Ultrasonic Studies of Transient Seismo-Acoustic Waves in Bounded Solids and Liquid/Solid Interfaces.

This report summarizes a collection of laboratory ultrasonic modeling findings on transient liquid/solid seismo-acoustic wave phenomena. The topics covered include: (1)horizontal refraction of flexural waves by trapped gas pockets underneath floating plate, (2) wide-angle remote generation of broadb...

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Bibliographic Details
Main Author: Chamuel, Jacques R.
Other Authors: SONOQUEST ADVANCED ULTRASONICS RESEARCH WELLESLEY HILLS MA
Format: Text
Language:English
Published: 1991
Subjects:
Acoustics
ACOUSTIC DETECTORS
ACOUSTIC WAVES
ARCTIC REGIONS
BROADBAND
DISCONTINUITIES
EDGES
ELASTIC PROPERTIES
FLEXURAL PROPERTIES
GEOPHYSICAL PROSPECTING
GROUP VELOCITY
HORIZONTAL ORIENTATION
ICE MECHANICS
INTERFACES
LABORATORIES
LIQUIDS
MODELS
NONDESTRUCTIVE TESTING
RAYLEIGH WAVES
REFRACTION
SHALLOW WATER
SOLIDS
THICKNESS
TOPOGRAPHY
ULTRASONICS
UNDERWATER ACOUSTICS
WATER
WAVEGUIDES
WAVES
*Underwater acoustics
Scholte waves
Arctic regions.
Arctic
Online Access:http://www.dtic.mil/docs/citations/ADA243441
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA243441
Description
Summary:This report summarizes a collection of laboratory ultrasonic modeling findings on transient liquid/solid seismo-acoustic wave phenomena. The topics covered include: (1)horizontal refraction of flexural waves by trapped gas pockets underneath floating plate, (2) wide-angle remote generation of broadband transient Scholte waves at liquid/solid interfaces from conversion of underwater acoustic waves by abrupt liquid discontinuities, steep topographic features, and adjacent immersed elastic solids, (3) characteristics of multiple transient leaky Rayleigh wave components in shallow water, (4) effect of water loading on edge waves along apex of immersed acute-angle solid wedge, and (5) on group velocity of medium frequency transient longitudinal waves in thick elastic waveguides. The findings pertain to Arctic underwater acoustics, ice mechanics, geophysical exploration, material characterization, nondestructive testing, and acoustic sensors.

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