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Wireless Passive Ultra High Frequency RFID Antenna Sensor for Surface Crack Monitoring and Quantitative Analysis.

Jun Zhang1, Bei Huang2, Gary Zhang3

  • 1School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China. junzhang@gdut.edu.cn.

Sensors (Basel, Switzerland)
|July 5, 2018
PubMed
Summary

Wireless passive sensors using ultra-high frequency (UHF) radio frequency identification (RFID) tag antennas offer a cost-effective solution for structural health monitoring. This study demonstrates their effectiveness in crack detection and characterization on aluminum samples.

Keywords:
antenna sensorcircular patchcrack characterizationradio frequency identification (RFID)structural health monitoring (SHM)ultra-high frequency (UHF)

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Structural Health Monitoring

Background:

  • The proliferation of large-scale infrastructure necessitates advanced methods for permanent, in-service health monitoring.
  • Wireless, passive, and cost-effective sensors are crucial for efficient structural health monitoring (SHM).
  • Ultra-high frequency (UHF) radio frequency identification (RFID) tag antennas are emerging as promising candidates for SHM applications.

Purpose of the Study:

  • To investigate the use of a circular patch antenna sensor with an open rectangular window for crack monitoring.
  • To quantitatively analyze the sensing mechanism and understand the principles of antenna-based crack sensing.
  • To evaluate the robustness of the sensing technique concerning crack position variations.

Main Methods:

  • Utilized a circular patch antenna sensor with a specific window design for crack detection.
  • Performed quantitative analysis of the sensing mechanism, including mode analysis.
  • Examined the sensor's performance with varying crack positions on an aluminum sample.

Main Results:

  • The study successfully demonstrated the sensing mechanism for crack detection using the designed antenna.
  • Mode analysis provided insights into the intrinsic principles of antenna-based crack sensing.
  • Experimental results showed reasonable sensitivity and resolution in characterizing cracks.
  • The robustness of the sensor was assessed against variations in crack position.

Conclusions:

  • The developed UHF RFID tag antenna sensor shows potential for effective crack monitoring in structures.
  • The quantitative study and mode analysis elucidate the fundamental sensing principles.
  • The sensor exhibits acceptable sensitivity, resolution, and robustness for practical SHM applications.