2015
DOI: 10.1121/1.4916967
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Comment on “Attenuation and dispersion of sound in dilute suspensions of spherical particles” [J. Acoust. Soc. Am. 108(1), 126–146 (2000)]

Abstract: Comment is made on an article by Temkin [J. Acoust. Soc. Am. 108(1), 126-146 (2000)]. This work illustrates the impact of particle size distribution on the dispersion and attenuation of sound waves propagating through particle suspensions. Temkin's propagation theory is extended for poly-disperse distributions of spherical particles, applicable to real suspensions. Significant changes in dispersion and attenuation appear near the particle resonance for both bubble and solid particle suspensions. Existing exper… Show more

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Cited by 2 publications
(2 citation statements)
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“…The seemingly "irregular" phase velocity (which reaches values close to 9000 m/s) vs. frequency curves are attributed to the interaction of the waves with the cavities formed by the air bubbles. This is in accordance with studies in gels and suspensions where phase velocity exhibits a strong attenuation and phase velocity peaks at wavelengths much longer than the air bubble size [14].…”
Section: Resultssupporting
confidence: 92%
“…The seemingly "irregular" phase velocity (which reaches values close to 9000 m/s) vs. frequency curves are attributed to the interaction of the waves with the cavities formed by the air bubbles. This is in accordance with studies in gels and suspensions where phase velocity exhibits a strong attenuation and phase velocity peaks at wavelengths much longer than the air bubble size [14].…”
Section: Resultssupporting
confidence: 92%
“…Nevertheless, the matrix hardens, imposing stiff boundary conditions to the bubbles, restraining therefore, their scattering contribution. Herein, it is mentioned that, indeed, cavities in liquid matrix produce strong resonant peaks in phase velocity (even higher than 10 km/s), as seen experimentally and predicted theoretically [ 16 , 24 , 25 ]. These peaks are (almost) eliminated when the matrix obtains a minimum level of stiffness [ 8 ].…”
Section: Ultrasonic Dispersion Resultsmentioning
confidence: 66%