Mechanism of Magnetic Permeability Perturbation in Magnetizing-Based Eddy Current Nondestructive Testing
DC magnetization is generally considered to suppress the usual local magnetic permeability variation and increase the penetration depth for magnetizing-based eddy current testing (MB-ECT) of ferromagnetic materials. In fact, such simple explanations lead to rough nondestructive evaluation and cause...
| Main Authors: | , , , , |
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| Format: | Article |
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MDPI AG
2022-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/7/2503 |
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| author | Zhiyang Deng Zhiheng Yu Zhongyu Yuan Xiaochun Song Yihua Kang |
| author_facet | Zhiyang Deng Zhiheng Yu Zhongyu Yuan Xiaochun Song Yihua Kang |
| author_sort | Zhiyang Deng |
| collection | DOAJ |
| description | DC magnetization is generally considered to suppress the usual local magnetic permeability variation and increase the penetration depth for magnetizing-based eddy current testing (MB-ECT) of ferromagnetic materials. In fact, such simple explanations lead to rough nondestructive evaluation and cause new neglected non-uniform magnetic characteristics. Hence, the “perturbation” of the internal magnetic field variation is analyzed using a magnetic dipole model and the mechanism of magnetic permeability perturbation in MB-ECT is revealed. The theoretical analysis and simulations show that a significant permeability perturbation always appears around a defect and presents opposite features with strong and weak magnetization. Furthermore, experimental results indicate that the hidden signal component arising from the local permeability perturbation is critical for both far-side surface and near-side surface defects in the MB-ECT method. |
| first_indexed | 2024-03-09T11:27:34Z |
| format | Article |
| id | doaj.art-71d8f3d43f124093aba1c7bd2a9585e7 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T11:27:34Z |
| publishDate | 2022-03-01 |
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| series | Sensors |
| spelling | doaj.art-71d8f3d43f124093aba1c7bd2a9585e72023-11-30T23:59:47ZengMDPI AGSensors1424-82202022-03-01227250310.3390/s22072503Mechanism of Magnetic Permeability Perturbation in Magnetizing-Based Eddy Current Nondestructive TestingZhiyang Deng0Zhiheng Yu1Zhongyu Yuan2Xiaochun Song3Yihua Kang4Key Laboratory of Modern Manufacture Quality Engineering, Hubei University of Technology, Wuhan 430068, ChinaKey Laboratory of Modern Manufacture Quality Engineering, Hubei University of Technology, Wuhan 430068, ChinaKey Laboratory of Modern Manufacture Quality Engineering, Hubei University of Technology, Wuhan 430068, ChinaKey Laboratory of Modern Manufacture Quality Engineering, Hubei University of Technology, Wuhan 430068, ChinaSchool of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaDC magnetization is generally considered to suppress the usual local magnetic permeability variation and increase the penetration depth for magnetizing-based eddy current testing (MB-ECT) of ferromagnetic materials. In fact, such simple explanations lead to rough nondestructive evaluation and cause new neglected non-uniform magnetic characteristics. Hence, the “perturbation” of the internal magnetic field variation is analyzed using a magnetic dipole model and the mechanism of magnetic permeability perturbation in MB-ECT is revealed. The theoretical analysis and simulations show that a significant permeability perturbation always appears around a defect and presents opposite features with strong and weak magnetization. Furthermore, experimental results indicate that the hidden signal component arising from the local permeability perturbation is critical for both far-side surface and near-side surface defects in the MB-ECT method.https://www.mdpi.com/1424-8220/22/7/2503magnetic permeability perturbationnon-destructive testing (NDT)magnetizing-based eddy current testing (MB-ECT)magnetic flux leakage (MFL)DC magnetization |
| spellingShingle | Zhiyang Deng Zhiheng Yu Zhongyu Yuan Xiaochun Song Yihua Kang Mechanism of Magnetic Permeability Perturbation in Magnetizing-Based Eddy Current Nondestructive Testing Sensors magnetic permeability perturbation non-destructive testing (NDT) magnetizing-based eddy current testing (MB-ECT) magnetic flux leakage (MFL) DC magnetization |
| title | Mechanism of Magnetic Permeability Perturbation in Magnetizing-Based Eddy Current Nondestructive Testing |
| title_full | Mechanism of Magnetic Permeability Perturbation in Magnetizing-Based Eddy Current Nondestructive Testing |
| title_fullStr | Mechanism of Magnetic Permeability Perturbation in Magnetizing-Based Eddy Current Nondestructive Testing |
| title_full_unstemmed | Mechanism of Magnetic Permeability Perturbation in Magnetizing-Based Eddy Current Nondestructive Testing |
| title_short | Mechanism of Magnetic Permeability Perturbation in Magnetizing-Based Eddy Current Nondestructive Testing |
| title_sort | mechanism of magnetic permeability perturbation in magnetizing based eddy current nondestructive testing |
| topic | magnetic permeability perturbation non-destructive testing (NDT) magnetizing-based eddy current testing (MB-ECT) magnetic flux leakage (MFL) DC magnetization |
| url | https://www.mdpi.com/1424-8220/22/7/2503 |
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