharlin, and Widaad Gukhool. "Experimental Testing and MaterialModeling of Anisotropy in InjectionMoulded Polymer Materials." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-19720.

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Experimental characterization of the mechanical properties in a thin injection moulded Low-Density Polyethylene (LDPE) plate is per- formed in this work. Anisotropy in LDPE at different material orientations is measured from the Digital Image Correlation (DIC) observation of the specimens during uniaxial tensile test. From the test response and observation from DIC, the studied material is found to be significantly anisotropic. Finite Element simulation (FE-simulation) of in-plane anisotropy of material is carried in AbaqusTM R2020 using available models like Hill48 and Barlat2004. When necess

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Kömi, J. (Jukka). "Hot ductility of austenitic and duplex stainless steels under hot rolling conditions." Doctoral thesis, University of Oulu, 2001. http://urn.fi/urn:isbn:9514265602.

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Abstract The effects of restoration and certain elements, nitrogen, sulphur, calcium and Misch metal, on the hot ductility of austenitic, high-alloyed austenitic and duplex stainless steels have been investigated by means of hot rolling, hot tensile, hot bending and stress relaxation tests. The results of these different testing methods indicated that hot rolling experiments using stepped specimens is the most effective way to investigate the relationship between the softening and cracking phenomena under hot rolling conditions. For as-cast, high-alloyed and duplex stainless steels wit

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Othman, Alias B. "A novel tensile stress relaxation test : development and applications to a study of non-rubber constituents and fillers in natural rubber." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/26873.

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A novel tensile stress relaxation test has been developed. It measures the residual stress in slender specimens mounted on a simple test frame by creating a small bowstring-like movement and measuring the force required to do so. Unlike the commoner compression tests, it permits a high ratio of exposed surface to volume to be maintained in the specimens, facilitating study of environmental effects. It also avoids suppression of any effects where progress of surface cracking might play an important part. The accuracy of the test is estimated at ±5% and, unlike simple tensile tests, would suffer

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Andersson, Viktor, and Andreas Larsson. "Project ABSS : Adhesive bonding of stainless steels." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-13707.

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This report aims to increase the scientific knowledge about long-term prospects for the adhesive and adhesive joints for bonding of stainless steels. The effects of water, temperature and chemicals on the adhesive and adhesive joints are investigated. Stainless steel plates are pretreated with a primer and isopropanol, there after joined together with single lap modeling. The strength of the joint is tested with a tensile test and additionally a watertightness test is performed to determine if the joints are watertight. For this project three versions of stainless steels is used and two differ

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Černý, Martin. "Stanovení mechanických vlastností materiálů používaných pro 3D tisk." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402542.

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The thesis deals with the determination of mechanical properties of materials used for 3D printing (ABS, nylon and PLA). Standardized samples produced using a 3D printer using the Fused Deposition Modeling method were subsequently used for mechanical testing. The work is also extended to determine the mechanical properties of samples made by Soft Tooling. For the production of Soft Tooling samples, polyurethane resins SG 2000 and SG 145 were used. Individual materials were analyzed by mechanical tests (tensile test and hardness test). Surface integrity parameters have also been determined for

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NYSTRÖM, ANNA-KARIN, and JOSEFINE OLSSON. "Changing to polyester in airbags : A study of two test methods used for polyester fabric analyse." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17364.

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This thesis is part of an on going project within Autoliv Sweden AB to develop the process in changing the material in airbags. Most airbags are today constructed of fabric in polyamide 6.6 (PA6.6) and the thesis view the possibility of changing the material to one of three different polyesters (PET1, PET2, PET3). Both materials have different properties that have been looked into by two test methods, linear testing and dynamic testing with cold gas. The two testing methods were conducted on plain fabric and on fabric with seam to see differences in the materials when subjected to different st

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