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Dissertations / Theses on the topic 'Inhomogeneous materials'

Author: Grafiati

Published: 4 June 2021

Last updated: 30 July 2024

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1

Feder, David. "Inhomogeneous d-wave superconductors /." *McMaster only, 1997.

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2

Barabash, Sergey V. "Topics in the Physics of Inhomogeneous Materials." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1053637716.

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3

Poladian, Leon. "Effective transport and optical properties of composite materials." Phd thesis, Department of Theoretical Physics, 1990. http://hdl.handle.net/2123/11724.

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4

Koss, Robert Stephen. "Numerical studies of macroscopically disordered materials /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487322984316204.

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5

Larsson, Ashley Ian. "Mathematical aspects of wave theory for inhomogeneous materials /." Title page, table of contents and summary only, 1991. http://web4.library.adelaide.edu.au/theses/09PH/09phl334.pdf.

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6

Kusuma, Jeffry. "On some mathematical aspects of deformations of inhomogeneous elastic materials /." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09PH/09phk97.pdf.

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7

Kinkade, Kyle Richard. "Divergence form equations arising in models for inhomogeneous materials." Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/900.

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8

Azis, Mohammad Ivan. "On the boundary integral equation method for the solution of some problems for inhomogeneous media." Title page, contents and summary only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09pha995.pdf.

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Errata pasted onto front end-paper. Bibliography: leaves 101-104. This thesis employs integral equation methods, or boundary element methods (BEMs), for the solution of three kinds of engineering problems associated with inhomogeneous materials or media: a class of elliptical boundary value problems (BVPs), the boundary value problem of static linear elasticity, and the calculation of the solution of the initial-boundary value problem of non-linear heat conduction for anisotropic media.

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9

Huang, Zhoushen. "Spontaneous formation of charge inhomogeneity on silica surface immersed in water /." View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?PHYS%202007%20HUANG.

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10

Gammage, Justin Wilkinson D. S. "Damage in heterogeneous aluminum alloys /." *McMaster only, 2002.

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11

Esward, T. J. "Problems in the ultrasonic characterisation of inhomogeneous materials due to scattering." Thesis, University of Surrey, 1995. http://epubs.surrey.ac.uk/843619/.

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Ultrasound wavefronts travelling through inhomogeneous materials such as biological tissues and tissue mimics are distorted by scattering processes. It has been proposed that measurements of these transmitted wavefronts may be used to define the contribution of coherent and incoherent scattering to the attenuation coefficient of such materials, by means of a comparison between the outputs of phase sensitive and phase insensitive receivers. Measurements of the complex pressure fields transmitted by scattering specimens consisting of glass beads in silicone rubber and by specimens of ox liver, k

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12

Becker, Jens. "Investigation of the microstructure of heterogeneous materials using ultrasonic waves." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/22997.

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13

Lam, Tsz-fung. "Nesting of 2D parts with complex geometry and material heterogeneity." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/HKUTO/record/B39557005.

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14

Lam, Tsz-fung, and 林子峰. "Nesting of 2D parts with complex geometry and material heterogeneity." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39557005.

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15

Wang, Feng. "A study to determine a practical technology for manufacturing components made of a multiphase perfect material." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B39286630.

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16

Wang, Feng, and 王楓. "A study to determine a practical technology for manufacturing components made of a multiphase perfect material." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B39286630.

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17

Lee, Chung Yung. "Bistable twised nematic liquid crystal displays by inhomogeneous alignment surfaces /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?ECED%202009%20LEE.

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18

Fang, Zhibin Sun Wei. "Image-guided modeling, fabrication and micromechanical analysis of bone and heterogeneous structure /." Philadelphia, Pa. : Drexel University, 2005. http://dspace.library.drexel.edu/handle/1860/549.

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19

Willett, Lori Jo. "Condensation on heterogeneous regular surfaces /." free to MU campus, to others for purchase, 1999. http://wwwlib.umi.com/cr/mo/fullcit?p9964012.

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20

Deoli, Naresh T. "Sputtering of Bi and Preferential Sputtering of an Inhomogeneous Alloy." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc700021/.

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Angular distributions and total yields of atoms sputtered from bismuth targets by normally incident 10 keV -50 keV Ne+ and Ar+ ions have been measured both experimentally and by computer simulation. Polycrystalline Bi targets were used for experimental measurements. The sputtered atoms were collected on high purity aluminum foils under ultra-high vacuum conditions, and were subsequently analyzed using Rutherford backscattering spectroscopy. The Monte-Carlo based SRIM code was employed to simulate angular distributions of sputtered Bi atoms and total sputtering yields of Bi to compare with expe

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21

Sreeranganathan, Arun. "Realistic micromechanical modeling and simulation of two-phase heterogeneous materials." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24607.

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Thesis (Ph.D.)--Materials Science and Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Gokhale, Arun; Committee Member: Gall, Kenneth; Committee Member: Garmestani, Hamid; Committee Member: Kurtis, Kimberly; Committee Member: Thadhani, Naresh

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22

Mao, Yuxiong. "Computer simulations of realistic three-dimensional microstructures." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33954.

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A novel and efficient methodology is developed for computer simulations of realistic two-dimensional (2D) and three-dimensional (3D) microstructures. The simulations incorporate realistic 2D and 3D complex morphologies/shapes, spatial patterns, anisotropy, volume fractions, and size distributions of the microstructural features statistically similar to those in the corresponding real microstructures. The methodology permits simulations of sufficiently large 2D as well as 3D microstructural windows that incorporate short-range (on the order of particle/feature size) as well as long-range (hundr

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23

Storozhenko, V. A., A. V. Myagkiy, and R. P. Orel. "Filtering of interference of inhomogeneous regular structure in thermal non-destructive control of cellular structures." Thesis, Eskisehir technical university, 2021. https://openarchive.nure.ua/handle/document/18954.

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Honeycomb constructions are the most widely used materials in contemporary aviation and space technology. They are the basis for the housings of practically all products of this sector, where reliability of all parts should meet the in-creased requirements. Special attention is paid to the quality of composite materials and to the absence of defects such as the places of adhesion failure (exfoliation) between the skin and the honeycomb filler. Therefore, increase in the efficiency and reliability of thermal flaw detection, based on in-depth analysis of the processes of detecting defects and de

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24

Luscher, Darby J. "A hierarchical framework for the multiscale modeling of microstructure evolution in heterogeneous materials." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33968.

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All materials are heterogeneous at various scales of observation. The influence of material heterogeneity on nonuniform response and microstructure evolution can have profound impact on continuum thermomechanical response at macroscopic "engineering" scales. In many cases, it is necessary to treat this behavior as a multiscale process. This research developed a hierarchical multiscale approach for modeling microstructure evolution. A theoretical framework for the hierarchical homogenization of inelastic response of heterogeneous materials was developed with a special focus on scale invari

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25

Feng, Jianwen. "Probabilistic modelling of heterogeneous media." Thesis, Swansea University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.644724.

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26

Shen, Jeng-Jung. "Heterogeneous integration and the exploitation of strain in MBE growth : engineered substrates." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/13046.

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27

Wheaton, Chad J. "Tomographic traveltime inversion for linear inhomogeneity and elliptical anisotropy /." Internet access available to MUN users only, 2004. http://collections.mun.ca/u?/theses,69654.

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28

Specht, Paul Elliott. "Shock compression response of aluminum-based intermetallic-forming reactive systems." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47559.

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Heterogeneities at the meso-scale strongly influence the shock compression response of composite materials. These heterogeneities arise from both structural variations and differing physical/mechanical properties between constituents. In mixtures of reactive materials, such as Ni and Al, the meso-scale heterogeneities greatly affect component mixing and activation, which, in turn, can induce a chemical reaction. Cold-rolled multilayered composites of Ni and Al provide a unique system for studying the effects of material heterogeneities on a propagating shock wave, due to their full density,

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29

Simpson, William M. R. "Surprises in theoretical Casimir physics : quantum forces in inhomogeneous media." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/6338.

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This thesis considers the problem of determining Casimir-Lifshitz forces in inhomogeneous media. The ground-state energy of the electromagnetic field in a piston-geometry is discussed. When the cavity is empty, the Casimir pressure on the piston is finite and independent of the small-scale physics of the media that compose the mirrors. However, it is demonstrated that, when the cavity is filled with an inhomogeneous dielectric medium, the Casimir energy is cut-off dependent. The local behavior of the stress tensor commonly used in calculations of Casimir forces is also determined. It is shown

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30

Nam, Kyung Moon. "Modeling Terahertz Diffuse Scattering from Granular Media Using Radiative Transfer Theory." PDXScholar, 2010. https://pdxscholar.library.pdx.edu/open_access_etds/380.

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Terahertz (THz) spectroscopy can potentially be used to probe and characterize inhomogeneous materials, however spectroscopic identification of such materials from spectral features of diffuse returns is a relatively underdeveloped area of study. In this thesis, diffuse THz scattering from granular media is modeled by applying radiative transfer (RT) theory for the first time in THz sensing. Both classical RT theory and dense media radiative transfer (DMRT) theory based on the quasi-crystalline approximation (QCA) are used to calculate diffuse scattered intensity. The numerical solutions of th

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31

Yigitler, Huseyin. "Permanent Magnet Design And Image Reconstruction Algorithm For Magnetic Resonance Imaging In Inhomogeneous Magnetic Fields." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/2/12607627/index.pdf.

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Recently, the use of permanent magnets as magnetic field sources in biomedical applications has become widespread. However, usage of permanent magnets in magnetic resonance imaging (MRI) is limited due to their inhomogeneous magnetic field distributions. In this thesis, shape and geometry optimization of a magnet is performed. Moreover, placement of more than one magnet is optimized to obtain desired magnetic field distribution in specific region of space. However, obtained magnetic field distribution can not be used in the conventional MRI image reconstruction techniques. Consequently, an ima

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32

Kim, Kwangmoo. "Topics in the theory of inhomogeneous media composite superconductors and dielectrics /." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1180537980.

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33

Sonon, Bernard. "On advanced techniques for generation and discretization of the microstructure of complex heterogeneous materials." Doctoral thesis, Universite Libre de Bruxelles, 2014. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209087.

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The macroscopic behavior of complex heterogeneous materials is strongly governed by the interactions between their elementary constituents within their microstructure. Beside experimental efforts characterizing the behaviors of such materials, there is growing interest, in view of the increasing computational power available, in building models representing their microstructural systems integrating the elementary behaviors of their constituents and their geometrical organization. While a large number of contributions on this aspect focus on the investigation of advanced physics in material par

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34

Fogarty, Tiernan. "Finite volume methods for acoustics and elasto-plasticity with damage in a heterogeneous medium /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/6751.

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35

Narayanan, Rajesh. "Influence of rare regions on the critical properties of systems with quenched disorder /." view abstract or download file of text, 1999. http://wwwlib.umi.com/cr/uoregon/fullcit?p9948028.

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Thesis (Ph. D.)--University of Oregon, 1999.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 165-166). Also available for download via the World Wide Web; free to University of Oregon users. Address: http://wwwlib.umi.com/cr/uoregon/fullcit?p9948028.

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36

Tovar, Anthony Alan. "Off-axis multimode light beam propagation in tapered lenslike media including those with spatial gain or loss variation." PDXScholar, 1988. https://pdxscholar.library.pdx.edu/open_access_etds/3839.

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The propagation of light beams in inhomogeneous dielectric media is considered. The derivation begins with first principles and remains general enough to include off-axis asymmetric multimode input beams in tapered lenslike media with spatial variations of gain or loss. The tapering of lenslike media leads to a number of important applications. A parabolic taper is proposed as a model for a heated axially stretched fiber taper, and beams in such media are fully characterized. Other models are proposed by the concatenation of a parabola with other taper functions.

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37

Le, Cor Thomas. "Etude du comportement mécanique des terrains anisotropes lors de travaux de génie civil." Thesis, Rennes, INSA, 2014. http://www.theses.fr/2014ISAR0026/document.

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Les travaux de recherche présentés dans ce manuscrit ont été menés dans le cadre d’une convention CIFRE avec le Groupe Dacquin. Le sous-sol rennais est composé, en majorité, de schistes datés du Briovérien. Ces terrains, qui peuvent être rencontrés sur une grande partie du massif armoricain, présentent des degrés d’altération et de fracturation extrêmement variables à l’échelle du bassin rennais. Cette variabilité est très difficile à prendre en compte dans le cadre de la réalisation de soutènement, tant au niveau de la conception qu’au niveau de l’exécution. Dans un premier temps, des modélis

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38

Höfling, Felix. "Dynamics of Rod-Like Macromolecules in Heterogeneous Materials /." Münster, Westf : Monsenstein und Vannerdat, 2007. http://deposit.d-nb.de/cgi-bin/dokserv?id=2930009&prov=M&dok_var=1&dok_ext=htm.

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39

Simon, Jean-Christophe. "Diffusion électromagnétique dépendante dans les milieux hétérogènes denses." Rouen, 1994. http://www.theses.fr/1994ROUES061.

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Il est montré que la diffusion électromagnétique dans les milieux hétérogènes denses fait intervenir de nombreux couplages multipolaires entre les particules. Dans ce travail, la distinction est faite entre la diffusion indépendante, couramment utilisée, et la diffusion dépendante. La première partie décrit les effets de diffusions multiple et cohérente, phénomènes liés à la diffusion indépendante. L'équation de transfert radiatif est résolue par une méthode de Monte-Carlo, et l'influence des propriétés d'absorption du milieu environnant les particules est mise en évidence. Les limites de la d

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40

Clotet, i. Fons Xavier. "Imbibition in a model open fracture. Capillary rise, kinetic roughening, and intermittent avalanche dynamics." Doctoral thesis, Universitat de Barcelona, 2014. http://hdl.handle.net/10803/284588.

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The dynamics of fractured media flows is relevant in many processes of interest that range from the micrometre to the kilometre lengthscales. Flow in disordered media has been proven to be an interesting system to study fundamental physics problems also. The goal of this Thesis is to study the spatio-temporal dynamics of the oil-air interface between displaced air and invading oil, in imbibition displacements through a model open fracture. The research combines exhaustive experimental work with accurate data analysis based on methods of nonlinear statistical physics. Imbibition is a process of

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41

Höfling, Felix. "Dynamics of rod like macromolecules in heterogeneous materials." Münster Verl.-Haus Monsenstein und Vannerdat, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2930009&prov=M&dok_var=1&dok_ext=htm.

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42

Francescato, Pascal. "Prévision du comportement plastique des matériaux hétérogènes à constituants métalliques : application aux composites à matrice métallique à fibres continues et aux plaques perforées." Université Joseph Fourier (Grenoble), 1994. http://www.theses.fr/1994GRE10110.

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Ce travail de these porte sur la mise en uvre numerique de la methode d'homogeneisation periodique en calcul a la rupture ou analyse limite et son application a la prevision des proprietes de resistance macroscopiques de materiaux composites a fibres longues ou de plaques metalliques perforees. La methode numerique adoptee consiste a ramener la mise en uvre des approches statique par l'interieur et cinematique par l'exterieur a la resolution d'un probleme d'optimisation lineaire pose sur le volume elementaire representatif (v. E. R. ). Les programmes numeriques font appel a une utilisation ori

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43

Benkemoun, Nathan. "Contribution aux approches multi-échelles séquencées pour la modélisation numérique des matériaux à matrice cimentaire." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2010. http://tel.archives-ouvertes.fr/tel-00657311.

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L'objectif principal de cette thèse est de développer un modèle numérique capable de proposer une représentation fine des phénomènes de fissuration pour les matériaux quasi-fragiles à matrice cimentaire. Dans ce sens, l'échelle pertinente retenue est l'échelle mesoscopique. L'échelle mesoscopique est ici de l'ordre du centimètre et le matériau peut être considéré comme bi-phasique (agrégats inclus dans un mortier, contenant lui même des inclusions de taille inférieure). Par ailleurs, de part la diversité des phénomènes de fissuration pour les matériaux quasi-fragiles comme le béton, il est néc

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44

Bhallamudi, Vidya Praveen. "Spins in heterogeneous landscapes: Consequences for transport and imaging." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306871981.

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45

Gilmore, Sean William. "Electromagnetic scattering by an inhomogeneous penetrable material with an embedded resistive sheet /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487778663284816.

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46

Sacristán, López-Mingo Carlos Javier. "Etude des propriétés acoustiques et comportement à l'impact de matériaux poreux de type mousses métalliques homogènes et inhomogènes." Thesis, Dijon, 2015. http://www.theses.fr/2015DIJOS035/document.

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Ce travail concerne l’étude acoustique théorique et expérimentale des matériaux poreux à squelette métallique, macroscopiquement homogènes et inhomogènes ainsi que l’étude de leurs propriétés mécaniques de comportement au choc pour comparaison. Le modèle acoustique de Johnson -Champoux - Allard s’est montré adapté pour la modélisation acoustique. Ce modèle associé à une approche proposée récemment et utilisant le concept de matrices de transfert en parallèle a permis, dans une nouvelle approche basée sur les “mélanges de matériaux”, d’étudier les matériaux poreux macroscopiquement inhomogènes.

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47

Andre, Robert G. "Electromagnetic scattering analysis of a three dimensional inhomogeneous material body using the Finite Element Method /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487842372897921.

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48

Faget, Xavier. "Application expérimentale de méthodes inverses avancées pour l'imagerie des propriétés électromagnétiques d'un matériau magnéto-diélectrique." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0039/document.

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Cette thèse porte sur la caractérisation non destructive de structures 2D magnéto-diélectriques inhomogènes complexes. L’ensemble des étapes allant de l’expérience au traitement du problème inverse est traité. Dans un premier temps, un modèle direct reliant le champ diffusé aux propriétés électromagnétiques du matériau a été mis en place. Ce modèle requiert des calculs par éléments finis de la propagation de l’onde électromagnétique, en présence de l’objet observé lorsque celui-ci est positionné sur un support métallique. Une validation expérimentale a été réalisée via la mise en place d'un ba

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49

Valdez-Balderas, Daniel. "Models for inhomogeneities and thermal fluctuations in two-dimensional superconductors." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1180117179.

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50

Croizet, Didier. "Etude experimentale et numérique du comportement à haute température d'un nitrure de silicium." Paris, ENMP, 1992. http://www.theses.fr/1992ENMP0516.

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Le matériau céramique que nous avons étudié est un nitrure de silicium obtenu par frittage naturel. Ce matériau biphase est constitué d'une phase principale correspondant à une solution solide de type Sialon et d'une phase secondaire cristallisée en grenat d'yttrium et d'aluminium après traitement thermique post-frittage. Le premier point de cette étude concerne la caractérisation mécanique du matériau à haute température avec une attention toute particulière à 1250 C. A cet effet, des essais de flexion 4 points, de traction et de compression ont été réalisés en utilisant la technique du dip-t

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