IDENTIFICATION OF CAVITY FILLERS IN ELASTIC SOLIDS USING THE RESONANCE SCATTERING-THEORY

被引：18
|
作者：
GAUNAURD, GC [1 ]
UBERALL, H [1 ]
机构：
[1] CATHOLIC UNIV AMER,DEPT PHYS,WASHINGTON,DC 20064
来源：
ULTRASONICS | 1980年 / 18卷 / 06期
关键词：
Chemical elements - Elastic waves - Resonance - Spectroscopic analysis;
D O I：
10.1016/0041-624X(80)90065-7
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Elastic waves incident on and scattered by fluid-filled (spherical) cavities in solids are usually described by summed scattering amplitudes. These summed amplitudes, when analysed one partial wave at a time, are seen to consist of two interfering contributions. One is a smooth background corresponding to scattering from an empty cavity, and the other is a superimposed set of resonance ‘spikes’ (lines with narrow width) of the filler fluid. We show in this paper how these modal resonances and their widths can be used to identify the material composition of the filler fluid in a way that resembles the spectroscopic methods used to identify chemical elements by means of their optical spectra. © 1980, All rights reserved.
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页码：261 / 269
页数：9
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