An Experimental Investigation of Acoustic Propagation in Saturated Sand with Variable Fluid Properties
Wednesday, February 20, 1985 12:00 p.m.
Department of Mechanical Engineering
The University of Texas at Austin
The Biot-Stoll theory describes the propagation of acoustic waves in a saturated, unconsolidated porous medium. The expressions for the attenuation and phase velocity derived from this theory depend explicitly on the viscosity, density, and bulk modulus of the pore fluid. An experiment has been designed to determine the dependence of attenuation and phase velocity on these properties of the pore fluid. The phase velocity and attenuation of compressional waves were measured using a mixture of water and glycerine as the interstitial fluid. A review of the experimental procedure and the results will be presented, together with comparisons with the Biot-Stoll theory.