A Review of Magnetic Flux Leakage Nondestructive Testing
Magnetic flux leakage (MFL) testing is a widely used nondestructive testing (NDT) method for the inspection of ferromagnetic materials. This review paper presents the basic principles of MFL testing and summarizes the recent advances in MFL. An analytical expression for the leakage magnetic field ba...
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| Format: | Article |
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MDPI AG
2022-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/20/7362 |
| _version_ | 1797471692958728192 |
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| author | Bo Feng Jianbo Wu Hongming Tu Jian Tang Yihua Kang |
| author_facet | Bo Feng Jianbo Wu Hongming Tu Jian Tang Yihua Kang |
| author_sort | Bo Feng |
| collection | DOAJ |
| description | Magnetic flux leakage (MFL) testing is a widely used nondestructive testing (NDT) method for the inspection of ferromagnetic materials. This review paper presents the basic principles of MFL testing and summarizes the recent advances in MFL. An analytical expression for the leakage magnetic field based on the 3D magnetic dipole model is provided. Based on the model, the effects of defect size, defect orientation, and liftoff distance have been analyzed. Other influencing factors, such as magnetization strength, testing speed, surface roughness, and stress, have also been introduced. As the most important steps of MFL, the excitation method (a permanent magnet, DC, AC, pulsed) and sensing methods (Hall element, GMR, TMR, etc.), have been introduced in detail. Finally, the algorithms for the quantification of defects and the applications of MFL have been introduced. |
| first_indexed | 2024-03-09T19:52:47Z |
| format | Article |
| id | doaj.art-069095dd5ba74a89a85fd3952961266b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T19:52:47Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-069095dd5ba74a89a85fd3952961266b2023-11-24T01:05:40ZengMDPI AGMaterials1996-19442022-10-011520736210.3390/ma15207362A Review of Magnetic Flux Leakage Nondestructive TestingBo Feng0Jianbo Wu1Hongming Tu2Jian Tang3Yihua Kang4School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaSchool of Mechanical Engineering, Sichuan University, Chengdu 610065, ChinaSchool of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaSchool of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaMagnetic flux leakage (MFL) testing is a widely used nondestructive testing (NDT) method for the inspection of ferromagnetic materials. This review paper presents the basic principles of MFL testing and summarizes the recent advances in MFL. An analytical expression for the leakage magnetic field based on the 3D magnetic dipole model is provided. Based on the model, the effects of defect size, defect orientation, and liftoff distance have been analyzed. Other influencing factors, such as magnetization strength, testing speed, surface roughness, and stress, have also been introduced. As the most important steps of MFL, the excitation method (a permanent magnet, DC, AC, pulsed) and sensing methods (Hall element, GMR, TMR, etc.), have been introduced in detail. Finally, the algorithms for the quantification of defects and the applications of MFL have been introduced.https://www.mdpi.com/1996-1944/15/20/7362MFLNDTsensormagnetic dipole modelhigh speedliftoff |
| spellingShingle | Bo Feng Jianbo Wu Hongming Tu Jian Tang Yihua Kang A Review of Magnetic Flux Leakage Nondestructive Testing Materials MFL NDT sensor magnetic dipole model high speed liftoff |
| title | A Review of Magnetic Flux Leakage Nondestructive Testing |
| title_full | A Review of Magnetic Flux Leakage Nondestructive Testing |
| title_fullStr | A Review of Magnetic Flux Leakage Nondestructive Testing |
| title_full_unstemmed | A Review of Magnetic Flux Leakage Nondestructive Testing |
| title_short | A Review of Magnetic Flux Leakage Nondestructive Testing |
| title_sort | review of magnetic flux leakage nondestructive testing |
| topic | MFL NDT sensor magnetic dipole model high speed liftoff |
| url | https://www.mdpi.com/1996-1944/15/20/7362 |
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