Observation of a second bulk compressional wave in a porous medium at ultrasonic frequencies

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書誌事項

公開日
1980-02-15
DOI
  • 10.1063/1.91445
公開者
AIP Publishing

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説明

<jats:p>A second bulk compressional wave has been observed in a water-saturated porous solid composed of sintered glass spheres using an ultrasonic mode conversion technique. The speed of this second compressional wave was measured to be 1040 m/sec in a sample with 18.5% porosity. The theory of Biot, which predicts two bulk compressional waves in porous media, provides a qualitative explanation of the observations. To the author’s knowledge, this type of bulk wave has not been observed at ultrasonic frequencies.</jats:p>

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