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Medida de la velocidad de propagación en líquidos en el rango de bajas frecuencias ultrasónicas

Authors: Elvira Segura, Luis;

Medida de la velocidad de propagación en líquidos en el rango de bajas frecuencias ultrasónicas

Abstract

[ES] En este trabajo se presenta una nueva técnica experimental para la medida de la velocidad del sonido en líquidos, en el rango de las bajas frecuencias ultrasónicas (< 50 khz). Esta técnica se basa en la teoría de propagación de ondas mecánicas en guías de onda elásticas, considerando éstas rellenas de un líquido viscoso. Frente a otras técnicas existentes, este método presenta la ventaja de precisar un pequeño volumen de líquido (< 10 ml) para efectuar la medida.

[EN] A new experimental technique for the sound velocity measurement in liquids in the low frequency ultrasonic range (< 50 khz) is presented in this paper. This technique is based on the mechanic wave propagation theory for elastic waveguides filled with a viscous liquid. The small liquid samples required (< 10 ml) for the measurement is an important advantage over other existing techniques.

7 pp.-- PACS nr.: 43.35 Bf.-- Comunicación presentada en los siguientes congresos: II Congreso Iberoamericano de Acústica. XXXI Congreso Nacional de Acústica – TecniAcústica 2000. II Jornadas Iberoamericanas de Ultrasonidos. II Congreso Ibérico de Acústica. EAA Symposium on Architectural Acoustics (Madrid, 16-20 Octubre 2000).

Publicado también en número especial de la Revista de Acústica, Vol. XXXI, año 2000.

Peer reviewed

Keywords

Experimental techniques, Liquids, Sound velocity measurement, Low frequency ultrasonic range

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