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Rozprawy doktorskie na temat „Strain tensor”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 10 marca 2023

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1

Jacot, Benjamin (Benjamin Paul Emmanuel). "A strain tensor method for three-dimensional optimal Michell structures." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/104125.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 94-95).<br>In the design of discrete structures such as trusses and frames, important quantitative goals such as minimal weight or minimal compliance often dominate. Many numerical techniques exist to address these needs. However, a

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Rönnbrant, Anders. "Implementing a visualization tool for myocardial strain tensors." Thesis, Linköping University, Department of Biomedical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5173.

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<p>The heart is a complex three-dimensional structure with mechanical properties that are inhomogeneous, non-linear, time-variant and anisotropic. These properties affect major physiological factors within the heart, such as the pumping performance of the ventricles, the oxygen demand in the tissue and the distribution of coronary blood flow.</p><p>During the cardiac cycle the heart muscle tissue is deformed as a consequence of the active contraction of the muscle fibers and their relaxation respectively. A mapping of this deformation would give increased understanding of the mechanical proper

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Kellermann, David Conrad Mechanical &amp Manufacturing Engineering Faculty of Engineering UNSW. "Strongly orthotropic continuum mechanics." Publisher:University of New South Wales. Mechanical & Manufacturing Engineering, 2008. http://handle.unsw.edu.au/1959.4/41454.

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The principal contribution of this dissertation is a theory of Strongly Orthotropic Continuum Mechanics that is derived entirely from an assertion of geometric strain indeterminacy. Implementable into the finite element method, it can resolve widespread kinematic misrepresentations and offer unique and purportedly exact strain-induced energies by removing the assumptions of strain tensor symmetry. This continuum theory births the proposal of a new class of physical tensors described as the Intrinsic Field Tensors capable of generalising the response of most classical mechanical metrics, a numb

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Lundgren, Katarina. "Investigation of transmural cardiac and fiber strain in ischemic and non-ischemic tissue during diastole." Thesis, Linköping University, Department of Biomedical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7955.

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<p>The cardiac wall has complex three-dimensional fiber structures and mechanical properties that enable the heart to efficiently pump the blood through the body. By studying the myocardial strains induced during diastole, information about the pumping performance of the heart and what mechanisms that are responsible for this effective blood filling, can be achieved. Two different computation methods for myocardial strain, both based on data acquired from marker technique, were compared using a theoretical cylinder model. The non-homogeneous polynomial fitting method yielded higher accuracy th

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5

Kindberg, Katarina. "Regional Kinematics of the Heart: Investigation with Marker Tracking and with Phase Contrast Magnetic Resonance Imaging." Thesis, Linköping University, Department of Biomedical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1735.

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<p>The pumping performance of the heart is affected by the mechanical properties of the muscle fibre part of the cardiac wall, the myocardium. The myocardium has a complex structure, where muscle fibres have different orientations at different locations, and during the cardiac cycle, the myocardium undergoes large elastic deformations. Hence, myocardial strain pattern is complex. In this thesis work, a computation method for myocardial strain and a detailed map of myocardial transmural strain during the cardiac cycle are found by the use of surgically implanted metallic markers and beads. The

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6

Song, Min Jae. "Direct tensor expression by Eulerian approach for constitutive relations based on strain invariants in transversely isotropic green elasticity - finite extension and torsion." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1667.

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Sigfridsson, Andreas. "Multidimensional MRI of Myocardial Dynamics : Acquisition, Reconstruction and Visualization." Doctoral thesis, Linköpings universitet, Medicinsk informatik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-51489.

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Methods for measuring deformation and motion of the human heart in-vivo are crucial in the assessment of cardiac function. Applications ranging from basic physiological research, through early detection of disease to follow-up studies, all rely on the quality of the measurements of heart dynamics. This thesis presents new improved magnetic resonance imaging methods for acquisition, image reconstruction and visualization of cardiac motion and deformation.As the heart moves and changes shape during the acquisition, synchronization to the heart dynamics is necessary. Here, a method to resolve not

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8

Eissa, Leila. "Utilisation de méthodes de l'astrogéodésie et de la géodésie spatiale pour des études de déformations de l’écorce terrestre : représentations de déformations et de leur degré de signification par des tenseurs régulièrement répartis." Thesis, Paris Est, 2011. http://www.theses.fr/2011PEST1018/document.

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Les outils de la géodésie spatiale sont aujourd'hui très fortement impliqués dans les études géophysiques. Le champ de déformations horizontales d'un site d'étude est fourni par les vecteurs déplacement ou par un champ tensoriel. Ce dernier possède l'avantage d'être indépendant de tout référentiel, contrairement à ce qui est nécessaire pour exprimer les vecteurs vitesse. Néanmoins, les méthodes de calcul de tenseurs dépendent souvent d'une décomposition arbitraire en figures élémentaires à partir des points de mesures géodésiques. De plus, la représentation de ces tenseurs selon leurs axes pri

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9

ALBISETTI, A. FIGINI. "Structural and Thermodiffractometric Studies of Coordination Polymers Containing Ditopic Exobidentate Nitrogen Ligand." Doctoral thesis, Università degli Studi di Milano, 2008. http://hdl.handle.net/2434/57743.

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Zahradník, Martin. "Dynamic control of magnetization for spintronic applications studied by magneto-optical methods." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS155/document.

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Deux mécanismes importants reliant la préparation des couches ultraminces d’oxydes magnétiques à leurs propriétés physiques ont été étudiés dans ce travail. En premier lieu, l’influence de la contrainte épitaxiale sur les propriétés magnéto-optiques de la manganite La₂/₃Sr₁/₃MnO₃ (LSMO) a été étudiée. Les couches ultraminces ont été déposées par ablation laser pulsé sur quatre substrats différents, ce qui a fourni différentes valeurs statiques de la contrainte épitaxiale. Les propriétés magnétiques ont été révélées comme se détériorant avec l’augmentation de la contrainte, ce qui était prévisi

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11

Bot, Anna. "Rupture continentale oblique : évolution tectonique du Golfe de Californie (Basse californie du Sud) du Néogène à l'actuel." Thesis, Brest, 2016. http://www.theses.fr/2016BRES0050/document.

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Le Golfe de Californie (GOC) est un exemple de rift très oblique, au stade d'accrétion depuis 3,6 Ma au sud. La déformation continentale débute au Miocène dans un contexte arrière-arc, en relation avec la subduction de la plaque Pacifique sous la Plaque Nord-Américaine. L'objectif de cette thèse est de déterminer I'histoire de la déformation à I'origine de la rupture continentale ainsi que les phénomènes post-rupture. Cette étude utilise des données tectoniques, sismologiques et géomorphologiques sur la marge Ouest du GOC en Basse Californie du Sud. Elles sont calées temporellement par des dat

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Campbell, Katherine Gillian. "An investigation into strain within the patellar tendon." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12050/.

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Tendon injuries have, for many years, frustrated clinicians and patients alike due to their longevity and resistance to therapy. In recent years there has been good response in the extensor tendons of the lower limb to an intense painful eccentric exercise protocol. As yet there is no established reason known why a tendon should develop degeneration within its structure or why it should respond to the eccentric exercises. We do however know that, like bone, tendons are biologically active and rapidly adapt to the mechanical environment to which they are exposed. Recent investigations have reve

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13

Lam, Daniel F. "STRAIN CONCENTRATION AND TENSION DOMINATED STIFFENED AEROSPACE STRUCTURES." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1145393262.

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Avella, Charlotte Sinclair. "Strain related differential regulation of tendon extracellular matrix proteins." Thesis, Royal Veterinary College (University of London), 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.558956.

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15

Lister, Stephanie A. "Efficacy of tarsal immobilization to alleviate Achilles tendon strain in vivo - direct measurements via a differential variable reluctance transducer (DVRT) strain gauge in a canine model." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/744.

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16

Hess, Aaron. "Calculating 3D intramyocardial strain tensors in a single slice of myocardium using MRI." Master's thesis, University of Cape Town, 2006. http://hdl.handle.net/11427/3245.

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Includes bibliographical references (leaves 108-112).<br>Strain is a measure of cardiac deformation and provides information on the mechanical and functional properties of the heart. As this deformation occurs in three dimensions (3D), a 3D measure of strain is appropriate, however, currently the procedures for measuring 3D intramyocardial strain fields are limited to a handful of techniques. The only widely accepted method being the use of tagging in orthogonal image planes that requires the imaging of the entire myocardial volume, followed by lengthy and time consuming post processing. A met

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17

Li, Hongying. "Fiber tracking and fiber architecture description in cardiac DT-MRI." Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0125.

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La connaissance de l’architecture tridimensionnelle (3D) des fibres est cruciale dans la compréhension de la fonction du cœur humain. L’imagerie par résonance magnétique du tenseur de diffusion (IRM-DT) est une technique permettant de mesurer la diffusion des molécules d’eau dans des tissus humains, et donc d’étudier de manière non-invasive l’architecture 3D des fibres du cœur humain. Dans l’IRM-TD cardiaque, la tractographie des fibres est essentielle pour représenter et visualiser l’architecture des fibres, mais souvent utilisée qualitativement comme une dernière étape qui consiste à visuali

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18

Ohuegbe, Chyke Ihechikara. "Measurement of supraspinatus tendon strain ration with sonoelastography : an exploratory study." Thesis, University of Portsmouth, 2014. https://researchportal.port.ac.uk/portal/en/theses/measurement-of-supraspinatus-tendon-strain-ration-with-sonoelastography(61297ead-9fad-48b8-840a-d74880c2a37b).html.

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Purpose - The aim of this study was to measure the strain ratio of supraspinatus tendon, and assess the accuracy of sonoelastography when compared with grey-scale ultrasound in the diagnosis of supraspinatus tendinopathy in patients with shoulder pain. The findings were compared with clinical diagnosis and strain ratio results. Materials and Methods - The study was undertaken in three phases. In phase 1, 284 asymptomatic supraspinatus tendons of healthy volunteers were assessed by grey-scale ultrasound and sonoelastography to obtain baseline results which included strain ratio. In phase 2, 204

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19

Atalay, Ozgur. "Development and investigation of weft knitted strain sensor." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/development-and-investigation-of-weft-knitted-strain-sensor(54fffacb-d1d7-4e9e-9d8f-7f33d4b90d66).html.

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This thesis presents a study of the sensing properties exhibited by textile-based knitted strain sensors. Sensing fabrics were manufactured from silver-plated conductive nylon and non-conducting elastomeric yarns. The component yarns offered similar diameters, bending characteristics and surface friction, but their production parameters differed in respect of the yarn input tension, the number of conductive courses in the sensing structure and the elastomeric yarn extension characteristics. The knitted sensors were manufactured using flat-bed knitting technology, and electro-mechanical tests w

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Way, Louise. "The use of a novel miniature strain device to investigate the response of tendon cells to In vitro tensile strain." Thesis, University of Sheffield, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.574561.

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The aim of this work was to study the cell biology of tendons and their response to in vitro tensile strain with a view to elucidating how cells sense mechanical load and what changes occur to the cells in response. This work was done in order to provide some scientific background to aid the improvement of strategies for the treatment and prevention of tendon damage and develop appropriate methodologies related to the mechanical stimulation of tissue engineered tendons. A miniature cyclic straining device was designed (in collaboration with Electrical Engineering) which utilised a 50ml centrif

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21

Davis, Deborah D. "Strain rate effects on structure-property relationship in the rabbit patellar tendon." Master's thesis, Mississippi State : Mississippi State University, 2008. http://library.msstate.edu/etd/show.asp?etd=etd-08082008-152236.

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Vadlamani, Deepika. "Strain energy density based failure criterion for GFRP coupons under tension and bending." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5221.

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Thesis (M.S.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains xxii, 209 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 207-209).

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23

Günnel, Andreas, and Roland Herzog. "Optimal Control Problems in Finite-Strain Elasticity by Inner Pressure and Fiber Tension." Universitätsbibliothek Chemnitz, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-209295.

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Optimal control problems for finite-strain elasticity are considered. An inner pressure or an inner fiber tension is acting as a driving force. Such internal forces are typical, for instance, for the motion of heliotropic plants, and for muscle tissue. Non-standard objective functions relevant for elasticity problems are introduced. Optimality conditions are derived on a formal basis, and a limited-memory quasi-Newton algorithm for their solution is formulated in function space. Numerical experiments confirm the expected mesh-independent performance.

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Wu, Xiaoxia. "Effect of strain gradient on the nucleation of martensite in rod under tension /." View Abstract or Full-Text, 2003. http://library.ust.hk/cgi/db/thesis.pl?MECH%202003%20WU.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2003.<br>Includes bibliographical references (leaves 76-81). Also available in electronic version. Access restricted to campus users.

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Cardoso, Kelen Cristiane 1974. "Aplicação de técnicas ópticas de Moiré na determinação da distribuição de tensão e deformação em elementos de máquinas." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256802.

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Orientador: Inácio Maria Dal Fabbro<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agrícola<br>Made available in DSpace on 2018-08-22T14:06:58Z (GMT). No. of bitstreams: 1 Cardoso_KelenCristiane_M.pdf: 10447047 bytes, checksum: bd1de8c6f17c3f3f8e755c78ecee3801 (MD5) Previous issue date: 2013<br>Resumo: A determinação de tensões e deformações é amplamente empregada na engenharia. Métodos clássicos de extensometria elétrica, extensometria mecânica e simulações por elementos finitos são úteis e permitem qualificar e quantificar a distribuição de carga em

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Bartels, Peter Atwood. "Net section rupture in tension members with connection eccentricity." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1497.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains x, 101 p. : ill. (some col.) Includes abstract. Includes bibliographical references (p. 77-80).

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Dunford, Kristin Marie. "Effect of Postmortem Time and Preservation Fluid on the Tensile Material Properties of Bovine Liver Parenchyma." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/90179.

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The liver is one of the most frequently injured abdominal organs in motor vehicle collisions. Although previous studies have quantified the tensile failure properties of human liver parenchyma at 48hrs postmortem, it is currently unknown how the material properties change between time of death and 48hrs postmortem. Therefore, the purpose of this study was to quantify the effects of postmortem degradation on the tensile material properties of bovine liver parenchyma when stored in DMEM or saline. Fourteen fresh bovine livers were obtained from a local slaughter house and stored in either DMEM o

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Arble, Jessica R. "An Examination of the LG/J Murine Strain as a Model of Tendon Regeneration." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1460730232.

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Kemper, Andrew Robb. "Material Properties of Human Rib Cortical Bone from Dynamic Tension Coupon Testing." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/43709.

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The purpose of this study was to develop material properties of human rib cortical bone using dynamic tension coupon testing. This study presents 117 human rib cortical bone coupon tests from six cadavers, three male and three female, ranging in age from 18 to 67 years old. The rib sections were taken from the anterior, lateral, and posterior regions on ribs 1 through 12 of each cadaver's rib cage. The cortical bone was isolated from each rib section with a low speed diamond saw, and milled into dog bone shaped tension coupons using a small computer numerical control machine. A high-rate s

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Guenther, Cristy Louise. "Evaluation of shear and diagonal tension in plain concrete." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1400964851&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Whitezell, Marc A. "Development of a Strain Energy Storage Mechanism Using Tension Elements to Enhance Golf Club Performance." Diss., CLICK HERE for online access, 2006. http://contentdm.lib.byu.edu/ETD/image/etd1258.pdf.

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Sandora, Normalina. "Regeneration of decellularised tendon by human mesenchymal stem cells in response to uniaxial tensile strain." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/16429/.

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Injury of ligaments is very common, and a total tear of the anterior cruciate ligament (ACL) demands replacement. Ideally, a graft for ligament replacement should be able to regenerate into a native like ligament, and restore physiological and anatomical function immediately after transplantation. The University of Leeds has developed a protocol to generate an acellular tendon scaffold derived from allograft/ xenograft using decellularisation technology. The aims of the study were to study the differentiation of human bone marrow derived multipotential stromal cells (BM-MSC) seeded onto the de

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Youssef, Nivine T. M. "Dynamic surface tension and strain rate dependent viscosity : material characterization using free surface oscillating jets /." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488192447428292.

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Abul-Hamayel, Ismat A. A. 1960. "MOMENT ROTATION CURVES FOR TOP AND SEAT CONNECTIONS (STATIC LOADING, TENSION)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/291311.

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Cai, Yang. "High Tension without War: Interpreting Taiwan Strait Relations from 1990 to 2005." Digital Archive @ GSU, 2006. http://digitalarchive.gsu.edu/political_science_theses/5.

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This study interprets the puzzling absence of war among the US, China, and Taiwan from 1990 to 2005, when identity politics across the Taiwan Strait caused high tensions. The application of realist constructivism theory to this case would produce a prediction of war there resulting from conflicting identities, which produce irreconcilable conflicts of interests over territorial claims. However, the application of four other, relevant international relations theories explains this absence of war during this period. A zero-sum game of competing identities was replaced by a positive-game resultin

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Gao, Liang. "Ultrasound Elasticity Imaging of Human Posterior Tibial Tendon." Diss., The University of Arizona, 2014. http://hdl.handle.net/10150/338897.

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Posterior tibial tendon dysfunction (PTTD) is a common degenerative condition leading to a severe impairment of gait. There is currently no effective method to determine whether a patient with advanced PTTD would benefit from several months of bracing and physical therapy or ultimately require surgery. Tendon degeneration is closely associated with irreversible degradation of its collagen structure, leading to changes to its mechanical properties. If these properties could be monitored in vivo, it could be used to quantify the severity of tendonosis and help determine the appropriate treatment

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Brown, Phillip G. M. "2D ultrasound elastography as a functional measure of healing of the Achilles tendon in vivo." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e2d0a97e-d557-4b5a-869a-36cbd33b9994.

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The Achilles tendon is the largest tendon in the human body, which elastically stores and releases energy to facilitate walking and running. Tendons can suffer from a range of pathologies, most notably that of complete rupture, which affects athletes, physically active workers and the aged. There is a growing demand for in vivo methods of objectively measuring tendon health for aiding diagnosis, monitoring therapy and for assessment of new treatments. Knowledge of the changes in mechanical properties during the healing process is also limited and new methods to accurately and consistently esti

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Gonzalez, Lisa. "Investigation of the shear lag coefficient for welded tension members." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/45973.

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<p>Shear lag is a non-uniform distribution of stress resulting when all cross sectional elements are not directly connected. This phenomenon renders the cross section only partially effective in resisting tensile loads. In this investigation, both experimental and analytical studies were conducted to ascertain the shear lag coefficients to be used in design of welded tension members by the AISC Specifications [1989].</p> <p>Four types of specimens (angles, plates, channels, and tees), were tested, each with three weld configurations (longitudinal welds only, transverse welds only, and a combin

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Karlsson, Patrik. "Determination of viscoelastic properties of adhesives." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-35521.

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A research project at Linnaeus University focuses on optimizing theadhesives joints between wood and glass, with the aim of obtain stiffcomponents that can act as a load and stabilizing elements and still betransparent. But there is, however, still a lack of knowledge regarding theadhesive materials which need to be further investigated. This thesis focused on testing six different adhesives in relaxation and todetermine the viscosity (η) and modulus of elastic (MOE, E). Viscosity andMOE are then used in combination in a standard linear solid model (SLS)describing the viscoelasticity mathemati

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Geremia, Jeam Marcel. "Ruptura total do tendão de Aquiles : propriedades mecânicas tendíneas em indivíduos submetidos a diferentes protocolos de reabilitação." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/40435.

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Introdução. Rupturas agudas do tendão de Aquiles afetam as propriedades mecânicas tendíneas. Estudos vêm preconizando o uso de mobilização precoce (tratamento acelerado) para evitar grandes prejuízos tendíneos. Entretanto, estudos que avaliem as propriedades mecânicas do tendão de Aquiles de humanos após ruptura total, submetidos à mobilização precoce, não foram encontrados na literatura específica da área. Objetivo: comparar as propriedades mecânicas e morfológicas do tendão de Aquiles entre pacientes submetidos a tratamento conservador e pacientes submetidos a tratamento acelerado (mobilizaç

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Santos, André Pereira dos. "Strain effect on the properties of K0.5Na0.5NbO3 films." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22592.

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Mestrado em Engenharia de Materiais<br>Este trabalho é sobre materiais cerâmicos isentos de chumbo destinados a aplicações electromecânicas e candidatos à substituição de electrocerâmicos à base de chumbo. O titanato zirconato de chumbo (PZT) é o cerâmico piezoeléctrico mais utilizado em todo o mundo. No entanto, contém mais de 60 % de chumbo que é um elemento tóxico para os seres humanos e para o ambiente. Em 2003, a União Europeia aprovou uma directiva que proíbe e restringe o uso de elementos potencialmente perigosos, tais como o chumbo. Devido à inexistência de materiais aptos para a subs

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SCHANTZ, ERIC J. "A NEW DYNAMIC CULTURE SYSTEM DESIGNED TO PROVIDE CONTROLLED STRAIN TO CELL SEEDED COLLAGEN CONSTRUCTS FOR TENDON REPAIR." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin992533611.

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Deshpande, Yogesh. "Quasi-static and Dynamic Mechanical Response of T800/F3900 Composite in Tension and Shear." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1525276843674052.

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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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Kemper, Andrew Robb. "The Biomechanics of Thoracic Skeletal Response." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/37635.

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The National Highway Traffic Safety Administration (NHTSA) reported that in 2008 there were a total of 37,261 automotive related fatalities, 26,689 of which were vehicle occupants. It has been reported that in automotive collisions chest injuries rank second only to head injuries in overall number of fatalities and serious injuries. In frontal collisions, chest injuries constitute 37.6% of all AIS 3+ injuries, 46.3% of all AIS 4+ injuries, and 43.3% of all AIS 5+ injuries. In side impact collisions, it has been reported that thoracic injuries are the most common type of serious injury (AISâ

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Cai, Yang. "High tension without war [electronic resource] : interpreting Taiwan Strait relations from 1990 to 2005 /." unrestricted, 2005. http://etd.gsu.edu/theses/available/etd-11182005-221708/.

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Thesis (M.A.)--Georgia State University, 2005.<br>Title from title screen. Henry F. Carey, committee chair; Kim Reimann, William Downs, committee members Electronic text (84 p.) : digital, PDF file. Description based on contents viewed Apr. 30, 2007. Includes bibliographical references (p. 73-82).

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Kersauson, Malo de. "Vers un laser germanium dopé N et contraint en tension." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112107/document.

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Dans ce travail de thèse, nous avons étudié différentes approches qui devraient permettre d’obtenir l’effet laser dans le germanium. Nous avons pu montrer expérimentalement l’influence du dopage et de la déformation sur la structure de bande du germanium, et l’adéquation avec les modèles concluants à l’existence de gain. Nous avons exploré les possibilités offertes par l’hétéro-épitaxie sur III-V pour obtenir une déformation en tension du germanium. Nous avons évalué la déformation résultante par des mesures croisées de rayons X, de diffusion Raman et de photoluminescence, et étudié l’évolutio

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Röder, Christian. "Strain, charge carriers, and phonon polaritons in wurtzite GaN - a Raman spectroscopical view." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2015. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-173073.

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Die vorliegende Dissertation befasst sich mit der ramanspektroskopischen Charakterisierung von Galliumnitrid (GaN). Der Zusammenhang zwischen Waferkrümmung und mechanischer Restspannungen wird diskutiert. Mit Hilfe konfokaler Mikro-Ramanmessungen wurden Dotierprofile nachgewiesen sowie die Ladungsträgerkonzentration und -beweglichkeit ermittelt. Sämtliche Ramantensorelemente von wz-GaN wurden erstmals durch die Anwendung verschiedener Streugeometrien bestimmt. Eine neu entwickelte Vorwärtsstreuanordnung ermöglichte die Beobachtung von Phonon-Polaritonen. Es konnte gezeigt werden, dass von der

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Kojima, Alberto Noriyuki [UNESP]. "Extensometria: avaliação de implantes de sextavado externo posicionados na configuração linear e compensada (offset), sob carregamento axial." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/105530.

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Made available in DSpace on 2014-06-11T19:35:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-07-07Bitstream added on 2014-06-13T20:25:48Z : No. of bitstreams: 1 kojima_an_dr_sjc.pdf: 500670 bytes, checksum: 06c2a32f2d0fe96b743e1f05b9e95270 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O objetivo deste estudo foi avaliar, por meio da extensometria, a distribuição de tensões ao redor de implantes em função dos diferentes locais para carregamento, tipo de coifa (plástica ou usinada) e configuração (linear e compensada). Para tanto, em um bloco de poli

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Saito, Edson Hiroshi. "Medição de tensões em componentes mecânicos utilizando a técnica ESPI." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263913.

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Orientador: Auteliano Antunes dos Santos Junior<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica<br>Made available in DSpace on 2018-08-16T17:18:43Z (GMT). No. of bitstreams: 1 Saito_EdsonHiroshi_M.pdf: 2483546 bytes, checksum: f0889b176e6cc7896851b8620c53c361 (MD5) Previous issue date: 2010<br>Resumo: A técnica ESPI, sigla em inglês - Electronic Speckle Pattern Interferometry -, ou ainda, Interferometria Eletrônica por Padrão de Speckle, surgiu em conseqüência do desenvolvimento da metrologia a laser, que possui como característica o chamado ef

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