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Analytical Calculation of Induced Voltages of Uniform Eddy Current Probes Above a Moving Conductor

  • Siquan Zhang
  • Nathan Ida
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 506)

Abstract

Eddy-current testing is an important nondestructive testing method in defect detection and evaluation of conductive materials. In testing of moving multilayer conductive plates, a rectangular exciting coil is placed perpendicular to the conductor, and cylindrical or rectangular coils are positioned below the exciting coil serving as pick-up coils. Accurate theoretical expressions of the induced voltage variations in the pick-up coils are derived, and the influences of the two pick-up coils’ exciting frequency and moving speed to the induced voltages are evaluated and compared. The rectangular and cylindrical pick-up coils are also used in testing for flaws in the conductors. The analytical calculation results are verified with experimental results.

Keywords

Eddy-current testing Magnetic field sensors Induced voltage 

Notes

Acknowledgment

The authors would like to acknowledge the financial support by the National Natural Science Foundation of China (51175321) and the Shanghai Maritime University (20130463).

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2019

Authors and Affiliations

  • Siquan Zhang
    • 1
  • Nathan Ida
    • 2
  1. 1.Department of Electrical and AutomationShanghai Maritime UniversityShanghaiChina
  2. 2.Department of Electrical and Computer EngineeringThe University of AkronAkronUSA

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