An Improved Method to Measure Slow Compressional Wave in Fluid-Saturated Porous Plates by Using Lamb Modes

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1990
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Xue, Qiang
Adler, Laszlo
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Review of Progress in Quantitative Nondestructive Evaluation
Center for Nondestructive Evaluation

Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.

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The theory of elastic wave propagation in fluid-saturated porous solids was established by Biot in 1956 [1,2]. Biot predicted the existence of three bulk modes: fast compressional wave, slow compressional wave, and shear wave. However, experimental confirmation of Biot’s theory at ultrasonic frequencies was not achieved until 1980 when Plona [3] observed slow compressional waves on fluid-saturated synthetic porous solids by using mode conversion technique. Since that time, Plona’s method has been adopted as a major approach to measure slow compressional wave in fluid-saturated porous media.

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Mon Jan 01 00:00:00 UTC 1990