Determination of surface crack orientation based on thin-skin regime using triple-coil drive-pickup eddy-current sensor

Mingyang Lu; Xiaobai Meng; Ruochen Huang; Liming Chen; Zezhi Tang; Junshi Li; Anthony Peyton; Wuliang Yin

doi:10.1109/TIM.2020.3044729

Determination of surface crack orientation based on thin-skin regime using triple-coil drive-pickup eddy-current sensor

Mingyang Lu, Xiaobai Meng, Ruochen Huang, Liming Chen, Zezhi Tang, Junshi Li, Anthony Peyton, Wuliang Yin

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Abstract

Electromagnetic sensors have been used for inspecting small surface defects of metals. Based on the eddy-current (EC) thin-skin regime, a revised algorithm is proposed for a triple-coil drive-pickup EC sensor scanning over long surface crack slots (10 mm) with different rotary angles. The method is validated by the voltage measurement of the designed EC sensor scanning over a benchmark (ferromagnetic) steel with surface defects of different depths and rotary angles. With an additional sensing coil for the designed EC sensor, the defect angle (or orientation) can be measured without spatially and coaxially rotating the excitation coil. By referring to the voltage change (due to the defect) diagram (voltage sum versus voltage different) of two sensing pairs, the rotary angle of the surface crack is retrieved with a maximum residual deviation of 3.5%.

Original language	English
Article number	9293267
Pages (from-to)	1-9
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	70
DOIs	https://doi.org/10.1109/TIM.2020.3044729
Publication status	Published - 14 Dec 2020

Keywords

Angled crack
defect orientation
eddy-current (EC) sensor
nondestructive testing
thin-skin regime

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10.1109/TIM.2020.3044729

Determination of surface crack orientation based on thin-skin regime using triple-coil drive-pickup eddy-current sensorAccepted author manuscript, 4.25 MB

Cite this

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title = "Determination of surface crack orientation based on thin-skin regime using triple-coil drive-pickup eddy-current sensor",

abstract = "Electromagnetic sensors have been used for inspecting small surface defects of metals. Based on the eddy-current (EC) thin-skin regime, a revised algorithm is proposed for a triple-coil drive-pickup EC sensor scanning over long surface crack slots (10 mm) with different rotary angles. The method is validated by the voltage measurement of the designed EC sensor scanning over a benchmark (ferromagnetic) steel with surface defects of different depths and rotary angles. With an additional sensing coil for the designed EC sensor, the defect angle (or orientation) can be measured without spatially and coaxially rotating the excitation coil. By referring to the voltage change (due to the defect) diagram (voltage sum versus voltage different) of two sensing pairs, the rotary angle of the surface crack is retrieved with a maximum residual deviation of 3.5%.",

keywords = "Angled crack, defect orientation, eddy-current (EC) sensor, nondestructive testing, thin-skin regime",

author = "Mingyang Lu and Xiaobai Meng and Ruochen Huang and Liming Chen and Zezhi Tang and Junshi Li and Anthony Peyton and Wuliang Yin",

note = "Funding Information: Manuscript received October 14, 2020; revised November 27, 2020; accepted December 7, 2020. Date of publication December 14, 2020; date of current version January 5, 2021. This work was supported by the U.K. Engineering and Physical Sciences Research Council (EPSRC)] [Real-time In-line Microstructural Engineering (RIME)] under Grant EP/P027237/1. The Associate Editor coordinating the review process was Seyed Hossein H. Sadeghi. (Corresponding authors: Mingyang Lu; Wuliang Yin.) Mingyang Lu, Ruochen Huang, Liming Chen, Zezhi Tang, Junshi Li, Anthony Peyton, and Wuliang Yin are with the School of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL, U.K. (e-mail: [email protected]; [email protected]). Publisher Copyright: {\textcopyright} 1963-2012 IEEE.",

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doi = "10.1109/TIM.2020.3044729",

language = "English",

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journal = "IEEE Transactions on Instrumentation and Measurement ",

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AU - Lu, Mingyang

AU - Meng, Xiaobai

AU - Huang, Ruochen

AU - Chen, Liming

AU - Tang, Zezhi

AU - Li, Junshi

AU - Peyton, Anthony

AU - Yin, Wuliang

N1 - Funding Information: Manuscript received October 14, 2020; revised November 27, 2020; accepted December 7, 2020. Date of publication December 14, 2020; date of current version January 5, 2021. This work was supported by the U.K. Engineering and Physical Sciences Research Council (EPSRC)] [Real-time In-line Microstructural Engineering (RIME)] under Grant EP/P027237/1. The Associate Editor coordinating the review process was Seyed Hossein H. Sadeghi. (Corresponding authors: Mingyang Lu; Wuliang Yin.) Mingyang Lu, Ruochen Huang, Liming Chen, Zezhi Tang, Junshi Li, Anthony Peyton, and Wuliang Yin are with the School of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL, U.K. (e-mail: [email protected]; [email protected]). Publisher Copyright: © 1963-2012 IEEE.

PY - 2020/12/14

Y1 - 2020/12/14

N2 - Electromagnetic sensors have been used for inspecting small surface defects of metals. Based on the eddy-current (EC) thin-skin regime, a revised algorithm is proposed for a triple-coil drive-pickup EC sensor scanning over long surface crack slots (10 mm) with different rotary angles. The method is validated by the voltage measurement of the designed EC sensor scanning over a benchmark (ferromagnetic) steel with surface defects of different depths and rotary angles. With an additional sensing coil for the designed EC sensor, the defect angle (or orientation) can be measured without spatially and coaxially rotating the excitation coil. By referring to the voltage change (due to the defect) diagram (voltage sum versus voltage different) of two sensing pairs, the rotary angle of the surface crack is retrieved with a maximum residual deviation of 3.5%.

AB - Electromagnetic sensors have been used for inspecting small surface defects of metals. Based on the eddy-current (EC) thin-skin regime, a revised algorithm is proposed for a triple-coil drive-pickup EC sensor scanning over long surface crack slots (10 mm) with different rotary angles. The method is validated by the voltage measurement of the designed EC sensor scanning over a benchmark (ferromagnetic) steel with surface defects of different depths and rotary angles. With an additional sensing coil for the designed EC sensor, the defect angle (or orientation) can be measured without spatially and coaxially rotating the excitation coil. By referring to the voltage change (due to the defect) diagram (voltage sum versus voltage different) of two sensing pairs, the rotary angle of the surface crack is retrieved with a maximum residual deviation of 3.5%.

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KW - defect orientation

KW - eddy-current (EC) sensor

KW - nondestructive testing

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Determination of surface crack orientation based on thin-skin regime using triple-coil drive-pickup eddy-current sensor

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Electromagnetic Sensing Group

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Determination of surface crack orientation based on thin-skin regime using triple-coil drive-pickup eddy-current sensor

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Electromagnetic Sensing Group

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