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Notice of retraction
Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 35, Number 8(2) (2023)
Copyright(C) MYU K.K.
pp. 2831-2843
S&M3358 Research Paper of Special Issue
https://doi.org/10.18494/SAM4285
Published in advance: March 9, 2023
Published: August 23, 2023

Differential Triple Coils for Rail-bottom Flaw Detection Using Single-cycle Demodulation [PDF]

Yong Li, Liyun Ou, Na Li, and Zhe Tan

(Received January 4, 2023; Accepted February 20, 2023)

Keywords: rail-bottom flaw detection, differential triple coils, single-cycle demodulation, online detection

To meet the requirements of rail-bottom flaw detection, we use a differential-triple-coil sensor at low frequencies to detect rail-bottom flaws. Aiming at its online application to railways, we propose a single-cycle demodulation algorithm. To increase the ability to remove multiple interference signals in an electromagnetic environment, we analyze the anti-interference performance of the proposed algorithm in the frequency domain. We also discuss a method of achieving high anti-noise performance in rail-bottom flaw detection. In addition, we form artificial horizontal rail-bottom flaws in a standard rail specimen and carry out experiments on four horizontal rail-bottom flaws with different depths using the embedded inspection system. The experimental results demonstrate that the differential-triple-coil sensor with the proposed single-cycle demodulation algorithm can be used for horizontal rail-bottom flaw detection. Furthermore, horizontal rail-bottom flaws with a depth of less than 7 mm can be detected.

Corresponding author: Na Li


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This work is licensed under a Creative Commons Attribution 4.0 International License.

Cite this article
Yong Li, Liyun Ou, Na Li, and Zhe Tan, Differential Triple Coils for Rail-bottom Flaw Detection Using Single-cycle Demodulation, Sens. Mater., Vol. 35, No. 8, 2023, p. 2831-2843.



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