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Dissertations / Theses on the topic 'Elastic properties'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Hornby, Brian E. "The elastic properties of shales." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296669.

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2

Dunk, Alan. "Elastic properties of triglycine sulphate." Thesis, University of Bath, 1987. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376297.

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3

Paine, A. C. "Elastic properties of granular materials." Thesis, University of Bath, 1998. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245957.

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4

Harrington, Jonathan J. "Hierarchical modelling of softwood hygro-elastic properties." Thesis, University of Canterbury. Mechanical Engineering, 2002. http://hdl.handle.net/10092/8061.

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The hygro-elastic behaviour of wood under load or when subjected to environmental changes is of considerable practical interest. This behaviour can be determined by exhaustive experimentation, but such an approach makes explaining its origin, which from some perspectives can be more important than its prediction, problematic. This thesis attempts to establish a model (actually a hierarchical set of models) that goes some way toward both predicting and explaining the mechanics of wood. Attention is focused on radiata pine because of the commercial importance of this species in New Zealand, but

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5

Han, Tongcheng. "Joint elastic-electrical properties of reservoir sandstones." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/195017/.

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Over the last decade, marine controlled source electromagnetic (CSEM), sub-seabed imaging has developed to a state where routine resistivity mapping of hydrocarbon reservoirs is now possible. Co-located marine seismic and electrical resistivity survey data could provide the engineering parameters needed to better assess the economic potential of hydrocarbon reservoirs without the need for drilling, and could provide additional reservoir monitoring capabilities in the future. However, proper exploitation of joint seismic-CSEM datasets will require a much better understanding of the inter-relati

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6

Chatterjee, Sudipta. "Tribological properties of pseudo-elastic nickel-titanium." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1610048621&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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7

Bastos, de Paula Osni. "Elastic properties of carbonates : measurements and modelling." Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/1417.

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This thesis is a multi-scale study of carbonate rocks, from the nanoscale and digital rock investigations to the imaging studies of carbonate reservoir analogues. The essential links between these extremes are the carbonate physical properties and rock-physics models, which are investigated here through the modelling of ultrasonic wave propagation in carbonate samples, focusing on elastic stress sensitivities, saturating fluids and porosity models. Validation of Gassmann fluid substitution in carbonates is also investigated using correlations between core and well log measurements.On the nanos

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8

Ortolani, Matteo. "Elastic Properties of Textured Nanocrystalline Thin Films." Doctoral thesis, Università degli studi di Trento, 2011. https://hdl.handle.net/11572/367871.

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Polycrystalline thin films and coatings often show preferred orientation of grains and crystalline domains, and develop a residual stress state as an effect of the growth mechanisms. These features can be conveniently measured by means of non-contact and non-destructive X-ray diffraction. As the technique only measures a map of strains along selected directions, stress evaluation requires a suitable constitutive equation, where the expression of moduli can be far from trivial if texture effects are to be taken into account; additionally, a grain interaction model needs to be enforced to descri

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9

Ortolani, Matteo. "Elastic Properties of Textured Nanocrystalline Thin Films." Doctoral thesis, University of Trento, 2011. http://eprints-phd.biblio.unitn.it/682/1/tesi_dottorato.pdf.

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Polycrystalline thin films and coatings often show preferred orientation of grains and crystalline domains, and develop a residual stress state as an effect of the growth mechanisms. These features can be conveniently measured by means of non-contact and non-destructive X-ray diffraction. As the technique only measures a map of strains along selected directions, stress evaluation requires a suitable constitutive equation, where the expression of moduli can be far from trivial if texture effects are to be taken into account; additionally, a grain interaction model needs to be enforced to descri

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10

Topol, Heiko [Verfasser]. "Acoustic and mechanical properties of viscoelastic, linear elastic, and nonlinear elastic composites / Heiko Topol." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2012. http://d-nb.info/1028213352/34.

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11

Mergell, Boris. "Structural and elastic properties of DNA and chromatin." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=96993775X.

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12

Ragauskas, Paulius. "Identification Of Elastic Properties Of Layered Composite Materials." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20101119_134738-62490.

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In this thesis the problems of identification accuracy of elastic properties of materials are examined. The main object of study is samples of various materials and their elastic properties. This is an important subject of theoretical studies of various materials. The main thesis objective is to create an effective technology for precise identification of all the elastic characteristics of the sample. The de-veloped algorithms are to be applied in the material manufacturing industry. Thesis also aims at exploring accuracy and sensitivity of the identification of elastic properties of materials

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13

Marquardt, Hauke [Verfasser]. "Single-crystal elastic properties of geomaterials / Hauke Marquardt." Berlin : Freie Universität Berlin, 2009. http://d-nb.info/1023665158/34.

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14

Andrea, Martijn. "The anisotropic elastic properties of clay-rich rocks." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243413.

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15

StroÌˆmer, Jan. "Elastic properties of nematic and cholesteric liquid crystals." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.410665.

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16

Swift, Mark Jonathan. "Acoustic and Physical Properties of Poro-Elastic Media." Thesis, University of Bradford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520232.

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17

Jones, G. W. "Static Elastic Properties of Composite Materials Containing Microspheres." Thesis, University of Oxford, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487266.

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This thesis aims to model the uniaxial deformation of a class of materials consisting of microscopic spherical shells embedded in a rubber matrix. These shells are assumed to buckle as the stress on the material increases. To motivate the analysis we consider the paradigm problem of the debonding of a distribution of cylindrical inclusions in an elastic material undergoing antiplane shear, with bonded and debonded inclusions playing the role of unbuckled and buckled shells respectively. We begin the modelling of the microsphere-containing material by considering the buckling of an isolated emb

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18

Zrida, Hana. "Composites with bundle mesostructure: Elastic properties and Damage." Doctoral thesis, Luleå tekniska universitet, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25761.

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Many types of composite materials are today used in various types of load carrying structures, due to their excellent strength and stiffness to weight ratio. Simplicity, reliability and low cost of the material processing are important factors affecting the final selection.With the textile reinforced composites, the cost-efficiency is reached by using dry preforms which are impregnated by resin infusion, resin transfer molding etc.; this have made a break-through and have been widely used. Textile composites with bundle meso-structure have been studied in this thesis for elastic properties and

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19

Olsen, Casper. "Elastic and electric properties of North Sea chalk." Kgs. Lyngby : Institute of Environment & Resources, Technical University of Denmark, 2007. http://www.er.dtu.dk/publications/fulltext/2007/MR2007-123.pdf.

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20

Liu, Huijin. "The elastic and dielectric properties of structural ceramics." Thesis, University of Bath, 1999. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285312.

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21

Alzubi, Feras G. "Atomistic modeling of elastic and transport properties of carbon nanotubes." Virtual Press, 2008. http://liblink.bsu.edu/uhtbin/catkey/1398706.

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A first principles atomistic calculation and analysis is used to conduct studies on the mechanical and electron transport properties of selected stretched single-wall carbon nanotube segments. The atomic forces, electron densities, current, voltage and total energies are calculated for these carbon nanotube segments using Atomistix's Virtual NanoLab (VNL) and ToolKit (ATK), a software package for electronic structure calculations and molecular dynamics simulations of different molecular systems. Plots of electronic energy spectra, densities of states, force versus length, and current-voltage d

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22

Andrews, Gordon Todd. "Elastic and structural properties of supported porous silicon layers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0004/NQ42470.pdf.

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23

Masouras, Konstantinos. "Elastic and surface properties of model nanofilled resin-composites." Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509838.

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24

Liu, Harry. "Elastic properties and phases of bent core liquid crystal." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/elastic-properties-and-phases-of-bent-core-liquid-crystal(1428e685-754c-42c0-890b-9ae83f0b5f7c).html.

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The recent interest in bent core liquid crystal has shown many unique physical properties, such the anomalous behaviour of the elastic constants (SplayK1, Twist K2, and BendK3). In bent core liquid crystals it is observed that K3K1). Such behaviour is analogous to calamitic liquid crystals but is in contrast to all other bent-core nematic materials reported to date. Such a result questions some of the current explanations for the elastic behaviour of bent-core materials. Using molecular field theory and atomistic modelling the different elastic behaviour predicted is again in excellent agreeme

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25

Tsarouchas, Dimitris. "Fibre network materials : architecture and effective linear elastic properties." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610878.

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26

Tian, Liyun. "Density Functional Study of Elastic Properties of Metallic Alloys." Licentiate thesis, KTH, Tillämpad materialfysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-179336.

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Special quasi-random structure (SQS) and coherent potential approximation (CPA) are techniques widely employed in the first-principles calculations of random alloys. The aim of the thesis is to study these approaches by focusing on the local lattice distortion (LLD) and the crystal symmetry effects. We compare the elastic parameters obtained from SQS and CPA calculations. For the CPA and SQS calculations, we employ the Exact Muffin-Tin Orbitals (EMTO) method and the pseudopotential method as implemented in the Vienna Ab initio Simulation Package (VASP), respectively. We compare the predicted t

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27

Duffy, Thomas S. Ahrens T. J. Ahrens T. J. "Elastic properties of metals and minerals under shock compression /." Diss., Pasadena, Calif. : California Institute of Technology, 1992. http://resolver.caltech.edu/CaltechETD:etd-05172007-104609.

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28

Ruiz, Penã Franklin J. (Franklin José) 1962. "Elastic properties of sedimentary anisotropic rocks : (measurements and applications)." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/58361.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, February 1999.<br>Includes bibliographical references (leaves 75-78).<br>In multidisciplinary studies carried out in the Budare Oil Field of the Great Oficina Oil Field, there was difficulty matching well log synthetic seismograms with 2D and 3D seismic data. In addition, the seismically determined depths of reservoir horizons are greater than the well sonic log depths. To examine this discrepancy we conducted an experimental study of dynamic elastic parameters of the rocks in the oil fie

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29

Marchetti, Mara. "Elastic properties characterization of nuclear fuels under extreme conditions." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTS053/document.

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Ce travail de recherche vise à étudier les propriétés élastiques par microscopie acoustique du combustible nucléaire dans trois situations particulières: combustible en utilisation normale en réacteur nucléaire, combustible stocké après la période d’irradiation et combustible en conditions extrêmes suite à un accident nucléaire. Les mesures réalisées sur les échantillons irradiés ont conduit à plusieurs résultats majeurs: validation d’une loi corrélant la vitesse des ondes de Rayleigh à la densité du dioxyde d’uranium irradié ou frais; détermination de la porosité dans le combustible irradié;

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30

Davis, Roosevelt. "A PREDICTION OF ELASTIC PROPERTIES OF AN ELASTIC COUPLING USING EXPERIMENTAL DATA AND FINITE ELEMENT ANALYSIS." MSSTATE, 2003. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07242003-163336/.

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The dynamic properties of the elastic coupling are not readily known; therefore testing has to be performed in order to determine these properties. This is the primary objective for this thesis. The dynamic properties in question are the stiffness and damping. An attempt to determine the dynamic properties was also be carried out through the use of finite element analysis. There are two different configurations of couplings. One configuration forms the coupling from several elastic elements, referred to as HRC elements, which are manufactured in three sizes: A, B, and C. The second configurati

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31

Farmer, David John. "Elastic measurements in ultra-thin polymer structures." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/33073/.

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This thesis contains details of a series of experiments performed to investigate the acoustic and elastic properties of ultra-thin polymer structures. Three main investigations were conducted. The first involved studying quantised vibrations in ultra-thin (∼100 nm) polystyrene films on silicon substrates. These films were vibrated via the picosecond acoustic technique, an optical pump-probe method. Quantised, harmonic vibrations were observed in the films with frequencies of the order of 10 GHz. The polymer films were then loaded by evaporating small thicknesses (2.5 - 30 nm) of gold. The freq

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32

Wan, Yanyi. "Static and dynamic transport properties of 2D elastic random media /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202007%20WAN.

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33

Sevostianov, Igor, Mahesh Bogarapu, and Pavel Y. Tabakov. "Correlation between elastic and electric properties for cyclically loaded metals." Springer, 2002. http://hdl.handle.net/10321/639.

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Originally published in: International Journal of Fracture, Vol. 2, No. 3-4, 2005.<br>A new method of evaluation of the elastic property deterioration due to accumulated damage is suggested and experimentally verified. It is based on the explicit correlations between two groups of anisotropic properties – conductivity and elasticity, recently established for porous/microcracked materials with anistropic microstructures. An experimental study of fatigue has been done to verify the theoretical predictions. The electrical resistance and Young''s modulus are measured as functions of the number of

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34

Armstrong, D. E. J. "Measuring elastic, plastic and fracture properties using micro-cantilever testing." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526568.

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35

SOBREIRA, GUSTAVO HENRIQUE OLIVEIRA. "EVALUATION OF ELASTIC PROPERTIES OF CARBONATIC ROCKS FROM MICROSTRUCTURAL ANALYSIS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=29612@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Reservatórios carbonáticos contêm entre 50 e 60 porcento de petróleo e gás do mundo. No entanto, estas rochas têm apresentado problemas operacionais consideráveis durante as etapas de perfuração e produção. Tais problemas são originados pelas dificuldades na caracterização adequada destas rochas em função da complexa distribuição espacial de suas micro e macro estrutura. Enquanto ambas as escalas possuem importância no entendimento do comport

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36

Zhu, Wenqi. "Effective elastic properties of foams : Morphological study and micromechanical modeling." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEI043.

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Les matériaux cellulaires poreux de type mousse présentent un grand intérêt pour de nombreuses applications. Leurs propriétés thermiques, mécaniques, acoustiques dépendent fortement de leur microstructure complexe. Afin de mieux comprendre la relation microstructure/propriétés mécaniques de ces matériaux, une modélisation micromécanique basée sur une méthode d’homogénéisation périodique et le lemme de Hill est proposée pour prédire les propriétés élastiques effectives de ces matériaux. Une approche basée sur le diagramme de Voronoï est utilisée pour générer des structures de mousse périodiques

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37

Gump, Jared Clinton. "Elastic properties of germanium selenium glasses and metastable cobalt films /." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486462067840445.

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38

Åkerlind, Amanda. "Elastic properties of the Singö zone from a discrete approach." Thesis, KTH, Skolan för arkitektur och samhällsbyggnad (ABE), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-268640.

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A rock mass is characterised by the properties of the intact rock and the fractures. Considering the impact of both constituents is of vital importance for assessing the behaviour of the rock mass. In particular in the case of complex or heterogeneous rock mass compositions. A discrete approach, by using the Discrete Fracture Network (DFN) methodology, enables for the consideration of these aspects.This master’s thesis concerns the evaluation of elastic properties of the Singö deformation zone. A discrete approach has been applied by three-dimensional discrete fracture network modelling, using

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39

SALVALAGLIO, MARCO. "Continuum modeling of vertical heterostructures: elastic properties and morphological evolution." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2016. http://hdl.handle.net/10281/100682.

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The development of cutting-edge opto- and micro-electronic devices requires novel fabrication techniques, able to deliver high-quality materials, monolithically integrable into Si-based technology. Theoretical models and simulations supporting the experimental activities are highly needed to fully understand the growth physics at the nano- and micro-scale and tailor semiconductor heterostructures for technological applications. In this work, the modeling of the plasticity onset and of the morphological evolution for Ge/Si vertical heterostructures is introduced, fostered by the peculiar featur

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40

Ashaolu, Folorunso. "Measuring the Nanoindentation Properties of Alendronate-Time Treated Canine Cortical." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/522.

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This study examines the nanoindentation (energy inclusive) properties of 0.2 mg/kg alendronate treated ribs at one and three years against a vehicle treated control in a fresh-frozen, non-cold-mounted, condition. This was to verify if the tissue-level properties for 0.2 ALN treated beagles would increase because of an increased level of mineralization despite a microdamage increase. A total of twelve (12) skeletally mature (1–2 years old) female beagle dogs were treated daily for three years and one year with oral doses of vehicle (VEH, 1 mL/kg saline) or alendronate (ALN, 0.2 Merck, Rahway,

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41

Puentes, Heras M. "The use of SAW methods in probing near-surface elastic properties." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299101.

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42

Nanda, Atul. "Finite element analysis of elastic-plastic anisotropic soils." Diss., Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/53650.

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Elastic-plastic stress·strain models are developed for initially anisotropic soils. The models are developed for both total stress (undrained) analyses and for effective stress (drained) analyses. For anlsotroplc undralned coheslve soils under monotonic loading an elastic-plastic isotropic-hardening model is developed. For complex loading conditions the model is extended using multisurface plasticity. For effective stress analyses of soils, the Cam-Clay model concepts are generalized for initially anisotropic soils. Both isotropic and anisotropic hardening are used in the model. The behavior o

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43

Ziebarth, Noel Marysa. "Atomic Force Microscopy Measurement of the Elastic Properties of the Lens." Scholarly Repository, 2008. http://scholarlyrepository.miami.edu/oa_dissertations/181.

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The goal of this project was to develop techniques and instrumentation to measure the elastic properties of the lens and lens capsule in situ and their changes with age using Atomic Force Microscopy (AFM). The studies include the construction, characterization, and calibration of laboratory-based Atomic Force Microscope (AFM) to measure mechanical properties of ophthalmic tissues. Atomic Force Microscopy is a nanoscale imaging technique that has been applied to mechanical property measurement through nanoindentation. Young's modulus of elasticity is determined by monitoring the cantilever d

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44

Sklar, Zenon. "Quantitative acoustic microscopy of coated materials." Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308851.

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45

Le, Menestrel Maxime. "Finite element modeling of the elastic properties of isotropic and anisotropic synthetic foams." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16038.

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46

Willoughby, Natasha. "Dynamic homogenization for the elastic properties of periodic and random composites." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/dynamic-homogenization-for-the-elastic-properties-of-periodic-and-random-composites(da82e607-bc1f-40e9-8e62-ec5fbca1f68f).html.

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In this thesis we are interested in the propagation of low-frequency linear elastic waves through composite materials. We use a variety of dynamic homogenization techniques to find the effective elastic properties of some composites. We consider composites with isotropic phases for ease of exposition but the theory could easily be extended to anisotropic inclusions or host.We use a Representative Volume Element approach with the Method of Asymptotic Homogenization to model a random fibre-reinforced composite. The fibres are all aligned in the same direction and are taken to be of infinite exte

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47

Peydaye, Saheli Ghazal. "Homogenization Relations for Elastic Properties Based on Two-Point Statistical Functions." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14492.

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In this research, the homogenization relations for elastic properties in isotropic and anisotropic materials are studied by applying two-point statistical functions to composite and polycrystalline materials. The validity of the results is investigated by direct comparison with experimental results. In todays technology, where advanced processing methods can provide materials with a variety of morphologies and features in different scales, a methodology to link property to microstructure is necessary to develop a framework for material design. Statistical distribution functions are common

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48

Lee, Jae Sang. "Effective properties of three-phase electro-magneto-elastic multifunctional composite materials." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/1448.

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Coupling between the electric field, magnetic field, and strain of composite materials is achieved when electro-elastic (piezoelectric) and magneto-elastic (piezomagnetic) particles are joined by an elastic matrix. Although the matrix is neither piezoelectric nor piezomagnetic, the strain field in the matrix couples the E field of the piezoelectric phase to the B field of the piezomagnetic phase. This three-phase electro-magneto-elastic composite should have greater ductility and formability than a two-phase composite in which E and B are coupled by directly bonding two ceramic materials with

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49

Ridler, Anne C. "Can internal elastic properties of cartilage be measured using MR elastography?" Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ58836.pdf.

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50

Sun, Miao. "Optimal Recovery of Elastic Properties for Anisotropic Materials through Ultrasonic Measurements." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/SunM2002.pdf.

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