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Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: January-March 2002

Description: Three major goals were accomplished during this phase. First, a study was completed of the effects of stress-induced changes in anisotropic elastic moduli in sandstone. Second, a new method for measuring the anisotropic poroelastic moduli from acoustic data was developed. Third, a series of triaxial experiments were conducted on unconsolidated sands to identify pressure/stress conditions where liquefaction occurs under high confining pressures. Stress-induced changes in anisotropic Young's modu… more
Date: April 30, 2002
Creator: Scott Thurman E., Jr.; Abousleiman, Younane & Zaman, Musharraf
Partner: UNT Libraries Government Documents Department
open access

Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: April-June 2002

Description: During the sixth quarter of this research project the research team developed a method and the experimental procedures for acquiring the data needed for ultrasonic tomography of rock core samples under triaxial stress conditions as outlined in Task 10. Traditional triaxial compression experiments, where compressional and shear wave velocities are measured, provide little or no information about the internal spatial distribution of mechanical damage within the sample. The velocities measured bet… more
Date: November 18, 2002
Creator: Scott, Thurman E., Jr.; Abousleiman, Younane & Zaman, Musharraf
Partner: UNT Libraries Government Documents Department
open access

Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: July-September 2002

Description: During the seven quarter of the project the research team analyzed some of the acoustic velocity data and rock deformation data. The goal is to create a series of ''deformation-velocity maps'' which can outline the types of rock deformational mechanisms which can occur at high pressures and then associate those with specific compressional or shear wave velocity signatures. During this quarter, we began to analyze both the acoustical and deformational properties of the various rock types. Some o… more
Date: November 18, 2002
Creator: Scott, Thurman E., Jr.; Abousleiman, Younane & Zaman, Musharraf
Partner: UNT Libraries Government Documents Department
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