Sound speed in water-saturated glass beads as a function of frequency and porosity

Details Sound speed in water-saturated glass beads as a function of frequency and porosity Sound speed in water-saturated glass beads as a function of frequency and porosity

2009-06-25

arxiv.org/abs/0906.4798v2

J. Acoust. Soc. Am. Volume 129, pp. EL101-EL107, 2011

Physics

Condensed Matter

Soft Condensed Matter

removed discussion of attenuation

Scientific paper

10.1121/1.3544678

Sound propagation in water-saturated granular sediments is known to depend on the sediment porosity, but few data in the literature address both the frequency and porosity dependency. To begin to address this deficiency, a fluidized bed technique was used to control the porosity of an artificial sediment composed of glass spheres of 265 {\mu}m diameter. Time-of-flight measurements and the Fourier phase technique were utilized to determine the sound speed for frequencies from 300 to 800 kHz and porosities from 0.37 to 0.43. A Biot-based model qualitatively describes the porosity dependence.

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