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Wireless passive ultra high frequency RFID antenna sensor for surface crack monitoring and quantitative analysis

Lookup NU author(s): Dr Jun Zhang, Professor Gui Yun TianORCiD



This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


© 2018 by the authors. Licensee MDPI, Basel, Switzerland. An exponential increase in large-scale infrastructure facilitates the development of wireless passive sensors for permanent installation and in-service health monitoring. Due to their wireless, passive and cost-effective characteristics, ultra-high frequency (UHF) radio frequency identification (RFID) tag antenna based sensors are receiving increasing attention for structural health monitoring (SHM). This paper uses a circular patch antenna sensor with an open rectangular window for crack monitoring. The sensing mechanism is quantitatively studied in conjunction with a mode analysis, which can uncover the intrinsic principle for turning an antenna into a crack sensor. The robustness of the feature is examined when the variation of crack position associated with an aluminum sample and the antenna sensor is considered. The experimental results demonstrate a reasonable sensitivity and resolution for crack characterization.

Publication metadata

Author(s): Zhang J, Huang B, Zhang G, Tian GY

Publication type: Article

Publication status: Published

Journal: Sensors

Year: 2018

Volume: 18

Issue: 7

Online publication date: 03/07/2018

Acceptance date: 29/06/2018

Date deposited: 23/07/2018

ISSN (print): 1424-8239

ISSN (electronic): 1424-8220

Publisher: MDPI AG


DOI: 10.3390/s18072130


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