An improved magnetiser for magnetic flux leakage inspection of 20 mm-thick steel plate.
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| Title: | An improved magnetiser for magnetic flux leakage inspection of 20 mm-thick steel plate. |
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| Authors: | Chen, Jiakun1, Hu, Bin2, Xu, Jiang1 |
| Source: | Insight: Non-Destructive Testing & Condition Monitoring. Jun2026, Vol. 68 Issue 6, p374-379. 6p. |
| Subjects: | Magnetic flux leakage, Magnetization, Finite element method, Nondestructive testing, Wave amplification |
| Abstract: | Large storage tanks often use 20 mm-thick steel plates as pressure-bearing parts, which need periodic non-destructive inspection to ensure their structural safety and operational reliability. It is difficult to saturate 20 mm-thick steel plate using conventional magnetisers due to their limited penetration capability, resulting in weak back-side defect signals, low signal-to-noise ratio and insufficient inspection sensitivity. To address this problem, this study proposes an improved magnetiser structure based on the Halbach array design. A finite element model was developed to simulate and analyse the axial component of the magnetic flux leakage (MFL) field of a spherical hole defect with a depth of 4 mm on the back side of a 20 mm-thick steel plate, thus verifying that the improved magnetiser enhances the detectability of the MFL field signals from the back-side defect, with a 170% increase in MFL field amplitude. An experimental platform was constructed and the results show that the improved magnetiser can detect the spherical hole defect with a depth of 4 mm on the back side of a 20 mm-thick steel plate at 15 mm lift-off of the improved magnetiser and 3 mm lift-off of the sensor. [ABSTRACT FROM AUTHOR] |
| Copyright of Insight: Non-Destructive Testing & Condition Monitoring is the property of British Institute of Non-Destructive Testing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 194538789 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: An improved magnetiser for magnetic flux leakage inspection of 20 mm-thick steel plate. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chen%2C+Jiakun%22">Chen, Jiakun</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hu%2C+Bin%22">Hu, Bin</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Xu%2C+Jiang%22">Xu, Jiang</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Insight%3A+Non-Destructive+Testing+%26+Condition+Monitoring%22">Insight: Non-Destructive Testing & Condition Monitoring</searchLink>. Jun2026, Vol. 68 Issue 6, p374-379. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Magnetic+flux+leakage%22">Magnetic flux leakage</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetization%22">Magnetization</searchLink><br /><searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Nondestructive+testing%22">Nondestructive testing</searchLink><br /><searchLink fieldCode="DE" term="%22Wave+amplification%22">Wave amplification</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Large storage tanks often use 20 mm-thick steel plates as pressure-bearing parts, which need periodic non-destructive inspection to ensure their structural safety and operational reliability. It is difficult to saturate 20 mm-thick steel plate using conventional magnetisers due to their limited penetration capability, resulting in weak back-side defect signals, low signal-to-noise ratio and insufficient inspection sensitivity. To address this problem, this study proposes an improved magnetiser structure based on the Halbach array design. A finite element model was developed to simulate and analyse the axial component of the magnetic flux leakage (MFL) field of a spherical hole defect with a depth of 4 mm on the back side of a 20 mm-thick steel plate, thus verifying that the improved magnetiser enhances the detectability of the MFL field signals from the back-side defect, with a 170% increase in MFL field amplitude. An experimental platform was constructed and the results show that the improved magnetiser can detect the spherical hole defect with a depth of 4 mm on the back side of a 20 mm-thick steel plate at 15 mm lift-off of the improved magnetiser and 3 mm lift-off of the sensor. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Insight: Non-Destructive Testing & Condition Monitoring is the property of British Institute of Non-Destructive Testing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1784/insi.2026.68.6.374 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 374 Subjects: – SubjectFull: Magnetic flux leakage Type: general – SubjectFull: Magnetization Type: general – SubjectFull: Finite element method Type: general – SubjectFull: Nondestructive testing Type: general – SubjectFull: Wave amplification Type: general Titles: – TitleFull: An improved magnetiser for magnetic flux leakage inspection of 20 mm-thick steel plate. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chen, Jiakun – PersonEntity: Name: NameFull: Hu, Bin – PersonEntity: Name: NameFull: Xu, Jiang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 13542575 Numbering: – Type: volume Value: 68 – Type: issue Value: 6 Titles: – TitleFull: Insight: Non-Destructive Testing & Condition Monitoring Type: main |
| ResultId | 1 |
