Corrosion pitting defection is a critical issue in the maintenance of aircraft. Near-field microwave nondestructive techniques have been successfully used for defection of corrosion under paint. In this paper a comparison between several different millimeter wave probes is made for the detection and evaluation of corrosion precursor pitting under paint at Ka-band and V-band. Since the pittings investigated here are very small in size, spatial resolution and sensitivity of the probes are critical issues. If is shown that modified open-ended rectangular probes namely, tapered waveguide and dielectric slab-loaded waveguide probes provide high resolution and sensitivity for the detection and evaluation of very small pittings under paint.
M. T. Ghasr et al., "Comparison of Near-Field Millimeter Wave Probes for Detecting Corrosion Pit under Paint," Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference (2004, Como, Italy), vol. 3, pp. 2240-2244, Institute of Electrical and Electronics Engineers (IEEE), May 2004.
The definitive version is available at http://dx.doi.org/10.1109/IMTC.2004.1351537
21st IEEE Instrumentation and Measurement Technology Conference (2004: May 18-20, Como, Italy)
Electrical and Computer Engineering
Keywords and Phrases
Corrosion pitting detection; Dual tapered waveguides; Open-ended rectangular probes; Spatial resolution; Aircraft; Aluminum; Dielectric waveguides; Nondestructive examination; Paint; Pitting; Preventive maintenance; Probability; Millimeter waves
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Article - Conference proceedings
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