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 5 of 5 for “"fracture surface roughness"”.
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Hydrogen degradation and microstructural effects of the near-threshold fatigue resistance of pressure vessel steels
… and crack closure, enhanced by the increased surface roughness and the wedging action of the oxidation product. The microstructure is proposed to affect crack propagation rates mainly through crack closure induced by the synergistic effect of fracture surface roughness and oxide produced by …
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Production Analysis and Enhancement in The Unconventional Tight Formations
… and reserves estimation in the hydraulically fractured tight reservoirs. It can identify and model a dual-regime production profile with both linear and boundary dominated flow. Natural fractures and hydraulically induced fractures, either being propped or unpropped, are critical to the well …
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Investigation of the fracture phenomena during the milling process of inorganic particulates and brittle fracture of polymer composites using fractal theory
… of applying Fractal mathematics and to the fracture of brittle particulates in Fluid Energy Mill devices, and in particular quantifying the resulting power law particle size distributions, examining the Surface Fractal Dimension of milled particulates, and relating the Izod Impact Strength …
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Characterization of anisotropy in organic-rich shales: shear and tensile failure, wave velocity, matrix and fracture permeability
Lamination and fractures are common features in organic-rich shales. The objective of this thesis is to determine the impact of lamination and fractures on elastic properties, shear and tensile failures, and the permeability of organic-rich shales. The elastic properties of rocks determine the …
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Characterization of Fractures Subjected to Normal and Shear Stress
… a series of laboratory experiments to determine fracture specific stiffness, for a fracture subjected to shear and normal stress, are presented and analyzed. The experimental work focuses on the determination of relations between normal and shear fracture specific stiffness and between spatial …