@inproceedings{9a2a245c7b124cfbbee47186c084b03e,
title = "Unidirectional line-focusing shear vertical wave EMATs used for rail base center flaw detection",
abstract = "Electromagnetic acoustic transducer (EMAT) is used for rail base flaw detection. The bidirectional radiation pattern of Shear Vertical wave (SV-wave) EMAT limits the accuracy and efficiency of the transducers. In view of this problem, a method of generating unidirectional focusing SV wave is brought up by a unidirectional line-focusing SV-wave EMAT. A 2D finite element model is built to demonstrate the feasibility of rail base flaw detection. Finally, the unidirectional line-focusing SV-wave EMAT is compared experimentally with other three kinds of SV-wave EMATs. The results show that using the unidirectional SV-wave EMAT can enhance the amplitude of echo signal into around two times of the bidirectional EMAT. Compared with bidirectional SV-wave EMAT and unidirectional SV-wave EMAT, the amplitude of echo signals are increased by 7\% and by 10\% by line-focusing SV-wave EMAT and unidirectional line-focusing SV wave EMAT, respectively.",
keywords = "EMATs, Rail base center, SV Wave, Unidirectional focusing",
author = "Li, \{Yong Qian\} and Ce Li and Su, \{Ri Liang\} and Zhai, \{Guo Fu\} and Wang, \{Kai Can\}",
note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 2016 IEEE Far East NDT New Technology and Application Forum, FENDT 2016 ; Conference date: 22-06-2016 Through 24-06-2016",
year = "2017",
month = jul,
day = "25",
doi = "10.1109/FENDT.2016.7992004",
language = "英语",
series = "Proceedings of 2016 IEEE Far East NDT New Technology and Application Forum, FENDT 2016",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "99--102",
editor = "Chunguang Xu",
booktitle = "Proceedings of 2016 IEEE Far East NDT New Technology and Application Forum, FENDT 2016",
address = "美国",
}