Imaging a Weld Cross-Section Using a Novel Frequency Feature in Multi-Frequency Eddy Current Testing

Hanyang Xu, Mingyang Lu, Jorge Ricardo Salas Avila, Qian Zhao, Frank Zhou, Xiaobai Meng, Wuliang Yin

Research output: Contribution to journal › Article › peer-review

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Abstract

In this paper, a novel frequency feature (the frequency at which the real part of the inductance reaches a specified value) is proposed for imaging an X70 welding cross-section. It is derived that this frequency feature is related to the permeability of the sample and therefore the imaging results obtained from this feature is a reflection of the electromagnetic properties (in particular permeability) map of the sample. The resulted images are then compared with the weld macrograph and hardness map. The shape and contour of three weld zones (fusion zone, heat affected zone, and base metal) can be identified. This novel imaging method has a high sensitivity to microstructure changes and by adjusting the inductance value it crosses, the frequency range can be adjusted to suit a particular instrument capability.
Original languageEnglish
Pages (from-to)738-743
JournalInsight: Non-Destructive Testing and Condition Monitoring
Volume61
Issue number12
DOIs
Publication statusPublished - 1 Dec 2019

Keywords

  • NDT
  • weld inspection
  • ECT

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    • Electromagnetic Sensing Group

      Peyton, A. (PI), Fletcher, A. (Researcher), Daniels, D. (CoI), Conniffe, D. (PGR student), Podd, F. (PI), Davidson, J. (Researcher), Anderson, J. (Support team), Wilson, J. (Researcher), Marsh, L. (PI), O'Toole, M. (PI), Watson, S. (PGR student), Yin, W. (PI), Regan, A. (PGR student), Williams, K. (Researcher), Rana, S. (Researcher), Khalil, K. (PGR student), Hills, D. (PGR student), Whyte, C. (PGR student), Wang, C. (PGR student), Hodgskin-Brown, R. (PGR student), Dadkhahtehrani, F. (PGR student), Forster, S. (PGR student), Zhu, F. (PGR student), Yu, K. (PGR student), Xiong, L. (PGR student), Lu, T. (PGR student), Zhang, L. (PGR student), Lyu, R. (PGR student), Zhu, R. (PGR student), She, S. (PGR student), Meng, T. (PGR student), Pang, X. (PGR student), Zheng, X. (PGR student), Bai, X. (PGR student), Zou, X. (PGR student), Ding, Y. (PGR student), Shao, Y. (PGR student), Xia, Z. (PGR student), Zhang, Z. (PGR student), Khangerey, R. (PGR student) & Lawless, B. (Researcher)

      1/10/04 → …

      Project: Research

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