Abstract
Acoustic measurements of p-wave speed and attenuation were made for water-saturated granular medium, consisting of six kinds of glass-beads with mean grain size ranging from 90 to 875 microm, at frequency range between 400 kHz and 1.1 MHz. Sound speed and attenuation were obtained using the inter-receiver broadband estimation technique. The measured data exhibit various frequency dependencies for the different mean grain sizes, consistent with earlier measurements from other researches. These results reveal that the trend of dispersion relation for the sound speed and attenuation, in the high frequency region, is strongly dependent on the range of Rayleigh parameter kd.
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