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Time-Domain Topological Energy Imaging Method of Concrete Cavity Defect by Lamb Wave
Joint Authors
Zhu, Wen-Fa
Shao, Wei
Peng, Le-Le
Fan, Guo-Peng
Chen, Xing-Jie
Zheng, Shu-Bin
Zhang, Hai-Yan
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-12-20
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
This paper presents an ultrasonic Lamb wave imaging method based on time-domain topological energy to address artifacts in the results of traditional ultrasound imaging methods.
This method is based on topological theory and the calculation of the direct and adjoint sound fields in a defect-free reference medium.
It focuses the direct and adjoint sound fields at the cavity defect using time reversal and their time-domain topological energy as the pixel values of the image to reduce the artifacts.
The physical mechanism of time-domain topological energy (TDTE) imaging is revealed by finite element simulation and experiment.
The feasibility of this method for multilayer concrete cavity defect imaging is verified.
Compared with the traditional synthetic aperture focusing technique (SAFT) imaging method, the numerical simulation and experimental results show that the method can overcome the influence of ultrasonic Lamb wave dispersion and locate cavity defects with high accuracy and few artifacts.
These features indicate the potential of the method in imaging damage concrete structures.
American Psychological Association (APA)
Zhu, Wen-Fa& Shao, Wei& Peng, Le-Le& Fan, Guo-Peng& Chen, Xing-Jie& Zheng, Shu-Bin…[et al.]. 2019. Time-Domain Topological Energy Imaging Method of Concrete Cavity Defect by Lamb Wave. Shock and Vibration،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1211404
Modern Language Association (MLA)
Zhu, Wen-Fa…[et al.]. Time-Domain Topological Energy Imaging Method of Concrete Cavity Defect by Lamb Wave. Shock and Vibration No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1211404
American Medical Association (AMA)
Zhu, Wen-Fa& Shao, Wei& Peng, Le-Le& Fan, Guo-Peng& Chen, Xing-Jie& Zheng, Shu-Bin…[et al.]. Time-Domain Topological Energy Imaging Method of Concrete Cavity Defect by Lamb Wave. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1211404
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211404