Microwave noncontact examination of disbond and thickness variation in stratified composite media
- Colorado State Univ., Ft. Collins, CO (United States). Electrical Engineering Dept.
Numerical and experimental results of a microwave noncontact, nondestructive detection and evaluation of disbonds and thickness variations in stratified composite media are presented. The aperture admittance characteristics of a flange mounted rectangular waveguide radiating into a layered, generally lossy dielectric media backed or unbacked by a conducting sheet is modeled. The theoretical implementation is based on a Fourier transform boundary matching technique to construct the field components in each medium, coupled with a stationary form of the terminating aperture admittance of the waveguide. The model can serve as a reliable test bed for real-time examination of layered composite media. Experiment; results for several case are presented which show good agreement with the theoretical findings. This is a versatile technique for near-field in situ interrogation of stratified composite media which provides for high resolution measurements.
- OSTI ID:
- 7301102
- Journal Information:
- IEEE Transactions on Microwave Theory and Techniques (Institute of Electrical and Electronics Engineers); (United States), Vol. 42:3; ISSN 0018-9480
- Country of Publication:
- United States
- Language:
- English
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