Effect of a double-pancake coil configuration on reliable crack detection in curved thin-walled structures.
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| Title: | Effect of a double-pancake coil configuration on reliable crack detection in curved thin-walled structures. |
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| Authors: | Luo, Jin1,2, Luo, Jianwei1,2, Xu, Xiaojuan1,2, He, Cheng1,2, Wu, Jingmei3 szwujingmei@126.com |
| Source: | Insight: Non-Destructive Testing & Condition Monitoring. Feb2026, Vol. 68 Issue 2, p108-115. 8p. |
| Subjects: | Eddy current testing, Thin-walled structures, Electromagnetic theory, Simulation methods & models, Eddy currents (Electric) |
| Abstract: | The coil configuration of an eddy current probe is a key factor in determining the magnitude and distribution of induced currents in a test sample, thereby influencing the crack detection capability. This study investigates the effect of a double-pancake coil configuration on reliable crack detection in curved thin-walled structures. Three configurations, each with identical excitation and detection coil dimensions, are evaluated for detecting surface and back-surface cracks in an aluminium tube. The mutual inductance characteristics of two conventional configurations are first analysed using electromagnetic field theory, leading to the development of a zero-mutual-inductance design. Numerical simulations are conducted to compare electromagnetic field distributions and detection signal responses, enabling an assessment of detection sensitivity and suppression of lift-off variations. Experiments are then performed on an aluminium cylinder using an industrial six-axis robot scanning system. The results show that coil configuration entails a trade-off between lift-off noise suppression and crack detection sensitivity in curved thin-walled structures, with back-surface crack detection being more strongly affected by coil configuration than surface crack detection. [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: 191550362 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Effect of a double-pancake coil configuration on reliable crack detection in curved thin-walled structures. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Luo%2C+Jin%22">Luo, Jin</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Luo%2C+Jianwei%22">Luo, Jianwei</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Xu%2C+Xiaojuan%22">Xu, Xiaojuan</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22He%2C+Cheng%22">He, Cheng</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wu%2C+Jingmei%22">Wu, Jingmei</searchLink><relatesTo>3</relatesTo><i> szwujingmei@126.com</i> – 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>. Feb2026, Vol. 68 Issue 2, p108-115. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Eddy+current+testing%22">Eddy current testing</searchLink><br /><searchLink fieldCode="DE" term="%22Thin-walled+structures%22">Thin-walled structures</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+theory%22">Electromagnetic theory</searchLink><br /><searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink><br /><searchLink fieldCode="DE" term="%22Eddy+currents+%28Electric%29%22">Eddy currents (Electric)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The coil configuration of an eddy current probe is a key factor in determining the magnitude and distribution of induced currents in a test sample, thereby influencing the crack detection capability. This study investigates the effect of a double-pancake coil configuration on reliable crack detection in curved thin-walled structures. Three configurations, each with identical excitation and detection coil dimensions, are evaluated for detecting surface and back-surface cracks in an aluminium tube. The mutual inductance characteristics of two conventional configurations are first analysed using electromagnetic field theory, leading to the development of a zero-mutual-inductance design. Numerical simulations are conducted to compare electromagnetic field distributions and detection signal responses, enabling an assessment of detection sensitivity and suppression of lift-off variations. Experiments are then performed on an aluminium cylinder using an industrial six-axis robot scanning system. The results show that coil configuration entails a trade-off between lift-off noise suppression and crack detection sensitivity in curved thin-walled structures, with back-surface crack detection being more strongly affected by coil configuration than surface crack detection. [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.2026.68.2.108 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 108 Subjects: – SubjectFull: Eddy current testing Type: general – SubjectFull: Thin-walled structures Type: general – SubjectFull: Electromagnetic theory Type: general – SubjectFull: Simulation methods & models Type: general – SubjectFull: Eddy currents (Electric) Type: general Titles: – TitleFull: Effect of a double-pancake coil configuration on reliable crack detection in curved thin-walled structures. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Luo, Jin – PersonEntity: Name: NameFull: Luo, Jianwei – PersonEntity: Name: NameFull: Xu, Xiaojuan – PersonEntity: Name: NameFull: He, Cheng – PersonEntity: Name: NameFull: Wu, Jingmei IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 13542575 Numbering: – Type: volume Value: 68 – Type: issue Value: 2 Titles: – TitleFull: Insight: Non-Destructive Testing & Condition Monitoring Type: main |
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