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Rozprawy doktorskie na temat „Compression and Indentation testing”

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Data publikacji: 6 września 2023

Data aktualizacji: 31 lipca 2025

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1

Shirmohammadi, Maryam. "Process modelling and simulation of tissue damage during mechanical peeling of pumpkin as a tough skinned vegetable." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/67921/1/Maryam_Shirmohammadi_Thesis.pdf.

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Food waste is a current challenge that both developing and developed countries face. This project applied a novel combination of available methods in Mechanical, agricultural and food engineering to address these challenges. A systematic approach was devised to investigate possibilities of reducing food waste and increasing the efficiency of industry by applying engineering concepts and theories including experimental, mathematical and computational modelling methods. This study highlights the impact of comprehensive understanding of agricultural and food material response to the mechanical op

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2

Pour, Shahid Saeed Abadi Parisa. "Mechanical behavior of carbon nanotube forests under compressive loading." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47699.

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Carbon nanotube (CNT) forests are an important class of nanomaterials with many potential applications due to their unique properties such as mechanical compliance, thermal and electrical conductance, etc. Their deformation and failure in compression loading is critical in any application involving contact because the deformation changes the nature of the contact and thus impacts the transfer of load, heat, and charge carriers across the interface. The micro- and nano-structure of the CNT forest can vary along their height and from sample to sample due to different growth parameters. The morph

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3

Xia, Yang. "A robust statistical method for determining material properties and indentation size effect using instrumented indentation testing." Thesis, Compiègne, 2014. http://www.theses.fr/2014COMP1982/document.

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L'indentation instrumentée est un outil pratique et puissant pour sonder les propriétés mécaniques des matériaux à petite échelle. Cependant, plusieurs erreurs (rugosité de surface, effet de taille d’indentation, la détermination de premier point de contact, etc.) affectent l'essai d’indentation instrumentée (e.g. non reproductibilité de la courbe d’indentation) et conduisent à des imprécisions dans la détermination des propriétés mécaniques des matériaux analysés. Une approche originale est développée dans cette thèse pour la caractérisation précise des propriétés mécaniques des matériaux. Ce

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4

Koray, Erge. "Numerical And Experimental Analysis Of Indentation." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12605953/index.pdf.

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Indentation tests are widely used with simultaneous measurements of indentation depth and force especially for determining material properties. In this study<br>numerical and experimental investigation of the force-indentation measurements is presented. For indentation tests on anisotropic metals, a novel indenter which is not self similar is used with three transducers to measure the displacements. It is seen that in order to have high repeatability and accuracy at the tests, workpiece and indenter parameters have crucial importance. These parameters in the indentations are analyzed by finite

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5

Dhaigude, Mayuresh Mukund. "Anvil effect in spherical indentation testing on sheet metal." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1818.

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6

Vadlakonda, Suman. "Indentation induced deformation in metallic materials." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4904/.

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Nanoindentation has brought in many features of research over the past decade. This novel technique is capable of producing insights into the small ranges of deformation. This special point has brought a lot of focus in understanding the deformation behavior under the indenter. Nickel, iron, tungsten and copper-niobium alloy system were considered for a surface deformation study. All the samples exhibited a spectrum of residual deformation. The change in behavior with indentation and the materials responses to deformation at low and high loads is addressed in this study. A study on indenter g

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7

Hong, Edwin S. "Group testing for image compression /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/6900.

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8

Wang, Yan, and 王焱. "Hertzian indentation failure of dental restorative materials." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B36528067.

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9

Tuck, Jonathan R. "Indentation characterisation for design of coated systems." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364800.

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10

Monelli, Bernardo Disma. "Mechanical Characterization of Metallic Materials by Instrumented Spherical Indentation Testing." Doctoral thesis, Università degli studi di Trento, 2010. https://hdl.handle.net/11572/368675.

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Instrumented indentation testing is now considered one of the most attractive tools for characterizing engineering materials. A large number of materials properties can be investigated. The present dissertation was aimed at developing a new methodology for inferring the material behaviour of metallic materials from their indentation response.

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11

Monelli, Bernardo Disma. "Mechanical Characterization of Metallic Materials by Instrumented Spherical Indentation Testing." Doctoral thesis, University of Trento, 2010. http://eprints-phd.biblio.unitn.it/436/1/Bernardo-Monelli_PhD.pdf.

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Instrumented indentation testing is now considered one of the most attractive tools for characterizing engineering materials. A large number of materials properties can be investigated. The present dissertation was aimed at developing a new methodology for inferring the material behaviour of metallic materials from their indentation response.

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12

Lin, Shiann. "Crack analysis by distributed strain nuclei with application to indentation testing." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339286.

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13

Poolthong, Suchit. "Determination Of The Mechanical Properties Of Enamel Dentine And Cementum By An Ultra Micro-Indentation System." Thesis, The University of Sydney, 1998. http://hdl.handle.net/2123/4963.

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14

Mahawish, Ali Hassan. "Axisymmetric compression testing of concrete by nitrogen." Thesis, Cardiff University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316326.

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15

Sjöstrand, Björn. "Evaluation of Compression Testing and Compression Failure Modes of Paperboard : Video analysis of paperboard during short-span compression and the suitability of short- and long-span compression testing of paperboard." Thesis, Karlstads universitet, Institutionen för ingenjörs- och kemivetenskaper (from 2013), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-27519.

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The objectives of the thesis were to find the mechanisms that govern compression failures in paperboard and to find the link between manufacturing process and paperboard properties. The thesis also investigates two different test methods and evaluates how suitable they are for paperboard grades. The materials are several commercial board grades and a set of hand-formed dynamic sheets that are made to mimic the construction of commercial paperboard. The method consists of mounting a stereomicroscope on a short-span compression tester and recording the compression failure on video, long-span com

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16

Totty, Jennifer L. "Linear cellular copper in bending, compression and shear." Thesis, Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/16913.

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17

Lohonka, Radek. "Plasticity of the compound semiconductors at low temperatures : modelling of the uniaxial compression and indentation tests." Toulouse, INSA, 2002. http://www.theses.fr/2002ISAT0013.

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Ce travail est une contribution à l'étude de la plasticité des semi-conducteurs composés dans le domaine basse température--forte contrainte. La compression uniaxiale est simulée à partir des formalismes de Haasen-Alexander ou de Schoeck, adaptés pour des dislocations de mobilité différente, en glissement simple ou multiple. Il est impossible de décrire la plasticité en deçà d'une température critique à l'aide des lois de vitesses de dislocations disponibles, ce qui suggère un changement de mécanisme microscopique. L'effet photoplastique négatif est également abordé. La zone plastique autour d

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18

Koka, Exaud Noe. "Laterally loaded wood compression members : finite element and reliability analysis." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26709.

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This thesis consists of two parts. The first part describes the analysis and implementation of a finite element computer model for the general prediction of failure of wood members in bending or in combined bending and axial compression. Both instability and material strength failures are included. The program is verified using available analytical and test results. A good agreement with the results predicted by this program is observed. The second part describes a procedure for the structural reliability evaluation of a compression member assuming random loads and material variables. The pro

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19

McNaughton, Adam L. "High Temperature Compression Testing of Monolithic Silicon Carbide (SiC)." Fogler Library, University of Maine, 2007. http://www.library.umaine.edu/theses/pdf/McNaughtonAL2007.pdf.

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20

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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21

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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22

Lam, Hung-yiu. "Pulse compression filter design for ultrasonic non-destructive testing /." Hong Kong : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18933580.

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23

Lin, Xin-Yu. "Lossless image compression for aerospace non-destructive testing applications." Thesis, University of Central Lancashire, 2004. http://clok.uclan.ac.uk/18830/.

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This thesis studies areas of image compression and relevant image processmg techniques with the application to Non-destructive Testing (NDT) images of aircraft components. The research project includes investigation of current data compression techniques and design of efficient compression methods for NDT images. Literature review was done initially to investigate the fundamental principles of data compression and existing methods of lossless and lossy image compression techniques. Such investigation provides not only the theoretical background, but also the comparative benchmarks for the rese

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24

Ibrahim, Nidal. "Caractérisation des propriétés mécaniques des géomatériaux par technique de micro indentation." Thesis, Lille 1, 2008. http://www.theses.fr/2008LIL10048/document.

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La technologie de micro indentation est un des moyens de caractérisation (à partir de petits échantillons) qui s'est imposé ces derniers temps dans différents domaines (pharmaceutique, génie civil, industrie pétrolière etc.). Il répond à un certain nombre d'exigences en matière de solution au problème d'échantillonnage. Cette thèse est consacrée à la caractérisation des propriétés mécanique des géomatériaux, et spécialement pour les roches pétrolières comme l'argilite, le grès, la craie ... qui ont été utilisées pour les différentes études expérimentales menées au cours de la thèse. Après avoi

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25

Lesko, John James. "Indentation testing of composite materials : a novel approach to measuring interfacial characteristics and engineering properties /." This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-03172010-020329/.

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26

Lesko, John J. "Indentation testing of composite materials: a novel approach to measuring interfacial characteristics and engineering properties." Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/41677.

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Findings made through the indentation testing of composites are presented in this thesis. The concept was developed as an attempt to evaluate the interfacial shear strength at a mesolevel, possibly overcoming the deficiencies of present techniques. Vickers Microhardness Testing and Continuous Ball Indentation Testing (CBIT) of composite materials provided data for assessing the sensitivity of indentation techniques to interfacial characteristics and engineering properties. Both methods proved capable of discerning the level of fiber-matrix adhesion. The CBIT presented the greatest potential

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27

董旭東 and Xudong Dong. "Stress distribution and failure mode of dental ceramic structures under Hertzian indentation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31241621.

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28

Czerepinski, Przemyslaw Jan. "Displaced frame difference coding for video compression." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267009.

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29

Patel, Chaitanya I. "Design and characterization of direct compression excipients." Thesis, University of Bath, 1986. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370466.

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30

Syed, Asif S. A. "Time dependent micro deformation of materials." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362108.

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31

Li, S. "Experimental testing and numerical investigation of materials with embedded systems during indentation and complex loading conditions." Thesis, Liverpool John Moores University, 2018. http://researchonline.ljmu.ac.uk/8981/.

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In this work, parametric FE (Finite Element) modelling has been developed and used to study the deformation of soft materials with different embedded systems under indentation and more complex conditions. The deformation of a soft material with an embedded stiffer layer under cylindrical flat indenter was investigated through FE modelling. A practical approach in modelling embedded system is evaluated and presented. The FE results are correlated with an analytical solution for homogenous materials and results from a mathematical approach for embedded systems in a half space. The influence of a

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32

林鴻耀 and Hung-yiu Lam. "Pulse compression filter design for ultrasonic non-destructivetesting." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B3121423X.

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33

Kassou, Belynda. "Mécanique des lits de silices granulaires pour l’optimisation des cœurs de panneaux isolants sous vide (PIV)." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI007/document.

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En Europe, le secteur du bâtiment représente près de la moitié de la consommation énergétique totale (dont 60 % pour le chauffage et la climatisation) et des rejets de CO2. Ainsi, une maîtrise de la consommation énergétique dans différents secteurs (bâtiment, transports et industrie) est nécessaire. L’utilisation de matériaux « super-isolants » thermiques tels que les panneaux isolants sous vide (PIV) dans la rénovation et dans de nouvelles constructions à très faible consommation énergétique sont prometteurs. Un PIV est composé d’un matériau de cœur thermoscellé dans une enveloppe hermétique

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34

Gardner, Kevin Alexander. "Experimental Techniques for Shear Testing of Thin Sheet Metals and Compression Testing at Intermediate Strain Rates." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366199322.

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35

Kittang, Lars Oskar Osnes. "Development and testing of a Linnik Interference Microscope for Sub-surface Inspection of Silicon during moving Indentation." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19258.

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Fixed-abrasive diamond wire sawing is a promising technique for reduction of costs related to sawing of silicon wafers for solar cells. The microscopic mechanisms of material removal in the process are however not fully understood, and must be surveyed in order for costs to be further reduced.An interference microscope for sub-surface inspection of mono-crystalline silicon has been built based on the Linnik configuration, with specific application to in-situ monitoring of moving indentations. The working principles of the instrument are explained from a literature study on relevant theory, com

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36

Mirzadeh, Farshad. "Compressive strength and behavior of 8H C3000/PMR15 woven composite material." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/54337.

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Center-notched and unnotched specimens cut from Celion 3000/PMR15 woven composite panels with 60% fiber volume fraction were tested under quasi-static compressive load to failure at room temperature. Micrographic evidence clearly identifies the mode of compressive failure as fiber kinking. Each fiber in the kink fractures because of a combination of compressive and shear stresses. A post failure mechanism follows the local fiber bundle failures, which completely deforms the material by large cracks. ln center notched specimens, fiber kinks start from the notch and propagate to some distance fr

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37

Toledo, García Gustavo A. "High temperature compression testing of hardened steels for plasticity behavior modeling." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16909.

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38

Thompson, Luke Francis. "Through-thickness compression testing and theory of carbon fibre composite materials." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/throughthickness-compression-testing-and-theory-of-carbon-fibre-composite-materials(02ad7cfa-b779-4e69-9361-3c5bb44c6114).html.

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This study investigates the through-thickness behaviour of carbon/epoxy laminates. A through-thickness compression test regime was conducted utilising three specimen designs, which are waisted, hollow cylindrical and cubic specimens. An assessment and comparison of each specimen is given regarding their advantages and disadvantages in characterising the through-thickness response of [+45/-45/90/0]s quasi-isotropic AS4/8552 carbon/epoxy laminates. A finite element (FE) study of the three specimens is presented which results in specimen geometries that provided a macroscopically uniform stress r

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39

Hongkarnjanakul, Natthawat. "Modélisation numérique pour la tolérance aux dommages d’impact sur stratifié composite : de l’impact à la résistance résiduelle en compression." Thesis, Toulouse, ISAE, 2013. http://www.theses.fr/2013ESAE0037/document.

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Les impacts sur structures composites peuvent fortement diminuer leur résistance résiduelle sans laisser de marque visible sur la surface extérieure. Dans le domaine aéronautique, un seuil minimum de détection de l’endommagement d’impact est défini, basé sur l’indentation permanente laissée par l’impact. En deçà de ce seuil, la structure doit résister à un chargement défini : c’est la notion de tolérance aux dommages d’impact. Dimensionner numériquement une structure composite en tenant compte des aspects détectabilité et tolérance aux dommages nécessite donc de savoir modéliser à la fois l’im

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40

Sylvain, Wilgens. "Étude de la plasticité du monocristal de phase MAX par déformation aux petites échelles." Thesis, Poitiers, 2016. http://www.theses.fr/2016POIT2307/document.

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L'objectif de cette thèse est l'étude de la déformation, à l'échelle microscopique, de la phase MAX Ti2AlN, synthétisée par métallurgie des poudres. Ce travail se divise en trois parties : une première dans laquelle l'accent a été mis sur l'hystérèse mécanique des phases MAX via des essais cyclés, en nanoindentation sphérique et compression ex-situ de micro-piliers, sur des grains d'orientations différentes déterminées par l'EBSD. Dans la deuxième nous nous sommes intéressés à la déformation de micropiliers via des essais de compression cyclés in-situ couplés à la micro-diffraction Laue. L'obj

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41

Heatwole, Edwin L. "Allowable bending strength enhancement of 2 by 4 lumber by tension and compression proofloading." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/53718.

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Research has established that correlations exist between bending and tension, and bending and compression strength of lumber. Because of this correlation, improvement in bending strength may be realized from proofloading in tension or compression. The data utilized in a reliability analysis was from Galligan et al. (1986) that characterized the properties of 2-inch softwood dimension lumber with regressions and probability distributions. Randomly selected groups of 2 by 4 1650f-1.5E Hem-fir and No.2 KD Southern Pine were evaluated for bending strength. One group from each species was selected

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42

St, John Ashlee Nicole. "Compression effects on the phase behavior of microgel assemblies." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/22666.

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Thesis (Ph. D.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2008.<br>Committee Chair: Lyon, L. Andrew; Committee Member: Breedveld, Victor; Committee Member: Hernandez, Rigoberto; Committee Member: Srininvasarao, Mohan; Committee Member: Weeks, Eric R.

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43

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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44

Beegan, Andrew Peter. "Wavelet-based Image Compression Using Human Visual System Models." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/32939.

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Recent research in transform-based image compression has focused on the wavelet transform due to its superior performance over other transforms. Performance is often measured solely in terms of peak signal-to-noise ratio (PSNR) and compression algorithms are optimized for this quantitative metric. The performance in terms of subjective quality is typically not evaluated. Moreover, the sensitivities of the human visual system (HVS) are often not incorporated into compression schemes. This paper develops new wavelet models of the HVS and illustrates their performance for various scalar wav

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45

Mihajlovic, Bojan. "Compression and security platform for the testing of wireless sensor network nodes." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18820.

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This thesis considers the in-field testing of wireless sensor network (WSN) nodes as a means of providing increased network uptime. Such nodes operate with strict limits on energy, cost, computing power, and are prone to attack. While testing through software-based self-test (SBST) programs has advantages on WSN nodes, energy efficiency can be increased by compressing SBST programs before distributing them. Of several compression schemes considered for the task, the BSTW algorithm with Rice coding demonstrates node energy savings while providing a low memory footprint and good compression rati

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46

Valero, Diana (Diana E. ). "Compression testing and measurement of material properties of a double network hydrogel." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98758.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (page 26).<br>Double network hydrogel samples were synthesized and manufactured out of polyacrylamide (PAAm) and alginate solutions. They were casted into cube molds with each side measuring 20 mm. Samples were tested under compressive loads in cyclic compression tests and stress relaxation tests. A viscoelastic model was applied and material properties were calculated using the experimental data. The elastic modulus of

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47

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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48

Wilson, Keith. "A review of compression testing procedure with reference to a Trenton limestone /." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=47028.

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Galatanu, Anca Daniela. "Behaviour and design of hollow flange beams under axial compression." Thesis, Queensland University of Technology, 1997. https://eprints.qut.edu.au/36012/1/36012_Galatanu_1997.pdf.

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The Hollow Flange Beam (HFB) is a relatively new cold-formed steel section developed by Palmer Tube Mills (Australia) Pty. Ltd., released into Australian markets in November 1993, and targeting applications in the light industrial and domestic markets. It was envisaged early in the product development that the section will be primarily used as a flexural member. Therefore research and development effort was concentrated in this area, and little is kno,vn about the HFB behaviour under axial compression. Furthermore, because of its unique fabrication process and distorsional buckling beh

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Jaramillo, Fulvio E. "Axially loaded stainless steel compression members." Thesis, Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-07102006-144943/.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2007.<br>Leroy Z. Emkin, Committee Member ; Lawrence F. Kahn, Committee Member ; Abdul-Hamid Zureick, Committee Chair.

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