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Rozprawy doktorskie na temat „Strain”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Koob, Christopher E. "High temperature fiber optic strain sensing." Thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-02132009-171339/.

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Chen, Yuejian. "High-strain, high-strain-rate deformation of tantalum /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1998. http://wwwlib.umi.com/cr/ucsd/fullcit?p9828890.

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3

Gosling, T. J. "Strain relaxation via dislocation formation in strained semiconductor structures." Thesis, University of Bath, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387390.

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4

Pani´c, Nebojsa. "High strain rate-induced failure in steels at high shear strains." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0006/MQ45106.pdf.

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5

Julian, Michael Robert. "Material characterization of viscoelastic polymeric molding compounds." Connect to resource, 1994. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1137616726.

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Thesis (M.S.)--Ohio State University, 1994.<br>Advisors: Vernal H. Kenner and Carl H. Popelar, Dept. of Engineering Mechanics. Includes bibliographical references (leaf 106). Available online via OhioLINK's ETD Center

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6

Smith, Byron L. "Mean strain effects on the strain life fatigue curve." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA267211.

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7

Larour, Patrick [Verfasser]. "Strain rate sensitivity of automotive sheet steels: influence of plastic strain, strain rate, temperature, microstructure, bake hardening and pre-strain / vorgelegt von Patrick Larour." Aachen : Shaker, 2010. http://d-nb.info/1007085649/34.

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8

Javornik, Ana. "Tissue velocity, strain und strain rate bei Hunden mit Mitralklappenendokardiose." Diss., [S.l.] : [s.n.], 2007. http://edoc.ub.uni-muenchen.de/archive/00007454.

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9

Barraclough, Thomas William. "Strain softening and strain localisation in irreversible deformation of snow." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/16218.

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The aim of this work was to visualise heterogeneous deformation in snow under controlled laboratory conditions. Heterogeneous deformation was observed for both homogenous and heterogeneous loading conditions. Understanding deformation of snow is important in many scientific fields including vehicle traction, avalanche forecasting, and winter sports. This thesis investigates the deformation behaviour of snow on the centimetre scale under moderate strain rates (0.005 to 0.1 s-1) when subject to one-dimensional compression or to indentation. In order to allow controlled and repeatable snow deform

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10

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

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A Thesis Submitted Towards the Partial Fulfilment Degree of Master of Technology (M.Tech.) FACULTY OF ENGINEERING MECHANICAL ENGINEERING DEPARTMENT Cape Peninsula University of Technology 2011<br>The split Hopkinson pressure bar (SHPB) test is the most commonly used method for determining material properties at high rates of strain. The theory governing the specifics of Hopkinson bar testing has been around for decades; however, it has only been for the last decade or so that significant data processing advancements have been made. It is the intent of this thesis to offer the insight of applic

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11

Yao, Shulong. "Highly Stretchable Miniature Strain Sensor for Large Dynamic Strain Measurement." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849674/.

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This thesis aims to develop a new type of highly stretchable strain sensor to measure large deformation of a specimen subjected to dynamic loading. The sensor was based on the piezo-resistive response of carbon nanotube(CNT)/polydimethysiloxane (PDMS) composites thin films, some nickel particles were added into the sensor composite to improve the sensor performance. The piezo-resistive response of CNT composite gives high frequency response in strain measurement, while the ultra-soft PDMS matrix provides high flexibility and ductility for large strain measuring large strain (up to 26%) with an

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12

Clark, Craig B. "Strain and strain rate regulation of skeletal muscle in vitro /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2000. http://wwwlib.umi.com/cr/ucsd/fullcit?p9970679.

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13

Askling, Carl. "Hamstring muscle strain." Doctoral thesis, Swedish School of Sport and Health Sciences, GIH, Laboratory for Biomechanics and Motor Control, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-425.

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<p>Background: Acute hamstring strains are common injuries in different sports. They are often serious, causing long rehabilitation times and a proneness for re-injury. Preliminary observations indicate that the injuries can be of at least two types, one occurring during high-speed running and the other during motions where the hamstring muscles reach extreme lengths.</p><p>Aims: To investigate the possible existence of different types of acute hamstring strains in two specific athletic groups, namely sprinters and dancers, as well as the generality of these findings in other sports.</p><p>Met

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14

Liu, Min. "A Three-Dimensional Hyper-Viscoelasticity Constitutive Model for the Dynamic Response of Rubber." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1185546966.

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15

Ahmed, Shamheed. "Small strain behaviour of sand under triaxial and plane strain conditions." Thesis, University of Leeds, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.436380.

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16

Zhou, Qing 1964. "Analysis of plane strain necking and fracture in strain hardening materials." Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/11636.

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17

McKnight, Nathan L. "Strain and strain rate mechanotransduction in human vascular smooth muscle cells /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2002. http://wwwlib.umi.com/cr/ucsd/fullcit?p3076345.

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18

Janezic, Sandra, Valerija Zidaric, Bart Pardon, et al. "International Clostridium difficile animal strain collection and large diversity of animal associated strains." BioMed Central, 2014. http://hdl.handle.net/10150/610058.

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BACKGROUND:Clostridium difficile is an important cause of intestinal infections in some animal species and animals might be a reservoir for community associated human infections. Here we describe a collection of animal associated C. difficile strains from 12 countries based on inclusion criteria of one strain (PCR ribotype) per animal species per laboratory.RESULTS:Altogether 112 isolates were collected and distributed into 38 PCR ribotypes with agarose based approach and 50 PCR ribotypes with sequencer based approach. Four PCR ribotypes were most prevalent in terms of number of isolates as we

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19

Cai, Jing. "Properties of heterogeneous energetic materials under high strain, high strain rate deformation." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2007. http://wwwlib.umi.com/cr/ucsd/fullcit?p3274695.

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Thesis (Ph. D.)--University of California, San Diego, 2007.<br>Title from first page of PDF file (viewed October 2, 2007). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 161-172).

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20

Alinaghian, Yaser. "The Effect of Pre-strain and Strain Path Changes on Ductile Fracture." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23917.

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Industrial metal forming operations generally require several deformation steps in order to create the final product. The mechanical behavior of materials undergoing strain path changes can be very different from those deformed in a given direction to fracture. The work presented here employed laser drilled model materials to better understand the effect of pre-strains and strain path changes on void growth and linkage leading to fracture is studied. The experimental results show that increasing pre-strain results in faster void growth which was justified in terms work hardening rate in the s

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21

Shim, JongMin 1975. "Finite strain behavior of polyurea for a wide range of strain rates." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/58458.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, February 2010.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 101-112).<br>Polyurea is a special type of elastomer that features fast setting time as well as good chemical and fire resistance. It has also good mechanical properties such as its high toughness-to-density ratio and high strain rate-sensitivity, so its application is recently extended to structural purpose to form sandwich-type or multi-layered plates. Those structures can be used for retrofitt

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22

Ouyang, Xin. "CONSTITUTIVE EQUATIONS OF RUBBER UNDER LARGE TENSILE STRAIN AND HIGH STRAIN RATES." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1154146622.

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23

Episcopo, Val. "Strain and weight change." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2009. http://wwwlib.umi.com/cr/syr/main.

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24

Valnes, Lars Magnus. "Accumulated Plastic Strain Program." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for fysikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-26981.

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In this thesis we will look at the implementation and results of the APS program. The program computes the accumulated plastic strain in a umbilical tube for the deformations axial tension, bending and internal pressure. The computation is based on solving incremental problems with the finite element method and the return-mapping algorithm. The return-mapping algorithm encountered convergence failure for large strain increments, this was solved by using the strain increment of $1.0e\sp{-4}\%$.The implementation of axial tension and bending was consistent with the results provided by Nexans Nor

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25

Li, Wenbin Ph D. Massachusetts Institute of Technology. "High Deviatoric Strain Engineering/." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98734.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Materials Science and Engineering, 2015.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 157-171).<br>The structure of a material can be tuned reversibly or irreversibly by imposing elastic or inelastic strain, leading to change of properties. This defines the concept of strain engineering, which includes both elastic strain engineering (ESE) and inelastic strain engineering (ISE). In this thesis, we study ESE and ISE by deviatoric (nonhydrostatic) strain. For ESE, we model how impositio

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26

Lin, Charrissa Y. "Strain actuated aeroelastic control." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/47318.

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27

Breland, Adrienne E. "A supervised strain classifier." abstract and full text PDF (free order & download UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1453199.

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28

Smith, Daniel Henlee. "Imposing Cyclic Strain on Osteogenic Stem Cells: The Effects of Strain Levels and Repetition of Cyclic Strain in an Implant Environment." MSSTATE, 2004. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11112004-132423/.

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Bone and bone cells have been shown to respond to mechanical forces placed upon them. Particularly, strain plays an important role in osteogenic differentiation of marrow cells around artificial implants in bone. These strains, depending on their magnitude, duration, and repetition, can alter the proliferation and matrix synthesis of osteoblasts. To test how strain parameters influence osteoblast behavior, a four-point bending apparatus was used to impose cyclic strain on osteogenic stem cells isolated from rats and seeded on titanium plates. Cells were stimulated at 1 Hz for 15 minutes daily

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29

Fernandez, Lorences Jose O. "Crystallinity changes in PET and Nylon 11 with strain, strain rate and temperature." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/32894.

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The mechanical properties of PET (widely used in bottles and synthetic fibres) and Nylon 11 (also used in the fabrication of synthetic fibres) were studied over several decades of strain rate at different temperatures in an effort to provide a more complete description of these materials behaviour. Processing techniques can be improved if such information is available. Tests were carried out using a conventional Hounsfield machine and two in-house-developed dropweight and a cross bow systems from 10°C to 200°C. The three systems enable true stress vs. true strain curves to be calculated.

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30

Johnson, Timothy Michael. "Strain Monitoring of Carbon Fiber Composite with Embedded Nickel Nano-Composite Strain Gage." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2622.

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Carbon fiber reinforced plastic (CFRP) composites have extensive value in the aerospace, defense, sporting goods, and high performance automobile industries. These composites have huge benefits including high strength to weight ratios and the ability to tailor their properties. A significant issue with carbon fiber composites is the potential for catastrophic fatigue failure. To better understand this fatigue, there is first a huge push to measure strain accurately and in-situ to monitor carbon fiber composites. In this paper, piezoresistive nickel nanostrand (NiNs) nanocomposites were embedde

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31

Zaroulis, John Spyros. "Temperature, strain rate and strain state dependence of evolution of mechanical behavior and structure of poly(ethylene-terephthalate) with finite strain deformation." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11251.

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Turner, Jody Lee. "The Effect of Strain Path on Strain Induced Precipitation in a Model Microalloyed Steel." Thesis, University of Sheffield, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.511959.

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33

Wu, Xingdong. "Onset, propagation, and evolution of strain localization in undrained plane strain experiments on clay." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32548.

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Master of Science<br>Civil Engineering<br>Dunja Peric<br>The conventional triaxial test is the primary laboratory test for determining the shear strength of soils. Geotechnical field conditions such as long earth dams, long embankments, long retaining walls, strip foundations, tunnels, and buried pipelines often experience plane strain states of stress. However, stress strain and load deformation responses in plane strain loading differ considerably from responses observed in the conventional triaxial test. Research has shown that soils loaded in a plane strain state are far more sensitive to

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34

Trausch-Giudici, Jolanda Luisa. "Stress-strain characterisation of seebodenlehm /." Zürich : IGT, Division of Geotechnical Engineering : vdf, Hochschulverlag AG an der ETH Zürich, 2004. http://opac.nebis.ch/cgi-bin/showAbstract.pl?u20=3728130036.

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35

Bråmå, Erik. "Strain Energy of Bézier Surfaces." Thesis, Linköpings universitet, Matematik och tillämpad matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-145645.

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Bézier curves and surfaces are used to great success in computer-aided design and finite element modelling, among other things, due to their tendency of being mathematically convenient to use. This thesis explores the different properties that make Bézier surfaces the strong tool that it is. This requires a closer look at Bernstein polynomials and the de Castiljau algorithm. To illustrate some of these properties, the strain energy of a Bézier surface is calculated. This demands an understanding of what a surface is, which is why this thesis also covers some elementary theory regarding paramet

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36

Colson, Harry George. "Strain relaxation in semiconductor heterostructures." Thesis, University of Surrey, 1997. http://epubs.surrey.ac.uk/843607/.

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The strain relaxation behaviour of and oriented InxGa1-xAs layers grown on GaAs substrates has been investigated using surface profilometry and high resolution X-ray diffraction. The strain relaxation behaviour of single InxGa1-xAs layers (grown by various methods) has been studied using double crystal X-ray diffraction. The layer strain has been shown to be predictable, following the empirical relaxation law given by epsilonr = k/d where epsilonr is the residual strain, d is the layer thickness and k is a constant (= 0.84 nm +/- 0.18 nm). In addition, it is shown, using previously published d

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37

Blackman, Lois. "Strain differentiation of Yersinia pestis." Thesis, University of Leicester, 2001. http://hdl.handle.net/2381/29822.

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Verification procedures are required to ensure compliance with the Biological and Toxins Weapons Convention (BTWC). Strain differentiation analysis may need to be performed on samples that do not harbour live bacteria and may contain other microorganisms. Thus the method employed must be non-culture based and specific to the bacterial species. Three Polymerase Chain Reaction (PCR) based assays were evaluated for their potential to specifically differentiate strains of Yersinia pestis. Two of the techniques, Insertion Sequence - Flanking Region Amplification PCR (IS-FRAP) and Variable Number of

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38

Wan, Margaret. "Assessment of occupational heat strain." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001661.

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Kageson-Loe, Nils Michael. "The strain behaviour of chalk." Thesis, Imperial College London, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309215.

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40

Downes, James R. "Strain relaxation in semiconductor devices." Thesis, University of Surrey, 1995. http://epubs.surrey.ac.uk/773021/.

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Strained layers are incorporated into many electronic devices and particularly into semiconductor lasers. These strained layers can relax, both elastically and plastically, which often impairs the performance of the device. This thesis presents several methods for calculating elastic strain relaxation: a Fourierseries method for stresses imposed on the surfaces of a rectangular block; a Fourier-integral for stress imposed on the surfaces of an infinite layer; and a Green-function method for the stress field about buried inclusions. The methods are used to calculate the strain distributions in

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41

Allsop, Thomas David Paul. "A fibre optical strain sensor." Thesis, University of Plymouth, 1999. http://hdl.handle.net/10026.1/2779.

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Strain-sensing elements, fabricated in standard communications-grade single mode optical fibre, are increasingly being considered for application in structural health monitoring. The reason for this is the numerous advantages demonstrated by these devices compared with traditional indicators. This thesis describes work carried out on optical sensors at the University of Plymouth. The aim of this work was to achieve an optical fibre strain sensing system capable of measuring absolute strain with good resolution and having wide dynamic range, without bulky optical equipment and not susceptible t

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42

Wang, Duan Qiang. "Strain measurement using neutron diffraction." Thesis, Open University, 1996. http://oro.open.ac.uk/57651/.

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This thesis contains a study of improvement and application of strain measurement technique using neutron diffraction. A dedicated neutron strain scanner - ENGIN, funded by Ee. has been developed at ISIS. It has two radial collimators, allowing for the first time, measurements taken simultaneously at two orthogonal directions; uses Pawley refinement permitting both whole pattern and individual peak profile analysis and its positioner allow's specimens weighing 250 kg to be placed with an accuracy of 100 um. Strain measurement using neutron diffraction has been investigated under two extreme ci

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43

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

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Several aspects of the stress-strain behaviour of rubber, important for evaluating its properties for finite element analysis and engineering applications, are investigated. Measurements of the deformation behaviour of an elastomer containing a compressible filler are used to assess theoretical equations for the compression modulus of rubber pads bonded to rigid endplates. The volume fraction of filler is estimated from a simple model. The first cycle stress-strain behaviour of filled and unfilled rubbers is characterised from uniaxial tests and by measuring both non-zero principal stresses wi

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44

Wang, Yao. "MOSFET strain sensor for microcantilevers." Thesis, Queen's University Belfast, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.675436.

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Microcantilever structure was used to design and fabricate strain sensors. P-channel MOSFETs were designed and fabricated for strain sensors as hole mobility under uniaxial stress has higher mobility enhancement than that of electron mobility under either uniaxial stress or biaxial stress. For MOSFET sensors on microcantilevers, anchor area is the traditional position for sensors due to its highest stress. The aim of this research is to investigate the assumption of biaxial stress at the anchor area which makes the anchor location less sensitive. COMSOL software was employed to simulate stress

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45

Gard, Gunvor. "Physical and psychosocial occupational strain." Doctoral thesis, Luleå tekniska universitet, Hälsa och rehabilitering, 1990. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17034.

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This monography thesis is based on five empirical studies of physical and psychosocial occupational strain in working life. The first three studies concern the working environment of crane couplers. The first study, a questionnaire study, showed that monotonous postures and movements, heavy lifting and long walking distances were common reasons for regarding crane coupling as a physically strenuous work. The second study, a medical study, showed that clinical findings were more prevalent in the right neck- and shoulder region. The third study, an electromyographic study showed that the physica

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46

Aoki, Yohko. "Strain transducers for active control." Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/66297/.

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This thesis presents the results of a theoretical and experimental study of active vibration control using velocity feedback with piezoceramic actuator(s) and closely located velocity sensor(s). The first part of the thesis presents modeling and design studies for a square piezoceramic actuator used to implement a single channel velocity feedback control with a velocity sensor at its center. A fully coupled mobility model of the panel with a square piezoceramic patch actuator is introduced and experimentally validated in order to predict the sensor-actuator open loop response over much wider f

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47

Andrews, Jeffrey Pratt. "Longitudinal misalignment based strain sensor." Thesis, Virginia Tech, 1989. http://hdl.handle.net/10919/43283.

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<p>A practical fiber optic strain sensor has been developed to measure strains in the range of 0.0 to 2.0 percent strain with a resolution ranging between 10 and 100 microstrain depending on sensor design choices. This intensity based sensor measures strain by monitoring strain induced longitudinal misalignment in a novel fiber interconnection. This interconnection is created by aligning fibers within a segment of hollow core fiber. Related splice loss mechanisms are investigated for their effect on resolution. The effect of gauge length and launch conditions are also investigated.</p><br>Mast

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48

Guo, Jun. "Mechanical Amplified Capacitive Strain Sensor." Case Western Reserve University School of Graduate Studies / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=case1175876717.

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Raynolds, James E. "Strain-induced birefringence in GaAs /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487859879941051.

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50

Fallon, Richard W. "Fibre Bragg grating strain sensors." Thesis, Aston University, 2000. http://publications.aston.ac.uk/15304/.

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The fabrication of in-fibre Bragg gratings (FBGs) and their application as sensors is reported. The strain and temperature characteristic results for a number of chirped and uniform gratings written into three different host fibres are presented. The static and dynamic temperature response of a commercially available temperature compensated grating is reported. A five sensor wavelength division multiplexed fibre Bragg grating strain measurement system with an interrogation rate of 25 Hz and resolution of 10 was constructed. The results from this system are presented. A novel chirped FBG interr

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