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UHF RFID system for wirelessly detection of corrosion based on resonance frequency shift in forward interrogation power

Lookup NU author(s): Aobo Zhao, Professor Gui Yun TianORCiD


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© The Institution of Engineering and Technology 2018. A radio frequency identification (RFID) based system is developed in this paper as a novel passive wireless sensor to detect corrosion for structural health monitoring (SHM) of metallic surface through simulation, design, fabrication and experiment. Firstly, a 2D label-type antenna in a new configuration - circular three arm (CTA) element - is designed as an ultrahigh frequency (UHF) RFID sensor tag working on surface of steel samples. To improve gain and power transmission coefficient, a parasitic element has been added into the centre of CTA. The CTA antenna attached with the parasitic element - so called (CTAP) sensor - has a quality factor notably higher than similar metal mountable UHF RFID antennas that has been resulted to revelation of resonance frequency in measured forward interrogation power. A demonstration and validation system are introduced then to detect corrosion based on the shift of revealed resonance frequency in the forward interrogation power to activate the CTAP tag when placed on surface of corroded and non-corroded steel samples. Results show that the presented system could communicate with sensor tag to detect corrosion up to 2 m of read monitoring range at the UHF RFID standard bandwidth with a sensitivity around of 13 MHz.

Publication metadata

Author(s): Soodmand S, Zhao A, Tian GY

Publication type: Article

Publication status: Published

Journal: IET Microwaves, Antennas and Propagation

Year: 2018

Volume: 12

Issue: 12

Pages: 1877-1884

Online publication date: 13/09/2018

Acceptance date: 03/05/2018

ISSN (print): 1751-8725

ISSN (electronic): 1751-8733

Publisher: Institution of Engineering and Technology


DOI: 10.1049/iet-map.2018.0143


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