On the Existence of Interfacial (Stoneley) Waves in Bonded Piezoelectric HalfSpaces
Abstract
A new definition of the piezoelectric limiting speed, based on the piezoelectrically stiffened acoustical tensor is introduced. The Stoneley wave problem is readily formulated for bonded piezoelectric halfspaces in both the Φ and F representations introduced by Lothe & Barnett. The notion of the F piezoelectric interfacial impedance tensor, which is an extension of the elastic interfacial impedance tensor, is used to show that a maximum of two subsonic Stoneley waves can occur. A definite existence criterion for a single subsonic piezoelectric Stoneley mode is given, and a numerical scheme that searches for Stoneley modes, when they exist for a given geometry and material combination, is also presented along with a numerical example for two joined cadmium sulphide halfspaces.
 Publication:

Proceedings of the Royal Society of London Series A
 Pub Date:
 June 1990
 DOI:
 10.1098/rspa.1990.0075
 Bibcode:
 1990RSPSA.429..587A