Abstract of the paper ``Confirmation of Biot's theory''
Plona's recent measurements of elastic-wave speeds in a water-saturated
porous structure of sintered glass beads are compared quantitatively
to the predictions of Biot's theory. The theoretical predictions lie
within the bounds of experimental error (3%) for the fast compressional
wave and for the shear wave in all cases.
For the slow compressional wave, the theoretically predicted speeds lie
within about 10% of the experimental values and increase with increase in
porosity as observed. Our model achieves this agreement with no significant
free parameters. The frame moduli are estimated using a recently
developed self-consistent theory of composite materials. The induced mass
of the frame in a water environment is also estimated theoretically.
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