Referencing technique for phase detection in eddy current evaluation

Authors

  • N.A. Nadzri Faculty of Electrical & Electronics Engineering Technology, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • M.M. Saari Faculty of Electrical & Electronics Engineering Technology, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • M.A.H.P. Zaini Faculty of Electrical & Electronics Engineering Technology, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • Z.A. Aziz Faculty of Electrical & Electronics Engineering Technology, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia

DOI:

https://doi.org/10.15282/jmes.15.4.2021.13.0679

Keywords:

Eddy current testing, Anisotropic Magnet Resistance, crack, steel

Abstract

This paper presents an eddy current testing (ECT) method with a different type of referencing technique for crack detection in carbon steel plate by using two Anisotropic Magnet Resistance (AMR) sensors to detect and evaluate the artificial cracks and to study the output signal's characteristics of each technique. The experiment setup of the magnetic scanning device and the measurement mode is included. Based on these three techniques that have been used, it shown that differential technique with the condition of the required reference signal must be dynamic from one point to one point was the best way to implement in the ECT method. The line scanning results indicate that performing these three techniques can be used to estimate the position of the slits, however, for 2-D mapping, it is shown that the differential technique is a preferable technique where it can remove the noise response, and at the same time, it generates a clear image of the crack. It is predicted that the developed ECT probe using a differential technique can be used as a technique to estimate the characteristic of defects in a metal plate.

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Published

2021-12-15

How to Cite

[1]
N. A. Nadzri, M. M. Saari, M. A. H. P. Zaini, and Z. Abd Aziz, “Referencing technique for phase detection in eddy current evaluation”, JMES, vol. 15, no. 4, pp. 8608–8616, Dec. 2021.