Guided wave modes in porous cylinders: Experimental results

C.J. Wisse; D.M.J. Smeulders; M.E.H. Dongen, van; G.E Chao

doi:10.1121/1.1497621

Guided wave modes in porous cylinders: Experimental results

C.J. Wisse, D.M.J. Smeulders, M.E.H. Dongen, van, G.E Chao

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Abstract

In this paper guided wave modes in porous media are investigated. A water-saturated porous cylinder is mounted in the test section of a shock tube. Between the porous sample and the wall of the shock tube a water-filled annulus exists. For very small annulus width, bulk waves are generated and one-dimensional modeling is sufficient. Otherwise two-dimensional effects become important and multiple guided wave modes occur. Using a newly developed traversable positioning system in the shock tube, the frequency-dependent phase velocities and damping coefficients in the 1–120 kHz frequency range were measured. Prony's method was used for data processing. Agreement was found between the experimental data and the two-dimensional modeling of the shock tube which was based on Biot's theory.

Original language	English
Pages (from-to)	890-895
Journal	Journal of the Acoustical Society of America
Volume	112
Issue number	3
DOIs	https://doi.org/10.1121/1.1497621
Publication status	Published - 2002

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Wisse, C. J., Smeulders, D. M. J., Dongen, van, M. E. H., & Chao, G. E. (2002). Guided wave modes in porous cylinders: Experimental results. Journal of the Acoustical Society of America, 112(3), 890-895. https://doi.org/10.1121/1.1497621

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10.1121/1.1497621