MICROWAVE NONDESTRUCTIVE DETECTION AND EVALUATION OF DISBONDING AND DELAMINATION IN LAYERED-DIELECTRIC-SLABS

被引：66

作者：

ZOUGHI, R

BAKHTIARI, S

机构：

[1] Department of Electrical Engineering, Colorado State University, Ft. Collins

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1990年 / 39卷 / 06期

关键词：

D O I：

10.1109/19.65826

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A microwave nondestructive technique for detection and evaluation of disbonding and delamination in layered-dielectric-slabs backed by a conducting plate is discussed. The theoretical development begins by considering an incident wave illuminating such a medium and then formulating the characteristics of the wave reflected by the metal plate. An effective reflection coefficient is determined in this way whose phase characteristics are used in the detection and evaluation of delaminations in the media. The characteristics of this phase as a function of several parameters such as delamination dielectric constant and thickness, slab dielectric constant, and thickness and the frequency of operation are investigated. The description of an experimental apparatus is given and it is used to perform several experiments to test and verify the theory. Very good agreement was obtained between the theoretical and experimental results. © 1990 IEEE

引用

页码：1059 / 1063

页数：5