Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 22, Issue 6, Pages 330-332Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2012.2197384
Keywords
Complementary split-ring resonators (CSRR); corrosion precursor pitting; crack; detection
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Funding
- King Saud University
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A new sensor based on complementary split-ring resonators is presented to detect sub-millimeter surface cracks. The sensing mechanism is based on perturbing the electromagnetic field around an electrically small resonator, thus initiating a shift in the resonance frequency. The sensor is simple to fabricate and inexpensive as it is etched out in the ground plane of a microstrip-line using printed circuit board technology. The sensor exhibits a frequency shift of more than 240 MHz for a 100 mu m crack.
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