Nonlinearity of acoustic waves at solid-liquid interfaces

Christ Glorieux; Kris Van de Rostyne; Vitalyi Gusev; Weimin Gao; Walter Lauriks; Jan Thoen

doi:10.1121/1.1420388

Nonlinearity of acoustic waves at solid-liquid interfaces

J Acoust Soc Am. 2002 Jan;111(1 Pt 1):95-103. doi: 10.1121/1.1420388.

Authors

Christ Glorieux¹, Kris Van de Rostyne, Vitalyi Gusev, Weimin Gao, Walter Lauriks, Jan Thoen

Affiliation

¹ Laboratorium voor Akoestiek en Thermische Fysica, Departement Natuurkunde, Katholieke Universiteit Leuven, Belgium.

PMID: 11831827
DOI: 10.1121/1.1420388

Abstract

The small-amplitude and finite-amplitude propagation characteristics of laser line source excited and laser detected Scholte waves are investigated. Acoustic waves with Mach numbers up to 0.054 are observed at the interface between water and glass. In our case of a hard solid-liquid interface, the Scholte wave propagates very much like a bulk wave, for which the simple-wave equation holds. The experimental results are well fitted with this model, extended with an attenuation term. An anomalously large (compared with low amplitude viscous effects) attenuation reveals possible leakage of energy from the Scholte wave to bulk waves, through a mechanism of nonlinear mixing between the different wave modes and viscosity induced turbulence.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Acoustics*
Lasers
Nonlinear Dynamics*
Time Factors