Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"elastic interactions"”.
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Elastic interactions of cellular force patterns
Gewebezellen sammeln ständig Informationen über die mechanischen Eigenschaften ihrer Umgebung, indem sie aktiv an dieser ziehen. Diese Kräfte werden an Zell-Matrix-Kontakten übertragen, die als Mechanosensoren fungieren. Jüngste Experimente mit Zellen auf elastischen Substraten zeigen, dass Zellen …
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Magneto-Elastic Interactions in a Cracked Ferromagnetic Body
… study. The model considers a soft magnetic ferroelastic body and incorporates a realistic (nonlinear) susceptibility. A moving crack is present in the body and is propagating in a direction perpendicular to the magnetic field. Assuming that the processes in the moving coordinates are stationary, …
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Neutrino-nucleus neutral current elastic interactions measurement in MiniBooNE
… of events up to date, such as neutral current elastic (NCE), neutral current pi^0, charged current quasi-elastic (CCQE), charged current pi^+, and other channels. These measured cross-sections, in turn, allow to improve the knowledge of nucleon structure. This thesis is devoted to the study of …
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Magnetic and Elastic Interactions at Cracks and Interfaces in Ferromagnetic Materials
… for some nondestructive evaluation techniques, interactions between magnetic fields and defects in solids may also alter material properties. To explore this possibility, Maxwell's equations were coupled with a continuum mechanics model for elastic strain to formulate analytical expressions for …
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On the collective model of glasses at low temperature
… with the experimental data. The importance of elastic interactions as a possible solution to these problems is emphasised and several simple models are introduced. The question of the importance of interactions at long lengthscale is discussed using a renormalization group approach.
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Dislocation -Obstacle Interactions in Aluminum Alloys
… examines two types of dislocation-obstacle interactions: dislocation-particle interactions during creep deformation, and dislocation-loop interactions during deformation at room temperature. Dislocation-particle interaction studies in Al-Zn-Mg-Cu-Zr, Al-4Mg-0.3Sc, and Al-0.3Sc showed that …
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Hydrogen-enhanced transient creep of 310S and AL 29-4-2 stainless steel
… clear evidence of hydrogen-enhanced plasticity. Elastic interactions between hydrogen atmospheres and moving dislocations were used to explain the observed phenomenon. Hydrogen-enhancement and localization of plasticity have been cited as fundamental causes of hydrogen embrittlement. The …
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Investigation of infinite-dimensional dynamical system models applicable to granular flows
… Hamiltonian dynamical systems for perfectly elastic interactions in the case of one space dimension, but the well-posedness question of these systems is at least partially answered for the first time here. In particular, dynamical systems of the BSR type are proven to be well posed under mild …
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Plasticity as a depinning phase transition
… within their glide plane due to long-range elastic interactions and the material exhibits plastic response. Above this critical stress the dislocations are mobile (the depinned/ unjammed phase) and the material constantly ows. We employ discrete dislocation dynamics to resolve the temporal …
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Design and flow characterization of an indraft supersonic wind tunnel for scramjet testing
… layer interaction, and aero-thermo-elastic interactions in scramjet vehicles. An indraft-type tunnel was chosen for its simplicity, low capital investment, and low power requirement. Its main features are large windows for advanced optical flow diagnostics, modular experimental …
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Defects and Rearrangements in Disordered Solids
… disordered solids. This method augments particle interactions with an artificial potential that acts as a high-pass filter: it preserves small-scale structures while pushing extended vibrational modes to higher frequencies. The low-frequency modes that remain are ``bare" defects; they are …
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A Study of the Kinetics of Phase Separation in a Nickel-12.5 at.percent Silicon Alloy
… 000 peak (SANS) is attributed to the presence of elastic interactions, short range in nature.
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Bio-inspired composites : a de novo approach to the conceptualization, design and synthesis of tough mesoscale structures with simple building blocks
… Furthermore, a detailed study of the basic interactions between constituents phases in a composite lead to fundamental insights of elastic interactions and stiffness ratios as controlling elements of the fracture mechanical behavior of composite systems. Tuning the linear elastic …
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A Model of the Production of Spontaneous Otoacoustic Emissions in the Tokay Gecko
… be measured externally. Here, we suggest that interactions between tonotopically arranged hair cells play a critical role in the formation of spontaneous otoacoustic emissions. We have created a model based on the basilar papilla of the tokay gecko, a species notable both for the unusual …
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Einfluß der magnetischen Ordnung auf Supraleitung und Kristallstruktur in Seltenerd-Nickel-Borkarbid-Verbindungen
… type of the R3+ ions indicate that the magneto-elastic interactions are determined by crystal-field effects. This fact also facilitates the elucidation of the magnetic phase diagrams by neutron diffraction experiments in external magnetic fields. For a given phase, absence or presence of …
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A Multi-Scale CFD Analysis of Patient-Specific Geometries to Tailor LVAD Cannula Implantation Under Pulsatile Flow Conditions: an investigation aimed at reducing stroke incidence in LVADs
… Thrombi were modeled as spheres with perfectly elastic interactions numerically released randomly in time and space at cannula inlet plane. Based on clinical observation of the range of thrombus sizes encountered in such cases, particle diameters of 2.5mm and 3.5mm were investigated in our …
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A multiscale study on the origins of the Portevin-Le Chatelier effect in polycrystalline nickel-based superalloys
… diffusion of solute to dislocations, driven by elastic interactions. DSA is widely adopted to explain the PLC effect in superalloys, but was initially applied to model the effect of interstitial solutes in carbon-containing steel. There is often an implicit, mostly unsubstantiated assumption …
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Lattice gas models and simulations of epitaxial growth
… anisotropic nearest and next nearest neighbor interactions, whereas interactions in the bulk are isotropic. The anisotropic surface interactions reflect known properties of CdTe(001) like the small energy difference between the c(2x2) and (2x1) vacancy structures of Cd-terminated surfaces. A …