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Dissertations / Theses on the topic 'Compression stress and strain'

Author: Grafiati
Published: 7 June 2025
Last updated: 2 August 2025

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1

Forrester, Hsuan-Hsiou. "High strain rate compression testing of polymers : PTFE, PCTFE, PVC and PMMA." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13624.

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The mechanically compressive flow stress sensitivities of various polymers are investigated at high strain rates above 103 s-1. Temperatures near the glass transition temperature are investigated and the polymer stress-strain responses have been studied from ambient temperature to 100°C. Previous work has reported peaks in flow stress as a function of strain rate [Al-Maliky/Parry 1994, Al-Maliky 1997]. The analyses showed rapid increases of flow stress followed by a sudden drop at elevated strain rates, which is unlike the well known linear relationship documented at the low strain rates. The
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2

Vogtmann, Dana E. "Stress relaxation in poly(methyl methacrylate) (PMMA) during large-strain compression testing near the glass transition temperature." Connect to resource, 2009. http://hdl.handle.net/1811/36980.

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3

Katzenberger, Jr Michael J. "Effects of Sex, Strain Rate, and Age on the Tensile and Compressive Material Properties of Human Rib Cortical Bone." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/102889.

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The objective of this study was to evaluate the effects of sex, loading rate, and age on the tensile and compressive material properties of human rib cortical bone over a wide range of subject demographics. Tension coupons were tested from sixty-one (n = 61) subjects (M = 32, F = 29) ranging in age from 17 to 99 years of age (Avg. = 56.4 +/- 26.2 yrs.). Compression samples were tested from thirty (n = 30) subjects (M = 19, F = 11) ranging in age from 18 to 95 years of age (Avg. = 49.0 +/- 23.9 yrs.). For each subject, one coupon/sample was tested to failure on a material testing system at a ta
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4

Rainone, Corrado. "Following the evolution of metastable glassy states under external perturbations : compression and shear-strain." Thesis, Paris, Ecole normale supérieure, 2015. http://www.theses.fr/2015ENSU0051/document.

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On considère l'évolution adiabatique des états vitreux sous perturbations extérieures. Bien que le formalisme que nous utilisons soit très général, nous nous concentrons ici sur les sphères dures en dimension infinie où une analyse exacte est possible. Nous considérons perturbations de la frontière, notamment compression ou cisaillement simple et nous calculons la réponse des états vitreux à ces perturbations : pression et contrainte de cisaillement. Nous constatons un dépassement des deux quantités avant que l'état vitreux ne devienne instable à un point spinodal, où il fond dans le liquide (
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5

Gonzales, Manny. "The mechanochemistry in heterogeneous reactive powder mixtures under high-strain-rate loading and shock compression." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54393.

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This work presents a systematic study of the mechanochemical processes leading to chemical reactions occurring due to effects of high-strain-rate deformation associated with uniaxial strain and uniaxial stress impact loading in highly heterogeneous metal powder-based reactive materials, specifically compacted mixtures of Ti/Al/B powders. This system was selected because of the large exothermic heat of reaction in the Ti+2B reaction, which can support the subsequent Al-combustion reaction. The unique deformation state achievable by such high-pressure loading methods can drive chemical reactions
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6

Djukic, Stéphanie. "Damage mechanisms under tensile stress of amorphous and low semi-crystalline polymers." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSE1041.

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Ces dernières années, une nouvelle classe de polyamides a été développée pour des applications spécifiques nécessitant de meilleures propriétés mécaniques et thermiques, telles que l’électronique ou l’industrie automobile. Les polyphtalamides (PPA) sont des polyamides semi-aromatiques, contenant des cycles aromatiques dans leur chaine principale. Récemment, les mécanismes d’endommagement ont été étudiés dans le cas de polymères semi-cristallins (PA66) et amorphes (acétate de cellulose). Le but de la thèse a été d’étudié les mécanismes d’endommagement de polymères amorphes et semi-cristallins.
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7

Brouillette, Marc James. "Static compressive stress induces mitochondrial oxidant production in articular cartilage." Thesis, University of Iowa, 2012. https://ir.uiowa.edu/etd/2445.

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While mechanical loading is essential for articular cartilage homeostasis, it also plays a central role in the etiology of osteoarthritis. The mechanotransduction events underlying these dual effects, however, remain unclear. Previously, we have shown that lethal amounts of reactive oxygen species (ROS) were liberated from mitochondrial complex 1 in response to a mechanical insult. The sensitivity of this response to an actin polymerase inhibitor, cytochalasin B, indicated a link between ROS release and cytoskeletal distortion caused by excessive compressive strain. It did not, however, rule o
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8

Tawana, Siyd S. "Behavior of plain and steel fiber reinforced concrete under multiaxial stress." Ohio : Ohio University, 1995. http://www.ohiolink.edu/etd/view.cgi?ohiou1178903105.

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9

Leung, Janet (Janet H. ). "Effect of volume fraction of solids on the compressive stress-strain behavior of collagen-glycosaminoglycan scaffolds." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/35062.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2006.<br>Includes bibliographical references (leaf 35).<br>This thesis aims to examine the effect of volume fraction of solids in collagen-glycosaminoglycan (GAG) scaffolds on the compressive-strain behavior of the structure and compare these results to the open-cell foam model. Collagen-GAG (CG) scaffolds have been used for regenerating skin, conjunctiva, and peripheral nerves with varying levels of success. In these uses, the temporary scaffolds are often deployed with a non-degradable support s
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10

Ranawaka, Thanuja. "Distortional buckling behaviour of cold-formed steel compression members at elevated temperatures." Thesis, Queensland University of Technology, 2006. https://eprints.qut.edu.au/16417/6/Thanuja_Ranawaka_Thesis.pdf.

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In recent times, light gauge cold-formed steel sections have been used extensively in residential, industrial and commercial buildings as primary load bearing structural components. This is because cold-formed steel sections have a very high strength to weight ratio compared with thicker hot-rolled steel sections, and their manufacturing process is simple and cost-effective. However, these members are susceptible to various buckling modes including local and distortional buckling and their ultimate strength behaviour is governed by these buckling modes. Fire safety design of building st
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11

Ranawaka, Thanuja. "Distortional buckling behaviour of cold-formed steel compression members at elevated temperatures." Queensland University of Technology, 2006. http://eprints.qut.edu.au/16417/.

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In recent times, light gauge cold-formed steel sections have been used extensively in residential, industrial and commercial buildings as primary load bearing structural components. This is because cold-formed steel sections have a very high strength to weight ratio compared with thicker hot-rolled steel sections, and their manufacturing process is simple and cost-effective. However, these members are susceptible to various buckling modes including local and distortional buckling and their ultimate strength behaviour is governed by these buckling modes. Fire safety design of building st
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12

Heva, Yasintha Bandula. "Behaviour and design of cold-formed steel compression members at elevated termperatures." Queensland University of Technology, 2009. http://eprints.qut.edu.au/29310/.

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Cold-formed steel members have been widely used in residential, industrial and commercial buildings as primary load bearing structural elements and non-load bearing structural elements (partitions) due to their advantages such as higher strength to weight ratio over the other structural materials such as hot-rolled steel, timber and concrete. Cold-formed steel members are often made from thin steel sheets and hence they are more susceptible to various buckling modes. Generally short columns are susceptible to local or distortional buckling while long columns to flexural or flexural-torsional b
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Heva, Yasintha Bandula. "Behaviour and design of cold-formed steel compression members at elevated temperatures." Thesis, Queensland University of Technology, 2009. https://eprints.qut.edu.au/29310/1/Yasintha_Heva_Thesis.pdf.

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Cold-formed steel members have been widely used in residential, industrial and commercial buildings as primary load bearing structural elements and non-load bearing structural elements (partitions) due to their advantages such as higher strength to weight ratio over the other structural materials such as hot-rolled steel, timber and concrete. Cold-formed steel members are often made from thin steel sheets and hence they are more susceptible to various buckling modes. Generally short columns are susceptible to local or distortional buckling while long columns to flexural or flexural-torsional b
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14

Juste, Andrea Elizabeth. "Estudo da resistência e da deformabilidade da alvenaria de blocos de concreto submetida a esforços de compressão." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-26052006-151504/.

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O estudo da resistência à compressão e da deformabilidade de paredes de alvenaria de blocos de concreto é de fundamental importância para a caracterização desse material e o desenvolvimento de análises de estruturas compostas por esse tipo de painel. Este trabalho trata desse tema, objetivando prever com maior acuidade os principais parâmetros de deformação e de resistência de paredes de alvenaria de blocos de concreto, a saber: resistência à compressão e módulo de elasticidade longitudinal nas direções paralela e perpendicular à junta de assentamento. Foi desenvolvido um trabalho experimental
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15

Lee, Jung Hoon. "Local buckling behaviour and design of cold-formed steel compression members at elevated temperatures." Thesis, Queensland University of Technology, 2004. https://eprints.qut.edu.au/15972/1/Jung_Hoon_Lee_Thesis.pdf.

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The importance of fire safety design has been realised due to the ever increasing loss of properties and lives caused by structural failures during fires. In recognition of the importance of fire safety design, extensive research has been undertaken in the field of fire safety of buildings and structures especially over the last couple of decades. In the same period, the development of fire safety engineering principles has brought significant reduction to the cost of fire protection. However the past fire research on steel structures has been limited to heavier, hot-rolled structural steel me
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16

Lee, Jung Hoon. "Local buckling behaviour and design of cold-formed steel compression members at elevated temperatures." Queensland University of Technology, 2004. http://eprints.qut.edu.au/15972/.

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The importance of fire safety design has been realised due to the ever increasing loss of properties and lives caused by structural failures during fires. In recognition of the importance of fire safety design, extensive research has been undertaken in the field of fire safety of buildings and structures especially over the last couple of decades. In the same period, the development of fire safety engineering principles has brought significant reduction to the cost of fire protection. However the past fire research on steel structures has been limited to heavier, hot-rolled structural steel me
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17

Petráčková, Klára. "Stanovení modulu pružnosti v tahu tenké vrstvy - numerická analýza zkoušky mikrokompresního vzorku a "bulge testu"." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230777.

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Determination of mechanical properties of very thin films is rather difficult task as all of currently using testing techniques have some weakness. This master’s thesis deals with microcompressive test and bulge test. Finite element simulations of the two methods were carried out in order to better understanding of experimental record. Microcompression combines the sample preparation with the use of focused ion beam (FIB) with a compression test carried out using nanoindenter. Cylindrical specimens (pillars) were prepared from Al film deposited on Si substrate using FIB. Experimentally measure
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18

Contini, Manuel. "Effetti dei parametri geometrici nella compressione di strutture “lattice”." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14713/.

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L’obiettivo di questo elaborato è creare e raccogliere una serie di dati e conoscenze relative alle strutture lattice, tramite un lavoro di ricerca su testi affini alla materia e online su siti specializzati, al fine di offrire un documento riassuntivo di tutti i punti focali indispensabili nello studio di simulazioni numeriche a compressione di strutture lattice. Altra parte del lavoro consiste nel creare, attraverso le esperienze acquisite man mano, una serie di passaggi, analizzati singolarmente in un software commerciale agli elementi finiti, da effettuare per importare progetti, inserire
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19

Khusru, Shovona. "High performance hybrid structural column with rubberised concrete under axial compressive loading." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/233665/1/Shovona_Khusru_Thesis.pdf.

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Every year millions of tyres are disposed of worldwide in landfill resulting in the rise of an environmental burden. This thesis demonstrates the development of a sustainable novel hybrid double skin tubular column utilizing the scrap tyre rubbers. The proposed column made with rubberised concrete infill, filament wound FRP outer tube and steel inner tube, has been studied extensively through experimental testing, finite element modelling and parametric studies, to understand the structural performance under axial loading. This column, compared to the traditional column will be sustainable and
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20

Lukich, Svetlana. "VIBRATIONAL AND MECHANICAL PROPERTIES OF 10 MOL % SC2O3-1 MOL % CEO2- ZRO2 ELECTROLYTE CERAMICS FOR SOLID OXIDE FUEL CELLS." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4001.

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Solid Oxide Fuel Cells (SOFCs) are emerging as a potential breakthrough energy conversion technology for clean and efficient production of electricity and heat from hydrogen and hydro-carbon fuels. Sc₀.₁Ce₀.₀₁ZrO₂ electrolytes for Solid Oxide Fuel Cells are very promising materials because their high ionic conductivity in the intermediate temperature range 700°C-800°C. The vibration response of cubic and rhombohedral ([beta]) 10 mol%Sc₂O₃ - 1 mol%CeO₂ - ZrO₂ (Sc₀.₁Ce₀.₀₁ZrO₂) both at room and high-temperatures is reported. The in-situ heating experiments and ex-situ indentation experiments wer
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21

高山, 昇三, Shozo TAKAYAMA, 正人 吉田, Masato YOSHIDA, 剛. 奥山 та Takashi OKUYAMA. "未成熟材における圧縮成長応力発生へのミクロフィブリル傾角の寄与". 名古屋大学農学部付属演習林, 2001. http://hdl.handle.net/2237/8515.

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22

Masson, Isabelle. "Détermination des propriétés mécaniques en fluage a haute température et étude des microstructures de déformation de céramiques a base de nitrure d'aluminium." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL136N.

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En vue d'applications en sidérurgie dans les nouveaux procédés de coulée continue de bandes minces, plusieurs céramiques à base de nitrure d'aluminium (AlN fritte (SAlN), AlN presse a chaud (HPAlN) et composites al#2o#3-AlN) ont été déformées en compression uniaxiale soit sous contrainte constante (150-250 MPa) soit à vitesse de déformation imposée (5. 10##6s##1) à des températures variant de 1200 à 1650c puis caractérisées en microscopie électronique à balayage, en microscopie électronique à transmission et par analyse EDX. En fluage a charge constante, la vitesse de déformation est proportio
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23

Llorens, Sulivera Joan. "Experimental study of simple and multi-leaf masonry slender elements under compressive stress loaded parallel to the face." Doctoral thesis, Universitat de Girona, 2020. http://hdl.handle.net/10803/671027.

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The thin-tile vault is a structural system widely used in the Mediterranean area. The most spectacular development took place through modernist-style buildings designed by architects such as Antonio Gaudí o Luís Domènech and Muntaner among the others. Thin-tile vault, from a morphological standpoint, is made up of one or more leaf of thin-tile lay flat, and joined with plaster or mortar. As a particularity of this arrangement, the load is applied parallel to the face of the thin-tile as opposed to the load-bearing walls masonry, where the load is applied perpendicularly to it. Deepening the
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24

Cheneau-Späth, Nadine. "Comportement de monocristaux et de polycristaux de métaux hexagonaux en grandes déformations plastiques : compression plane du titane et du magnésium." Grenoble INPG, 1996. http://www.theses.fr/1996INPG4201.

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La modélisation de l'évolution des textures de déformation des métaux hexagonaux, tels que le titane et le magnésium, et de l'anisotropie plastique des tôles manufacturées nécessitent la connaissance de leur comportement plastique lors des opérations classiques de mise en forme. Pour ce faire, nous caractérisons expérimentalement les mécanismes de déformation mis en jeu au cours de l'essai de compression plane sur plusieurs orientations de monocristaux de titane déformés à l'ambiante et de magnésium déformés à l'ambiante et à 400°C, en conditions de glissement et de maclage multiple, que nous
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Kuchař, Martin. "Stanovení modulu pružnosti zdiva ve směru ložné spáry." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2015. http://www.nusl.cz/ntk/nusl-227159.

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The determination of strain properties of masonry in the direction parallel to bed joints is a fundamental pre-requisite for designing structures, where masonry is subjected to horizontal stresses (e. g. strengthening with prestressing). The diploma thesis summarized techniques of determination of masonry modulus of elasticity presented in available literature. The goal is to suggest suitable methodology of determination of masonry modulus in direction parallel to the bed joints. In the practical part of the diploma thesis is that methodology verified by experimental test and results of tests
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26

ZHOU, XIAO-WEI. "Contribution au comportement dynamique des materiaux metalliques : etude experimentale de l'alliage al-li en torsion et en compression, simulation numerique du processus de penetration a grande vitesse." Nantes, 1988. http://www.theses.fr/1988NANT2014.

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Etude experimentale sur les alliages al-li soumis a des essais de traction et de compression pour des vitesses de deformation comprises entre 10**(-4) et 310**(3) s**(-1) et de 10**(-3) a 210**(3) s**(-1) respectivement. Auparavant ces alliages ont ete traites thermiquement. Analyse de la sensibilite a la vitesse de deformation. Influence du mecanisme d'activation thermique sur le processus de deformation. Determination du mode de rupture. Analyse des facies de rupture pour les echantillons deformes en traction et de la formation des cellules de dislocation dans ceux deformes en compression. S
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Trausch-Giudici, Jolanda Luisa. "Stress-strain characterisation of seebodenlehm /." Zürich : IGT, Division of Geotechnical Engineering : vdf, Hochschulverlag AG an der ETH Zürich, 2004. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=3728130036.

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28

Gough, Julia. "Stress-strain behaviour of rubber." Thesis, Queen Mary, University of London, 2000. http://qmro.qmul.ac.uk/xmlui/handle/123456789/28819.

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Several aspects of the stress-strain behaviour of rubber, important for evaluating its properties for finite element analysis and engineering applications, are investigated. Measurements of the deformation behaviour of an elastomer containing a compressible filler are used to assess theoretical equations for the compression modulus of rubber pads bonded to rigid endplates. The volume fraction of filler is estimated from a simple model. The first cycle stress-strain behaviour of filled and unfilled rubbers is characterised from uniaxial tests and by measuring both non-zero principal stresses wi
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Lopes, Francisco Mateus Gomes. "Estudo do comportamento mec?nico de areias artificialmente cimentadas." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/14840.

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Made available in DSpace on 2014-12-17T14:48:13Z (GMT). No. of bitstreams: 1 FranciscoMGL_DISSERT.pdf: 2920200 bytes, checksum: c9c74c01a86db791fd1fef40b8b653c2 (MD5) Previous issue date: 2012-03-09<br>Soil improved with the addition of cement have been utilized as an alternative to the construction of various types of geotechnical works, almost always present economic and environmental advantages. This paper presents a study on the usage of cement in the improvement of mechanical properties of sandy soils, characteristic of the region of Natal, collected from its dunes. This research was ma
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Mata, Martha Patricia Guerrero. "Finite element modelling of hot plane strain compression testing." Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245644.

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31

Stander, Melchior. "Development of an intermediate strain rate compression testing machine." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9131.

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Includes bibliographical references.<br>The further development of the wedge bar Intermediate Strain rate Tester (IST) presented by Cloete and Oxtoby [1] is presented in this dissertation. The concept uses a wedge mechanism to deform 5 mm diameter, 5 mm long specimens at strain rates in the region of 10 s, up to strains of 30. As impact principles are used to start and stop the experiment, it takes less than 1 of the testing duration to reach testing speed and to stop the experiment. The kinetic energy stored in the wedge bar helps ensure a near constant loading rate over the duration of the e
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Navathe, Prabhaker Rao. "Evaluation of local stress-strain methods." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ30527.pdf.

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Howell, D. "Quantifying stress and strain in diamond." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/17938/.

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Birefringence in diamond is an anomalous optical property for a nominally isotropic material. The occurrence of birefringence in diamond is a result of the photoelastic effect; the change of refractive index caused by stress (Nye, 1957). With the development of the MetriPol system (Glazer et al., 1996), a new technique is now available that allows rapid and accurate measurement of birefringence. Detailed knowledge of the photoelastic effect in diamond is vital to be able to use this new quantitative birefringence analysis with confidence. Initial investigation of the current literature on the
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Polzer, Stanislav. "Stress-Strain Analysis of Aortic Aneurysms." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-234135.

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Tato práce se zabývá problematikou aneurysmat břišní aorty a možností využít konečnoprvkovou deformačně-napěťovou analýzu těchto aneurysmat ke stanovení rizika ruptury. První část práce je věnována úvodu do problematiky, popisu kardiovaskulární soustavy člověka s důrazem na abdominální aortu, anatomii, fyziologii a patologii stěny tepny s důrazem na procesy vedoucí ke vzniku aneurysmatu. Dále se práce věnuje rizikovým faktorům přispívajících ke vzniku aneurysmat spolu s analýzou současných klinických postupů ke stanovení rizika ruptury spolu se srovnáním navrhovaného kritéria maximálního napět
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Molapo, Katiso Tokoloho. "The behaviour of strain-hardening cement composites under biaxial compression." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/5242.

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Thesis (MScEng (Civil Engineering))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: Reinforced concrete is susceptible to cracking. This makes it less durable than it would be had it been crack-free. Ingress of harmful substances into reinforced concrete through cracks – which causes corrosion of steel – is not desirable. This can be mitigated by the use of fibre reinforced-concretes or mortars showing strain hardening properties accompanied by improved ductility and multiple cracking under tensile loading. Such materials are called Strainhardening cementitious composites (SHCC’s
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Tsukamoto, Mikio Boonyong Keiwkarnka. "Job strain among physicians in Bangkok, Thailand /." Abstract, 2005. http://mulinet3.li.mahidol.ac.th/thesis/2548/cd375/4737950.pdf.

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McGinty, Kevin. "The stress-strain behaviour of Bothkennar clay." Thesis, University of Glasgow, 2006. http://theses.gla.ac.uk/2608/.

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This thesis describes the findings of an experimental and numerical investigation into the mechanical behaviour of a soft clay. Chapter 1 outlines the need for continued research on soft clay behaviour. The aims and objectives of the work are set out, as well as the structure of the research. The mechanical behaviour of soft clays has been reported by a large number of researchers and the findings of thee are considered in Chapter 2. A review of Bothkennar clay is given. Chapter 3 sets out the details of two constitutive models, whose purpose is to model the efforts of plastic anisotropy and d
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Millar, Michael James. "The stress-strain behaviour of jointed chalk." Thesis, University of Brighton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324397.

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Bloomer, S. T. "Stress-strain behaviour of soils containing electrolytes." Thesis, University of Sunderland, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381589.

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Zhao, Kunmin. "Cyclic stress-strain curve and springback simulation /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488192447428529.

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41

Sasitharan, Sabanayagam. "Stress path dependency of dilatancy and stress-strain response of sand." Thesis, University of British Columbia, 1989. http://hdl.handle.net/2429/27998.

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The drained loading behaviour of water pluviated Erksak sand is investigated in the triaxial apparatus by varying consolidation history, stress path and loading direction (compression or extension). It is shown that, under identical minor effective principal stress, anisotropically consolidated sand has a higher tangent modulus than the isotropically consolidated sand in the initial stages of the shearing phase. This difference in the tangent modulus reduces as the sand approaches failure. The modified hyperbolic model, in which the increment in the deviator stress after consolidation is cons
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42

YANG, Demao. "Compression Stability of High Strength Steel Sections with Low Strain-Hardening." University of Sydney. School of Civil Engineering, 2003. http://hdl.handle.net/2123/561.

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Thin-walled steel sections made from high strength thin cold-reduced G550 steel to Australian Standard AS 1397-1993 under compression are investigated experimentally and theoretically in this thesis. This thesis describes three series of compression tests performed on box-section stub columns, box-section long columns and lipped channel section columns cold-formed from high strength steel plates in 0.42 mm or 0.60 mm thickness with nominal yield stress of 550 MPa. The tests presented in this thesis formed part of an Australian Research Council research project entitled: Compression Stabili
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Bhattacharya, Rahul. "Hot deformation studies on magnesium AZ31 alloy using plane strain compression." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531126.

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44

Yu, Hao. "Modeling of High Strain Rate Compression of Austenitic Shape Memory Alloys." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1062835/.

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Shape memory alloys (SMAs) exhibit the ability to absorb large dynamic loads and, therefore, are excellent candidates for structural components where impact loading is expected. Compared to the large amount of research on the shape memory effect and/or pseudoelasticity of polycrystalline SMAs under quasi-static loading conditions, studies on dynamic loading are limited. Experimental research shows an apparent difference between the quasi-static and high strain rate deformation of SMAs. Research reveals that the martensitic phase transformation is strain rate sensitive. The mechanism for the ma
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45

Falola, Adekunle Samuel. "MECHANICAL CHARACTERIZATION – MONOTONIC MICRO-TENSILE, STRESS RELAXATION, AND STRAIN-CONTROLLED CYCLIC STRESS-STRAIN RESPONSES OF SINGLE ELECTROSPUN PVDF NANOFIBERS." University of Akron / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=akron1564557199987647.

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46

Magoda, Cletus Mathew. "High strain-rate compressive strain of welded 300W asteel joints." Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/1248.

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A Thesis Submitted Towards the Partial Fulfilment Degree of Master of Technology (M.Tech.) FACULTY OF ENGINEERING MECHANICAL ENGINEERING DEPARTMENT Cape Peninsula University of Technology 2011<br>The split Hopkinson pressure bar (SHPB) test is the most commonly used method for determining material properties at high rates of strain. The theory governing the specifics of Hopkinson bar testing has been around for decades; however, it has only been for the last decade or so that significant data processing advancements have been made. It is the intent of this thesis to offer the insight of applic
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Dumanowski, Bruno. "Simulation de traitements thermomécaniques de l'alliage de titane Ti-6%Al-4%V dans le domaine biphasé (alpha+beta)." Grenoble INPG, 1997. http://www.theses.fr/1997INPG4204.

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Les liens qui unissent les proprietes mecaniques de l'alliage de titane ti-6al-4v a son etat microstructural sont etroits. Ce sont les operations de mise en forme a chaud qui conferent a cet alliage sa microstructure. L'apparition des structures de produits forges industriellement est etudiee par le truchement de l'essai de compression axisymetrique a chaud. Afin de disposer de taux de deformation precis au sein des echantillons deformes, une analyse mecanique de l'essai de compression uniaxiale est tout d'abord effectuee. Il s'agit d'un modele utilisant le theoreme de la borne superieure. Il
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48

Siradj, Eddy Sumarno. "Strain induced precipitation kinetics of Nb(Cn) in Nb-HSLA steel as a function of thermomechanical history." Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.264438.

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Huang, Jun Fei. "Stress-strain models for light-gauge carbon steels." Thesis, University of Macau, 2012. http://umaclib3.umac.mo/record=b2586269.

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Bevan, Anthony John William. "Occupational stress and strain in South Australian dentists /." Title page, contents and abstract only, 1999. http://web4.library.adelaide.edu.au/theses/09SPS/09spsb571.pdf.

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