Flexible Floral Eddy Current Probe for Detecting Flaws in Metal Plate

Saibo She; Yunze He; Yifang Chen; Tomasz Chady

doi:10.1109/jsen.2020.2995472

Flexible Floral Eddy Current Probe for Detecting Flaws in Metal Plate

Saibo She, Yunze He, Yifang Chen, Tomasz Chady

Department of Electrical & Electronic Engineering

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

Abstract

In this work, multiple floral eddy current probes (FECP) are proposed. FECP consists of a detection coil and a plurality of symmetric excitation coils, and due to the number of excitation coils, it could be classified into 4-coils, 6-coils, 8-coils, or 10-coils FECP. Due to the innovation of its configuration that transmitter (TX) coils are successively connected in reverse order and distributed symmetrically around receiver (RX) coil, the proposed new probe is not only less sensitive to the change of the lift-off distance but also has high accuracy and sensitivity of detection and could resist vibration interference. In this paper, the theoretical model of FECP is established, and simulation and experiment verification are carried out respectively. Firstly, the lift-off effect is studied. Moreover, an aluminum tested plate with artificial flaws is used to evaluate the performance of different-type of flexible FECP, which shows higher sensitivity in flaws than the conventional single coil.

Original language	English
Pages (from-to)	10521-10529
Number of pages	9
Journal	IEEE Sensors Journal
Volume	20
Issue number	18
Early online date	18 May 2020
DOIs	https://doi.org/10.1109/jsen.2020.2995472
Publication status	Published - 15 Sept 2020

Keywords

lift-off effect
eddy current testing
flexible probe
sensitivity
crack detection

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10.1109/jsen.2020.2995472

Cite this

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title = "Flexible Floral Eddy Current Probe for Detecting Flaws in Metal Plate",

abstract = "In this work, multiple floral eddy current probes (FECP) are proposed. FECP consists of a detection coil and a plurality of symmetric excitation coils, and due to the number of excitation coils, it could be classified into 4-coils, 6-coils, 8-coils, or 10-coils FECP. Due to the innovation of its configuration that transmitter (TX) coils are successively connected in reverse order and distributed symmetrically around receiver (RX) coil, the proposed new probe is not only less sensitive to the change of the lift-off distance but also has high accuracy and sensitivity of detection and could resist vibration interference. In this paper, the theoretical model of FECP is established, and simulation and experiment verification are carried out respectively. Firstly, the lift-off effect is studied. Moreover, an aluminum tested plate with artificial flaws is used to evaluate the performance of different-type of flexible FECP, which shows higher sensitivity in flaws than the conventional single coil. ",

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author = "Saibo She and Yunze He and Yifang Chen and Tomasz Chady",

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T1 - Flexible Floral Eddy Current Probe for Detecting Flaws in Metal Plate

AU - She, Saibo

AU - He, Yunze

AU - Chen, Yifang

AU - Chady, Tomasz

PY - 2020/9/15

Y1 - 2020/9/15

N2 - In this work, multiple floral eddy current probes (FECP) are proposed. FECP consists of a detection coil and a plurality of symmetric excitation coils, and due to the number of excitation coils, it could be classified into 4-coils, 6-coils, 8-coils, or 10-coils FECP. Due to the innovation of its configuration that transmitter (TX) coils are successively connected in reverse order and distributed symmetrically around receiver (RX) coil, the proposed new probe is not only less sensitive to the change of the lift-off distance but also has high accuracy and sensitivity of detection and could resist vibration interference. In this paper, the theoretical model of FECP is established, and simulation and experiment verification are carried out respectively. Firstly, the lift-off effect is studied. Moreover, an aluminum tested plate with artificial flaws is used to evaluate the performance of different-type of flexible FECP, which shows higher sensitivity in flaws than the conventional single coil.

AB - In this work, multiple floral eddy current probes (FECP) are proposed. FECP consists of a detection coil and a plurality of symmetric excitation coils, and due to the number of excitation coils, it could be classified into 4-coils, 6-coils, 8-coils, or 10-coils FECP. Due to the innovation of its configuration that transmitter (TX) coils are successively connected in reverse order and distributed symmetrically around receiver (RX) coil, the proposed new probe is not only less sensitive to the change of the lift-off distance but also has high accuracy and sensitivity of detection and could resist vibration interference. In this paper, the theoretical model of FECP is established, and simulation and experiment verification are carried out respectively. Firstly, the lift-off effect is studied. Moreover, an aluminum tested plate with artificial flaws is used to evaluate the performance of different-type of flexible FECP, which shows higher sensitivity in flaws than the conventional single coil.

KW - lift-off effect

KW - eddy current testing

KW - flexible probe

KW - sensitivity

KW - crack detection

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JO - IEEE Sensors Journal

JF - IEEE Sensors Journal

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ER -

Flexible Floral Eddy Current Probe for Detecting Flaws in Metal Plate

Abstract

Keywords

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