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Characteristics of T(0, 1) Guided-Wave Point-Focusing Electromagnetic Acoustic Transducer for Pipe Inspection

Huang, Songling; Sun, Hongyu; Shen, Gongtian; Wang, Baoxuan; Wang, Qing; Zou, Jun; Wang, Shen

Characteristics of T(0, 1) Guided-Wave Point-Focusing Electromagnetic Acoustic Transducer for Pipe Inspection Thumbnail


Authors

Songling Huang

Hongyu Sun

Gongtian Shen

Jun Zou



Abstract

Electromagnetic acoustic transducers (EMATs) are widely used in the field of non-destructive testing (NDT) and non-destructive evaluation (NDE) due to their advantages of non-contact and applicability in complex environments. However, their low energy-conversion efficiency restricts their application in industrial testing. This work proposes a newly designed focusing EMAT based on the T(0, 1)-wave in a pipe to improve the energy conversion efficiency of EMATs. The focal length and defect width are investigated in this paper, and the advantages of the newly designed point-focusing transducer are shown in comparison with traditional unfocused transducers. Results show that the newly designed pipe focusing EMAT can increase the intensity of the defect reflection wave by around 60%, and the reflected wave intensity can be enhanced by 70% in the experiment when compared to the unfocused one.

Citation

Huang, S., Sun, H., Shen, G., Wang, B., Wang, Q., Zou, J., & Wang, S. (2020). Characteristics of T(0, 1) Guided-Wave Point-Focusing Electromagnetic Acoustic Transducer for Pipe Inspection. IEEE Sensors Journal, 20(6), 2895-2903. https://doi.org/10.1109/jsen.2019.2958953

Journal Article Type Article
Acceptance Date Dec 5, 2019
Online Publication Date Dec 13, 2019
Publication Date Mar 15, 2020
Deposit Date Mar 23, 2020
Publicly Available Date Mar 24, 2020
Journal IEEE Sensors Journal
Print ISSN 1530-437X
Electronic ISSN 1558-1748
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
Volume 20
Issue 6
Pages 2895-2903
DOI https://doi.org/10.1109/jsen.2019.2958953
Public URL https://durham-repository.worktribe.com/output/1274243

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Accepted Journal Article (700 Kb)
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