14 November 1996 Microwave detection of corrosion under paint and composite laminate coatings
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Abstract
Microwave and millimeter wave nondestructive methods using open-ended sensors have shown great potential for detecting minute thickness variations in laminate structures, in particular those backed by a conducting plate. Similarly, slight variations in the composition of dielectric materials may also be detected using a set of optimal parameters which include the standoff distance and the frequency of operation. In this paper the potential of using an open- ended rectangular waveguide for detecting the presence of rust under common paint and composite laminate coatings will be demonstrated. An experimental scanned image of a steel specimen with an area of induced corrosion will also be shown.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nasser Qaddoumi, Reza Zoughi, "Microwave detection of corrosion under paint and composite laminate coatings", Proc. SPIE 2945, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware, (14 November 1996); doi: 10.1117/12.259109; https://doi.org/10.1117/12.259109
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