Title

Microwave Nondestructive Detection and Evaluation of Voids in Layered Dielectric Slabs

Abstract

A microwave nondestructive testing technique is discussed for detection and evaluation of voids in layered dielectric media backed by a conducting plate. This technique utilizes the phase properties of the effective reflection coefficient of the medium as a microwave signal penetrates inside the dielectric layers and is reflected by the conducting plate. Properties of the difference between this phase in the absence and presence of an air gap is investigated as a function of the void thickness, frequency, and dielectric properties of the layers. Utilizing a simple experimental apparatus measurements were also conducted, the results of which were compared with the theoretical predictions.

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Layered Dielectric Slabs; Microwave Nondestructive; Composite Testing and Evaluation; Electromagnetic Formulation-Probe Development and Antennas

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1990 Springer-Verlag, All rights reserved.


Share

 
COinS