Microwave detection of hairline surface-breaking cracks in metals using open-ended coaxial sensors: preliminary results

Reza Zoughi; Kent Hayes; Stoyan I. Ganchev

doi:10.1117/12.259120

14 November 1996 Microwave detection of hairline surface-breaking cracks in metals using open-ended coaxial sensors: preliminary results

Reza Zoughi, Kent Hayes, Stoyan I. Ganchev

Author Affiliations +

Proceedings Volume 2945, Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware; (1996) https://doi.org/10.1117/12.259120
Event: Nondestructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1996, Scottsdale, AZ, United States

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.

Citation Download Citation

Reza Zoughi, Kent Hayes, and 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); https://doi.org/10.1117/12.259120

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