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：

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 analyzed 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. This paper shows 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.

引用

页码：261 / 269

页数：9

共 12 条

[1]

Abramowitz M., 1964, HDB MATH FUNCTIONS

[2] ON THE LONG-RANGE CORRELATION MODEL OF THE PHOTONUCLEAR EFFECT [J].