Effects of Lamb Waves on Ultrasonic Bounded Beam Propagation.

Schlieren techniques are used to show that non-specular reflections of bounded sonic beams occur from a solid-plate/water interface when a Lamb mode of the solid plate is excited by the incident sonic beam impinging at a Lamb angle. The resulting change in the profile of the reflected beam is measur...

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Bibliographic Details
Main Author: Plona,Thomas J.
Other Authors: GEORGETOWN UNIV WASHINGTON D C DEPT OF PHYSICS
Format: Text
Language:English
Published: 1975
Subjects:
Snow
Ice and Permafrost
Acoustics
*ULTRASONIC RADIATION
*UNDERICE
REFLECTION
SOUND TRANSMISSION
SEA ICE
ARCTIC REGIONS
*Lamb waves
Arctic
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA010881
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA010881
Description
Summary:Schlieren techniques are used to show that non-specular reflections of bounded sonic beams occur from a solid-plate/water interface when a Lamb mode of the solid plate is excited by the incident sonic beam impinging at a Lamb angle. The resulting change in the profile of the reflected beam is measured and compared to predictions based on theory. Doctoral thesis.

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