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3 August 2001 Long-distance leaky surface ultrasonic waves
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This paper contains a description of an unique wave that was created in a two plate system separated by a layer of water. First, a Lamb wave was created in the upper plate by placing a transducer on a wedge on top of the plate at an appropriate angle and frequency. This wave was created to act like quasi-Rayleigh (surface) waves on both surfaces of the plate. The wave on the bottom surface of the upper plate then leaked through the water into the upper surface of the lower plate. We will show both experimentally and theoretically that the wave on the surfaces of the plates in contact with water leak constructively to create a leaky-wave that can travel great distances.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Kathy Joseph, Subash B. Jayaraman, and Bernhard R. Tittmann "Long-distance leaky surface ultrasonic waves", Proc. SPIE 4336, Nondestructive Evaluation of Materials and Composites V, (3 August 2001);

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