Waveguide probe loaded with split-ring resonators for crack detection in metallic surfaces

Bing Hu, Zhao Ren, Muhammed S. Boybay, Omar M. Ramahi

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45 引用 (Scopus)

摘要

We present a near-field waveguide probe with an embedded array of split-ring resonators (SRRs) that operate at 16.65 GHz. When the probe scans a metal surface, the magnetic flux generated from the currents on the metallic surface strongly affects the equivalent lumped parameters of the SRRs. This, in turn, affects the reflection coefficient of the feeding port leading to high sensitivity in detecting anomalies such as cracks in the surface. Experimental results indicated the feasibility of detecting cracks, as small as 25 μm in width, in metallic surfaces. Additionally, the probe achieves good resolution in detecting closely spaced cracks.

源语言英语
文章编号6763023
页(从-至)871-878
页数8
期刊IEEE Transactions on Microwave Theory and Techniques
62
4
DOI
出版状态已出版 - 4月 2014

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