RECENT DEVELOPMENTS IN QUANTITATIVE ULTRASONIC NDE OF COMPOSITES

被引：29
|
作者：
SACHSE, W
CASTAGNEDE, B
GRABEC, I
KIM, KY
WEAVER, RL
机构：
[1] Department of Theoretical and Applied Mechanics, Cornell University, Ithaca
来源：
ULTRASONICS | 1990年 / 28卷 / 02期
基金：
美国国家科学基金会;
关键词：
composites; elastic constants; materials characterization; neural signal processing;
D O I：
10.1016/0041-624X(90)90005-9
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper summarizes several recent developments which are facilitating new approaches for both active and passive quantitative ultrasonic measurements in composite materials. These include the development of point sources and point receivers, a theory for analysing the propagation of transient elastic waves through a bounded, dispersive and attenuative medium and the development and implementation of appropriate signal processing algorithms by which the detected ultrasonic signals can be processed to recover the elastic properties of an anisotropic material, the characteristics of wave propagation, or the characteristics of the source. An alternative to these deterministic approaches is a processing scheme based on a simulated intelligent system which processes ultrasonic signals like a neutral network. Examples of applications of these ideas to the ultrasonic NDE of composite materials are given. © 1990.
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页码：97 / 104
页数：8
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