A method for detecting defects in metallic plates utilising bimodal electromagnetic acoustic transducers.
Saved in:
| Title: | A method for detecting defects in metallic plates utilising bimodal electromagnetic acoustic transducers. |
|---|---|
| Authors: | Shi, Xiuli1, Zhang, Lei1, Li, Qiangxin2 1521273922@qq.com, Xiao, Qi3 2410319@stu.neu.edu.cn |
| Source: | Insight: Non-Destructive Testing & Condition Monitoring. May2026, Vol. 68 Issue 5, p312-318. 7p. |
| Subjects: | Acoustic transducers, Ultrasonic testing, Iron & steel plates, Pipeline corrosion, Steel, Pipeline inspection, Finite element method, Nondestructive testing |
| Abstract: | High-strength X80 steel is extensively used in modern long-distance oil and gas pipelines. Prolonged exposure to harsh environments leads to material loss, primarily through corrosion under insulation or at coating defects. This wall thinning compromises structural integrity and can lead to catastrophic failure. Conventional piezoelectric ultrasonic testing (UT) is widely employed for in-service pipeline inspection; however, its performance can be limited under high-temperature, rough or coated surface conditions, where maintaining consistent acoustic coupling with liquid couplants is challenging. In contrast, electromagnetic acoustic transducers (EMATs) enable non-contact operation and eliminate the need for surface preparation. However, most existing bulk-wave EMATs are limited to exciting a single ultrasonic wave mode, either longitudinal waves or transverse waves, which restricts their defect characterisation ability. To address this issue, a bimodal EMAT is developed that integrates a U-shaped permanent magnetiser with spatially distributed coils within a closed magnetic circuit. The design employs a common magnetic field with tailored components to concurrently generate and receive both longitudinal and transverse waves. A finite element model (FEM) is developed to assess the influence of defects in X80 steel plates on EMAT signals. Experimental results demonstrate that the bimodal EMAT can simultaneously excite and receive the two wave types, enabling accurate defect-depth quantification. By cross-validating the measurements derived from each wave mode, potential misinterpretations of defect presence or absence are effectively mitigated. [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 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 193861394 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: A method for detecting defects in metallic plates utilising bimodal electromagnetic acoustic transducers. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Shi%2C+Xiuli%22">Shi, Xiuli</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Lei%22">Zhang, Lei</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Li%2C+Qiangxin%22">Li, Qiangxin</searchLink><relatesTo>2</relatesTo><i> 1521273922@qq.com</i><br /><searchLink fieldCode="AR" term="%22Xiao%2C+Qi%22">Xiao, Qi</searchLink><relatesTo>3</relatesTo><i> 2410319@stu.neu.edu.cn</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>. May2026, Vol. 68 Issue 5, p312-318. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Acoustic+transducers%22">Acoustic transducers</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+testing%22">Ultrasonic testing</searchLink><br /><searchLink fieldCode="DE" term="%22Iron+%26+steel+plates%22">Iron & steel plates</searchLink><br /><searchLink fieldCode="DE" term="%22Pipeline+corrosion%22">Pipeline corrosion</searchLink><br /><searchLink fieldCode="DE" term="%22Steel%22">Steel</searchLink><br /><searchLink fieldCode="DE" term="%22Pipeline+inspection%22">Pipeline inspection</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> – Name: Abstract Label: Abstract Group: Ab Data: High-strength X80 steel is extensively used in modern long-distance oil and gas pipelines. Prolonged exposure to harsh environments leads to material loss, primarily through corrosion under insulation or at coating defects. This wall thinning compromises structural integrity and can lead to catastrophic failure. Conventional piezoelectric ultrasonic testing (UT) is widely employed for in-service pipeline inspection; however, its performance can be limited under high-temperature, rough or coated surface conditions, where maintaining consistent acoustic coupling with liquid couplants is challenging. In contrast, electromagnetic acoustic transducers (EMATs) enable non-contact operation and eliminate the need for surface preparation. However, most existing bulk-wave EMATs are limited to exciting a single ultrasonic wave mode, either longitudinal waves or transverse waves, which restricts their defect characterisation ability. To address this issue, a bimodal EMAT is developed that integrates a U-shaped permanent magnetiser with spatially distributed coils within a closed magnetic circuit. The design employs a common magnetic field with tailored components to concurrently generate and receive both longitudinal and transverse waves. A finite element model (FEM) is developed to assess the influence of defects in X80 steel plates on EMAT signals. Experimental results demonstrate that the bimodal EMAT can simultaneously excite and receive the two wave types, enabling accurate defect-depth quantification. By cross-validating the measurements derived from each wave mode, potential misinterpretations of defect presence or absence are effectively mitigated. [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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=193861394 |
| RecordInfo | BibRecord: BibEntity: Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 312 Subjects: – SubjectFull: Acoustic transducers Type: general – SubjectFull: Ultrasonic testing Type: general – SubjectFull: Iron & steel plates Type: general – SubjectFull: Pipeline corrosion Type: general – SubjectFull: Steel Type: general – SubjectFull: Pipeline inspection Type: general – SubjectFull: Finite element method Type: general – SubjectFull: Nondestructive testing Type: general Titles: – TitleFull: A method for detecting defects in metallic plates utilising bimodal electromagnetic acoustic transducers. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Shi, Xiuli – PersonEntity: Name: NameFull: Zhang, Lei – PersonEntity: Name: NameFull: Li, Qiangxin – PersonEntity: Name: NameFull: Xiao, Qi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 13542575 Numbering: – Type: volume Value: 68 – Type: issue Value: 5 Titles: – TitleFull: Insight: Non-Destructive Testing & Condition Monitoring Type: main |
| ResultId | 1 |
