Nondestructive testing of prestressed ground anchors using ultrasonics: theory, simulation, and experiments.
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| Title: | Nondestructive testing of prestressed ground anchors using ultrasonics: theory, simulation, and experiments. |
|---|---|
| Authors: | He, Weiming1,2 (AUTHOR) weminhe@163.com, Cai, Qiang1,2 (AUTHOR), Jiang, Zhaoqun1,2 (AUTHOR), Zhang, Hangtian1,3 (AUTHOR) |
| Source: | Nondestructive Testing & Evaluation. Oct2026, Vol. 41 Issue 10, p6381-6412. 32p. |
| Subjects: | Nondestructive testing, Ultrasonics, Residual stresses, Computer simulation, Ultrasonic equipment, Electromagnetic wave reflection |
| Abstract: | Prestressed ground anchors have been widely used in numerous slopes to prevent slope failure. However, the inevitable loss of prestress can affect the long-term operational safety of slopes in the field of prevention and control engineering. This study analysed the deterioration of the external anchor head and its main causes based on a field investigation, and a theoretical model for the non-destructive testing (NDT) of prestressed slope anchors using ultrasonics was derived. Subsequently, the stress and displacement distribution characteristics of the anchor head were analysed by numerical simulation. Two ultrasonic sensors (2.5 MHz and 5.0 MHz) were employed to test the prestress of the anchor, and a relationship between the energy and prestress was established. The results showed that the prestress can be determined by analysing the reflection waves, the energy of which decreased nonlinearly with increasing load, and the energy – prestress relationship could be well fitted using an exponential function. The 2.5 MHz ultrasonic sensor outperformed the 5.0 MHz ultrasonic sensor, and the third reflection wave (RW3) exhibited the highest stability and best fitting, making it suitable for establishing the relationship between the energy and prestress of the ground anchor. This study provides references for the NDT of prestressed ground anchors. [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.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 197377349 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Nondestructive testing of prestressed ground anchors using ultrasonics: theory, simulation, and experiments. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22He%2C+Weiming%22">He, Weiming</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> weminhe@163.com</i><br /><searchLink fieldCode="AR" term="%22Cai%2C+Qiang%22">Cai, Qiang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Zhaoqun%22">Jiang, Zhaoqun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Hangtian%22">Zhang, Hangtian</searchLink><relatesTo>1,3</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Nondestructive+Testing+%26+Evaluation%22">Nondestructive Testing & Evaluation</searchLink>. Oct2026, Vol. 41 Issue 10, p6381-6412. 32p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Nondestructive+testing%22">Nondestructive testing</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonics%22">Ultrasonics</searchLink><br /><searchLink fieldCode="DE" term="%22Residual+stresses%22">Residual stresses</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+equipment%22">Ultrasonic equipment</searchLink><br /><searchLink fieldCode="DE" term="%22Electromagnetic+wave+reflection%22">Electromagnetic wave reflection</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Prestressed ground anchors have been widely used in numerous slopes to prevent slope failure. However, the inevitable loss of prestress can affect the long-term operational safety of slopes in the field of prevention and control engineering. This study analysed the deterioration of the external anchor head and its main causes based on a field investigation, and a theoretical model for the non-destructive testing (NDT) of prestressed slope anchors using ultrasonics was derived. Subsequently, the stress and displacement distribution characteristics of the anchor head were analysed by numerical simulation. Two ultrasonic sensors (2.5 MHz and 5.0 MHz) were employed to test the prestress of the anchor, and a relationship between the energy and prestress was established. The results showed that the prestress can be determined by analysing the reflection waves, the energy of which decreased nonlinearly with increasing load, and the energy – prestress relationship could be well fitted using an exponential function. The 2.5 MHz ultrasonic sensor outperformed the 5.0 MHz ultrasonic sensor, and the third reflection wave (RW3) exhibited the highest stability and best fitting, making it suitable for establishing the relationship between the energy and prestress of the ground anchor. This study provides references for the NDT of prestressed ground anchors. [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: 10.1080/10589759.2025.2566777 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 32 StartPage: 6381 Subjects: – SubjectFull: Nondestructive testing Type: general – SubjectFull: Ultrasonics Type: general – SubjectFull: Residual stresses Type: general – SubjectFull: Computer simulation Type: general – SubjectFull: Ultrasonic equipment Type: general – SubjectFull: Electromagnetic wave reflection Type: general Titles: – TitleFull: Nondestructive testing of prestressed ground anchors using ultrasonics: theory, simulation, and experiments. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: He, Weiming – PersonEntity: Name: NameFull: Cai, Qiang – PersonEntity: Name: NameFull: Jiang, Zhaoqun – PersonEntity: Name: NameFull: Zhang, Hangtian IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 10589759 Numbering: – Type: volume Value: 41 – Type: issue Value: 10 Titles: – TitleFull: Nondestructive Testing & Evaluation Type: main |
| ResultId | 1 |
