Electromagnetic ultrasonic tomography of plate defects based on omnidirectional Lamb-wave EMATs

Lei Kang; Chao Zhang; Ping Chen; Jianguo Li; Yixuan Zhang

doi:10.1109/FENDT.2015.7398313

Electromagnetic ultrasonic tomography of plate defects based on omnidirectional Lamb-wave EMATs

Lei Kang, Chao Zhang, Ping Chen, Jianguo Li, Yixuan Zhang

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper presents the design method of omnidirectional Lamb-wave electromagnetic acoustic transducers (EMATs) for electromagnetic ultrasonic Lamb wave tomography technique. The 360 degrees radiated A0 mode Lamb wave is excited through the selection of the appropriate working point, which not only can realize large range detection of plate structure, but also be more convenient to extract feature of the echo. The travel time between the transmitting and receiving EMATs is measured through using crosshole scanning method. Then slowness image reconstruction is realized by using SIRT (Simultaneous Iterative Reconstruction Technique). The experimental result of imaging of a 1.5 mm deep artificial defect with a diameter of 26 mm in 2mm thick aluminum plate is obtained, according to which the defect can be found.

Original language	English
Title of host publication	Proceedings of 2015 IEEE Far East NDT New Technology and Application Forum, FENDT 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	71-75
Number of pages	5
ISBN (Electronic)	9781467370011
ISBN (Print)	9781467370004
DOIs	https://doi.org/10.1109/FENDT.2015.7398313
Publication status	Published - 3 Feb 2016
Event	IEEE Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, FENDT 2015 - Zhuhai, China Duration: 28 May 2015 → 31 May 2015

Conference

Conference	IEEE Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, FENDT 2015
Country/Territory	China
City	Zhuhai
Period	28/05/15 → 31/05/15

Keywords

Electromagnet acoustic transducers
extraction of travel time
omnidirectional Lamb wave
tomography

Access to Document

10.1109/FENDT.2015.7398313

Cite this

Kang, L., Zhang, C., Chen, P., Li, J., & Zhang, Y. (2016). Electromagnetic ultrasonic tomography of plate defects based on omnidirectional Lamb-wave EMATs. In Proceedings of 2015 IEEE Far East NDT New Technology and Application Forum, FENDT 2015 (pp. 71-75). Article 7398313 Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/FENDT.2015.7398313

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title = "Electromagnetic ultrasonic tomography of plate defects based on omnidirectional Lamb-wave EMATs",

abstract = "This paper presents the design method of omnidirectional Lamb-wave electromagnetic acoustic transducers (EMATs) for electromagnetic ultrasonic Lamb wave tomography technique. The 360 degrees radiated A0 mode Lamb wave is excited through the selection of the appropriate working point, which not only can realize large range detection of plate structure, but also be more convenient to extract feature of the echo. The travel time between the transmitting and receiving EMATs is measured through using crosshole scanning method. Then slowness image reconstruction is realized by using SIRT (Simultaneous Iterative Reconstruction Technique). The experimental result of imaging of a 1.5 mm deep artificial defect with a diameter of 26 mm in 2mm thick aluminum plate is obtained, according to which the defect can be found.",

keywords = "Electromagnet acoustic transducers, extraction of travel time, omnidirectional Lamb wave, tomography",

author = "Lei Kang and Chao Zhang and Ping Chen and Jianguo Li and Yixuan Zhang",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; IEEE Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, FENDT 2015 ; Conference date: 28-05-2015 Through 31-05-2015",

year = "2016",

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doi = "10.1109/FENDT.2015.7398313",

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Kang, L, Zhang, C, Chen, P, Li, J & Zhang, Y 2016, Electromagnetic ultrasonic tomography of plate defects based on omnidirectional Lamb-wave EMATs. in Proceedings of 2015 IEEE Far East NDT New Technology and Application Forum, FENDT 2015., 7398313, Institute of Electrical and Electronics Engineers Inc., pp. 71-75, IEEE Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, FENDT 2015, Zhuhai, China, 28/05/15. https://doi.org/10.1109/FENDT.2015.7398313

Electromagnetic ultrasonic tomography of plate defects based on omnidirectional Lamb-wave EMATs. / Kang, Lei; Zhang, Chao; Chen, Ping et al.
Proceedings of 2015 IEEE Far East NDT New Technology and Application Forum, FENDT 2015. Institute of Electrical and Electronics Engineers Inc., 2016. p. 71-75 7398313.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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