A Unified Theoretical Description of Ultrasonic Beam Reflections from a Solid Plate in a Liquid.

The study represents a theoretical analysis of reflectivities from a solid bounded by a liquid; specifically, it takes into account the dimensions of the solid as compared to the wavelength of the incident sonic signal. The result of the study is a unified theory which explains certain equivalencies...

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Bibliographic Details
Main Author: Pitts,Leslie E.
Other Authors: GEORGETOWN UNIV WASHINGTON D C DEPT OF PHYSICS
Format: Text
Language:English
Published: 1975
Subjects:
Acoustic Detection and Detectors
Acoustics
*Ultrasonic radiation
*Reflection
Solids
Plates
Ice
Analytic functions
Fourier transformation
Numerical analysis
Underwater sound
Sea ice
Sonar echoes
Interfaces
Most project-2
Online Access:http://www.dtic.mil/docs/citations/ADA018162
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA018162
Description
Summary:The study represents a theoretical analysis of reflectivities from a solid bounded by a liquid; specifically, it takes into account the dimensions of the solid as compared to the wavelength of the incident sonic signal. The result of the study is a unified theory which explains certain equivalencies between the Rayleigh mode of vibration (when the solid is infinitely thick) and the various Lamb modes (when the reflecting solid has finite dimensions, i.e., when the reflecting solid has a plate-like structure). A knowledge of the reflection coefficient for an ice water interface is of importance when a sonic event takes place in the water and sound energy reaches the ice.

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