Eddy current testing of artificial submillimeter internal holes in laser powder bed fusion manufactured alloys.
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| Title: | Eddy current testing of artificial submillimeter internal holes in laser powder bed fusion manufactured alloys. |
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| Authors: | Xiao, Jiafeng1 (AUTHOR), Liu, Wenjie1 (AUTHOR), Li, Hui1,2 (AUTHOR) li_hui@whu.edu.cn, Huang, Yicang3 (AUTHOR) huangyicang0811@126.com, Shen, Shengnan1 (AUTHOR), Luo, Yaojin4 (AUTHOR) |
| Source: | Nondestructive Testing & Evaluation. Feb2026, Vol. 41 Issue 2, p803-822. 20p. |
| Subjects: | Eddy current testing, Manufacturing defects, Alloys, Three-dimensional printing, Selective laser melting, Electronic probes, Nondestructive testing |
| Abstract: | Laser powder bed fusion (LPBF) is one of the important processing methods for additive manufacturing (AM). However, the application of manufactured parts is limited by internal defects, thus hindering the development of the AM industry. Eddy current testing (ECT) technology plays a pivotal role in the detection of AM parts with micro defects due to the advantages of non-destructive and non-contact. In this work, an extremely small differential probe is designed, and the eddy current detection of submillimeter hole defects in three typical alloys (AlSi10Mg, Ti6Al4V and GH4169) is studied numerically and experimentally. A simulation model of ECT is established to investigate the effectiveness of the designed probe in detecting internal holes with diameters of 90, 150, 200 and 250 µm. First, the impact of excitation frequency and coil spacing on defect detection of the designed differential probe is investigated, providing theoretical guidance for differential probe design. The simulation results show that the designed probe can effectively detect defects in internal holes with a diameter of 90 µm, and that the normalised resistance of the three alloys increases with the increase in the hole diameter. Furthermore, internal hole defect samples of three typical alloys and a similar structure probe are fabricated, and the accuracy of simulation results is verified by experiments. Finally, the functional relationship between the size of internal hole defects and the EC response signal of three different alloys is investigated. Laser powder bed fusion is one of the important processing methods for additive manufacturing (AM). However, the application of manufactured parts is limited by internal defects. Eddy current testing (ECT) technology plays a pivotal role in the detection of AM parts with micro defects due to the advantages of non-destructive and non-contact. In this work, an extremely small differential probe is designed, and the eddy current detection of submillimeter hole defects in three typical alloys is studied numerically and experimentally. First, a simulation model of ECT is established to investigate the effectiveness of the designed probe in detecting internal holes with diameters of 90, 150, 200 and 250 µm. The simulation results show that the designed probe can effectively detect defects in internal holes with a diameter of 90 µm, and that the normalized resistance of the three alloys increases with the increase in the hole diameter. Furthermore, internal hole defect samples of three typical alloys and a similar structure probe are fabricated, and the accuracy of simulation results is verified by experiments. Finally, the functional relationship between the size of internal hole defects and the EC response signal of three different alloys is investigated. [ABSTRACT FROM AUTHOR] |
| Copyright of Nondestructive Testing & Evaluation is the property of Taylor & Francis Ltd 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.) | |
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| Header | DbId: egs DbLabel: Engineering Source An: 190955063 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Eddy current testing of artificial submillimeter internal holes in laser powder bed fusion manufactured alloys. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Xiao%2C+Jiafeng%22">Xiao, Jiafeng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Wenjie%22">Liu, Wenjie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Hui%22">Li, Hui</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> li_hui@whu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Huang%2C+Yicang%22">Huang, Yicang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> huangyicang0811@126.com</i><br /><searchLink fieldCode="AR" term="%22Shen%2C+Shengnan%22">Shen, Shengnan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luo%2C+Yaojin%22">Luo, Yaojin</searchLink><relatesTo>4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nondestructive+Testing+%26+Evaluation%22">Nondestructive Testing & Evaluation</searchLink>. Feb2026, Vol. 41 Issue 2, p803-822. 20p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Eddy+current+testing%22">Eddy current testing</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+defects%22">Manufacturing defects</searchLink><br /><searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Three-dimensional+printing%22">Three-dimensional printing</searchLink><br /><searchLink fieldCode="DE" term="%22Selective+laser+melting%22">Selective laser melting</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+probes%22">Electronic probes</searchLink><br /><searchLink fieldCode="DE" term="%22Nondestructive+testing%22">Nondestructive testing</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Laser powder bed fusion (LPBF) is one of the important processing methods for additive manufacturing (AM). However, the application of manufactured parts is limited by internal defects, thus hindering the development of the AM industry. Eddy current testing (ECT) technology plays a pivotal role in the detection of AM parts with micro defects due to the advantages of non-destructive and non-contact. In this work, an extremely small differential probe is designed, and the eddy current detection of submillimeter hole defects in three typical alloys (AlSi10Mg, Ti6Al4V and GH4169) is studied numerically and experimentally. A simulation model of ECT is established to investigate the effectiveness of the designed probe in detecting internal holes with diameters of 90, 150, 200 and 250 µm. First, the impact of excitation frequency and coil spacing on defect detection of the designed differential probe is investigated, providing theoretical guidance for differential probe design. The simulation results show that the designed probe can effectively detect defects in internal holes with a diameter of 90 µm, and that the normalised resistance of the three alloys increases with the increase in the hole diameter. Furthermore, internal hole defect samples of three typical alloys and a similar structure probe are fabricated, and the accuracy of simulation results is verified by experiments. Finally, the functional relationship between the size of internal hole defects and the EC response signal of three different alloys is investigated. Laser powder bed fusion is one of the important processing methods for additive manufacturing (AM). However, the application of manufactured parts is limited by internal defects. Eddy current testing (ECT) technology plays a pivotal role in the detection of AM parts with micro defects due to the advantages of non-destructive and non-contact. In this work, an extremely small differential probe is designed, and the eddy current detection of submillimeter hole defects in three typical alloys is studied numerically and experimentally. First, a simulation model of ECT is established to investigate the effectiveness of the designed probe in detecting internal holes with diameters of 90, 150, 200 and 250 µm. The simulation results show that the designed probe can effectively detect defects in internal holes with a diameter of 90 µm, and that the normalized resistance of the three alloys increases with the increase in the hole diameter. Furthermore, internal hole defect samples of three typical alloys and a similar structure probe are fabricated, and the accuracy of simulation results is verified by experiments. Finally, the functional relationship between the size of internal hole defects and the EC response signal of three different alloys is investigated. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Nondestructive Testing & Evaluation is the property of Taylor & Francis Ltd 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: 10.1080/10589759.2025.2474707 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 20 StartPage: 803 Subjects: – SubjectFull: Eddy current testing Type: general – SubjectFull: Manufacturing defects Type: general – SubjectFull: Alloys Type: general – SubjectFull: Three-dimensional printing Type: general – SubjectFull: Selective laser melting Type: general – SubjectFull: Electronic probes Type: general – SubjectFull: Nondestructive testing Type: general Titles: – TitleFull: Eddy current testing of artificial submillimeter internal holes in laser powder bed fusion manufactured alloys. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Xiao, Jiafeng – PersonEntity: Name: NameFull: Liu, Wenjie – PersonEntity: Name: NameFull: Li, Hui – PersonEntity: Name: NameFull: Huang, Yicang – PersonEntity: Name: NameFull: Shen, Shengnan – PersonEntity: Name: NameFull: Luo, Yaojin IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 10589759 Numbering: – Type: volume Value: 41 – Type: issue Value: 2 Titles: – TitleFull: Nondestructive Testing & Evaluation Type: main |
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