The detection sensitivity optimization of air disbond in layered dielectric composites, using an open-ended rectangular waveguide, is studied both theoretically and experimentally. The sensitivity of the disbond detection is strongly influenced by the proper choice of parameters such as the operating frequency and the layered composite geometry (conductor hacked or terminated by an infinite half-space of air). The capability of optimizing the measurement system parameters to detect and estimate the thickness of a disbonded layer independent of some changes in the thickness of the dielectric coating is also demonstrated. The impact of the parameters influencing detection optimization is theoretically investigated and then experimentally verified.
N. Qaddoumi et al., "Microwave Detection Optimization of Disbond in Layered Dielectrics with Varying Thickness," IEEE Transactions on Instrumentation and Measurement, Institute of Electrical and Electronics Engineers (IEEE), Jan 1995.
The definitive version is available at http://dx.doi.org/10.1109/19.377843
Electrical and Computer Engineering
Keywords and Phrases
Air Disbond; Detection Optimization; Detection Sensitivity Optimization; Dielectric Measurement; Dielectric Thin Films; Disbonded Layer; Infinite Half-Space; Layered Composite Geometry; Layered Dielectric Composites; Layered Dielectrics; Microwave Detection Optimization; Microwave Measurement; Nondestructive Testing; Open-Ended Rectangular Waveguide; Optimisation; Rectangular Waveguides; Thickness Measurement; Varying Thickness; Composite Testing and Evaluation; Electromagnetic Formulation-Probe Development and Antennas
International Standard Serial Number (ISSN)
Article - Journal
© 1995 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.