Examinando por Materia "Anisotropía"

Mostrando 1 - 3 de 3
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    Diseño de parámetros de adquisición sísmica 3D orientado a la detección de fracturas asistido por modelado sísmico anisótropo
    (Universidad EAFIT, 2013) Vega Delgado, Juan Carlos; Checa Jiménez, Jaime; Mora Bohórquez, Andrés Roberto
    The improving of seismic images with low illumination is possible a trough the new seismic acquisitions planned using seismic modeling and specific objectives to illuminate in areas where it has “low illumination” -- This work is focused to development a theory to improve the illumination of the subsurface, based in the ray tracing and it having into account the anisotropy effect that both, overburden and geological unit can to print to seismic wave registered -- In the first chapters, we try to rebuild the anisotropic effect increasingly complex analysis to have a geological model representative of a prospective field, which is affected by intense fracturing and this affects the quality of the currently acquired seismic, so we have created a seismic model with HTI anisotropy to evaluate the possibility of improving the quality of a new seismic design that can be added to the existing seismic through a processing flow -- Results show that to use a ray tracer methodology in “ghost zones”, is possible to find a new geometry in surface that really adds the illumination in Problem areas with interest in fracture reservoirs
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    Effect of chemical composition and microstructure on the mechanical properties of fish scales from Megalops Atlanticus
    (Universidad EAFIT, 2014) Gil Durán, Santiago; Ossa Henao, Édgar Alexánder
    Fishes use their scales as a protection against external threats like environmental hazards and predators -- This work presents an experimental study of the microstructure, composition and mechanical properties of Megalops Atlanticus (Atlantic tarpon) scales -- Mechanical properties were evaluated in uniaxial tension as a function of position along the length of the fish (head, mid-length and tail) -- Additional tensile tests were performed in three different orientations (0°,45°, and 90°) to evaluate the anisotropic behavior of the scales -- Examination of fish scale microstructure and compositions were performed by using Scanning Electron Microscopy (SEM) and RAMAN spectroscopy -- The results showed that scales from Megalops Atlantiticus are anisotropic, with variations of mechanical properties as a function of body position -- Megalops Atlantiticus scales display a characteristic hierarchical structure composed of fibrous collagen layered structures and hydroxyapatite crystals that provide multifunctional characteristics, showing to have a non-homogenous distribution within the scale
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    Estimación de las direcciones de fracturas basada en la técnica de la elipse NMO equivalente
    (Universidad EAFIT, 2011) Pérez Valencia, Felipe Andrés; Camacho, Germán