Experimental and theoretical study of elastic wave dispersion in a liquid bilayer

J. Laperre, W. Thys
1992 Journal of the Acoustical Society of America  
In this paper we analyse the dispersion of the normal propagation modes of a liquid bilayer in terms of the dispersion in the constituent layers with the proper boundary conditions. The analysis is done in the framework of an acoustic raymodel which leads to a transparent form of the dispersion relation. Although a liquid bilayer is of no direct practical use, the data analysis will prove to be of great help when studying solid multilayers. Rttsumtt Dans cet article nous analysons la dispersion
more » ... ysons la dispersion des modes de Lamb d'une bicouche liquide, en partant des modes des monocouches isol6es avec les conditions de bord adapt6es. L'analyse est faite A l'aide d'un modele A rayon, ce qui permet d'kcrire la relation de dispersion dans une forme simple et transparente. Les conclusions et la fason d'analyser seront utiles pour comprendre la dispersion dans des multicouches solides. Article published online by EDP Sciences and available at http://dx.
doi:10.1121/1.403960 fatcat:4gghjrqmszdiveuulgvuvsecta