14 November 1996 Microwave detection of hairline surface-breaking cracks in metals using open-ended coaxial sensors: preliminary results
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Abstract
Recent microwave methods have shown to be capable of detecting and sizing surface slots and cracks in metals. These methods have incorporated the use of an open-ended rectangular waveguide probe for such measurements. A new microwave method utilizing an open-ended coaxial line sensor has been under investigation for some time now. Coaxial line sensors have certain features that make them quite attractive for surface crack detection. These features include their high level of sensitivity to the presence of very narrow cracks as will as the fact that their geometry may include complicated bends allowing access to hard to reach places. This paper presents and comments on some preliminary experimental results of using this sensor for hairline surface crack detection.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Reza Zoughi, Kent Hayes, Stoyan I. Ganchev, "Microwave detection of hairline surface-breaking cracks in metals using open-ended coaxial sensors: preliminary results", Proc. SPIE 2945, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware, (14 November 1996); doi: 10.1117/12.259120; https://doi.org/10.1117/12.259120
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