Complementary Split-Ring Resonator for Crack Detection in Metallic Surfaces

Author

Albishi, Ali M. ; Boybay, Muhammed S. ; Ramahi, Omar M.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Waterloo, Waterloo, ON, Canada

Volume

22

Issue

6

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

330

Lastpage

332

Abstract

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 μm crack.

Keywords

crack detection; microfabrication; microsensors; microstrip resonators; printed circuits; complementary split-ring resonator; electrically small resonator; electromagnetic field; frequency 240 MHz; ground plane; metallic surfaces; microstrip-line; printed circuit board technology; resonance frequency; size 100 mum; submillimeter surface crack detection; Aluminum; Frequency measurement; Microstrip; Microwave theory and techniques; Resonant frequency; Surface cracks; Surface waves; Complementary split-ring resonators (CSRR); corrosion precursor pitting; crack; detection;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2012.2197384

Filename

6202377