Microwave Detection of Hairline Surface-Breaking Cracks in Metals using Open-Ended Coaxial Sensors: Preliminary Results
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.
R. Zoughi et al., "Microwave Detection of Hairline Surface-Breaking Cracks in Metals using Open-Ended Coaxial Sensors: Preliminary Results," Proceedings of Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware (1996, Scottsdale, AZ), vol. 2945, pp. 444 - 450, SPIE--The International Society for Optical Engineering, Dec 1996.
The definitive version is available at https://doi.org/10.1117/12.259120
Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware (1996: Dec. 3-5, Scottsdale, AZ)
Electrical and Computer Engineering
Keywords and Phrases
Coaxial Sensors; Crack Detection; Hairline Surface-Breaking Cracks; Cracks; Inspection; Nondestructive Examination; Sensors; Metals
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Article - Conference proceedings
© 1996 SPIE--The International Society for Optical Engineering, All rights reserved.
01 Dec 1996