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Yoke-Type Elasto-Magnetic Sensor-Based Tension Force Monitoring Method for Enhancement of Field Applicability.

Ho-Jun Lee1, Sae-Byeok Kyung1, Ju-Won Kim2

  • 1Department of Nuclear · Energy System Engineering, Graduate School, Dongguk University, Gyeongju 38066, Republic of Korea.

Sensors (Basel, Switzerland)
|June 19, 2024
PubMed
Summary

A novel yoke-type elasto-magnetic (E/M) sensor effectively monitors tension in structural members non-destructively. This improved sensor overcomes limitations of traditional designs, ensuring structural safety through reliable tension force estimation.

Keywords:
linear regression analysistension force monitoringwireless communicationyoke-type elasto-magnetic sensor

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Area of Science:

  • Structural Engineering
  • Materials Science
  • Sensor Technology

Background:

  • Tension members are critical for structural stability in bridges, subsea, and aerospace applications.
  • Abnormal tensile strength in these members poses collapse risks, necessitating continuous monitoring.
  • Existing elasto-magnetic (E/M) sensors have limitations for in-situ applications due to their solenoid structure.

Purpose of the Study:

  • To develop and validate an improved elasto-magnetic (E/M) sensor for non-destructive tension monitoring.
  • To overcome the application limitations of traditional solenoid-type E/M sensors.
  • To enable reliable tension force estimation in critical structural components.

Main Methods:

  • A yoke-type E/M sensor was designed and numerically simulated using ANSYS Maxwell for magnetization performance.
  • A prototype yoke-type E/M sensor was manufactured and tested.
  • Induced voltage signals were measured wirelessly using DAQ as tension increased from 0 to 10 tons.
  • Signal analysis focused on the peak-to-peak voltage values to correlate with applied tension.

Main Results:

  • The yoke-type E/M sensor demonstrated reliable signal changes corresponding to applied tension.
  • Numerical simulations confirmed the sensor's magnetization performance.
  • Measured signal patterns showed consistency with traditional solenoid-type E/M sensors.
  • The sensor successfully estimated tension force in the tested range (0-10 tons).

Conclusions:

  • The proposed yoke-type E/M sensor is effective for non-destructive tension monitoring of tension members.
  • This technology offers a promising solution for ensuring structural safety in various engineering fields.
  • Further optimization and usability studies are recommended for specific applications.