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 20 of 484 for “"Mechanical Behavior"”.
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Mechanical behavior of nonwoven felts
… the localization of damage in a wide band. The mechanical behavior of the non-woven felt until final fracture was modeled by the finite element simulation of a 2D random network in which the geometric characteristics of the network and the constituent properties were obtained from experiments on …
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Mechanical behavior of truss materials
… Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Mechanical behavior of ultrastructural biocomposites
… used to show the anisotropic nanoscale plastic behavior of single crystal aragonite for indentations into three mutually orthogonal planes.
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Mechanical behavior of cementitious foams
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1991.
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Mechanical behavior of four brittle polymers
… Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Mechanical Behavior of Posterior Implant Supported Restorations
… was subjected to 1.2 million cycles of thermo-mechanical fatigue loading in a dual axis chewing simulator to simulate 5 years of clinical service. Surviving samples were loaded to fracture in a universal testing machine. Data was recorded, tabulated and analyzed. For the fatigue loading test, …
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Mechanical behavior of elastic rods under constraint
… self-weight, ii) the buckling and post-buckling behavior of a rod compressed inside a cylindrical constraint, iii) the mechanical instabilities arising when a rod is progressively injected into a horizontal cylinder, and iv) strategies for mitigation of these instabilities by dynamic excitation …
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High temperature mechanical behavior of Maryland diabase
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1981.
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Mechanical Behavior of Soil-Bentonite Cutoff Walls
… soil-bentonite cutoff walls are common, their mechanical behavior is not well understood. Current design procedures do not consider the final stress state of the consolidated soil-bentonite backfill or deformations in adjacent ground. The final stress state in the completed wall is important …
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Mechanical Behavior of Magnesium Experienced Severe Plastic Deformation
This thesis reviewed the development of processing technologies, including forging, rolling, extrusion and equal channel angular pressing (ECAP). Among these technologies, ECAP technology to process pure magnesium was studied. This thesis describes what ECAP technology is and reviews the current …
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Processing, microstructure and mechanical behavior of nanocomposite multilayers
… components. At present, scale effects on the mechanical behavior of multilayers are not well understood. Three multilayer nanocomposite systems, namely Al/Al2O3, Ti/TiN, and Cr/a-C, have been synthesized by using a dual-gun e-beam physical vapor deposition, to investigate the effect of layer …
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Mechanical behavior of individual type I collagen fibrils
Despite the plethora of studies on the mechanical response of collagen, especially at the molecular scale or at much larger length scales, such as of those of fibers, tendons, and fascicles, there is still limited information about the mechanics of collagen fibrils (50 - 500 nm diameter) that serve …
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Time dependent mechanical behavior of mammalian collagen fibrils
… in connective mammalian tissues. While the mechanical behavior of tissues has been studied extensively and was shown to follow non-linear viscoelasticity, as similar quantitative understanding of the time-dependent deformation of individual collagen fibrils is missing, albeit essential for …
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Mechanical behavior of dip-brazed aluminum sandwich panels
… study was carried out to determine the mechanical behavior of sandwich panels containing cellular cores of varying shape. Compression and four point bend tests were performed on sandwich panels with square and triangular honeycomb cores. These honeycombs were made of perforated aluminum …
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Multiscale Modeling of the Mechanical Behavior of Clay
… exhibit non-linear, inelastic and hysteretic behaviors that are also observed in macroscale experimental results. Elastic properties estimated from the stress-strain data also exhibit trends similar to published experimental studies on pure clay minerals. The stiffness properties a re c …
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The mechanical behavior of high performance polymer fibers
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1992.
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Mechanical behavior of a ceramic matrix composite material
… carbide cloth (Nicalon) has been studied. The mechanical testing which was performed included both flexural and tensile loading configurations. This testing was done not only to determine the material properties, but also to initiate a controlled amount of damage within each specimen. Several …
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Microstructural Heterogeneity and the Mechanical Behavior of Nanocrystalline Metals
… and nanocrystalline metals leads to unusual mechanical behavior. In the first part of the study, we have shown that (a) nanocrystalline metals, unlike their coarse grained counterparts, recover a substantial fraction (50 to 100%) of their plastic deformation after unloading, and (b) ultrafine …
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Nanostructure stabilization and mechanical behavior of binary nanocrystalline alloys
The unique mechanical behavior of nanocrystalline metals has become of great interest in recent years, owing to both their remarkable strength and the emergence of new deformation physics at the nanoscale. Of particular interest has been the breakdown in Hall-Petch strength scaling, which is …
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