INFLUENCE OF AN INCLUSION ON THE PHASE OF A STONELEY WAVE

The propagation of a Stoneley wave through an inclusion near a liquid/ solid interface is investigated on the basis of mode theory [Briers et al., J. Acoust. Soc. Am. 95, 1953-1966, 1967-1976 (1994)]. An express ion for the phase and amplitude changes of the Stoneley wave is derive d and analyzed in the case of a thin (kd much less than 1) and of a th ick (kd much greater than 1) inclusion of arbitrary length (kd is the multiplication of the liquid wave number with the thickness of the inc lusion). (C) 1997 Acoustical Society of America.