Development of shear-vertical-wave point-focusing electromagnetic acoustic transducer

Takishita, Takashi; Ashida, Kazuhiro; Nakamura, Nobutomo et al.

Japanese Journal of Applied Physics, 2015, 54, 07HC04

Number of Access:321（2025-11-25 02:18 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84485

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Title
Development of shear-vertical-wave point-focusing electromagnetic acoustic transducer
Creator
CreatorName
Takishita, Takashi
CreatorName
Ashida, Kazuhiro
NRID
1000050452404 1000050452404
researchmap permalink
nnakamura nnakamura
Scopus Author ID
7403356186 7403356186
ORCID
0000-0002-5338-842X 0000-0002-5338-842X
CreatorName
Nakamura, Nobutomo
NRID
1000090252626 1000090252626
researchmap permalink
read0042771 read0042771
Scopus Author ID
35563683500 35563683500
ORCID
0000-0002-9602-5194 0000-0002-9602-5194
CreatorName
Ogi, Hirotsugu
NRID
1000080112027 1000080112027
CreatorName
Hirao, Masahiko
Description
Takashi Takishita, Kazuhiro Ashida, Nobutomo Nakamura, Hirotsugu Ogi and Masahiko Hirao. Development of shear-vertical-wave point-focusing electromagnetic acoustic transducer. Japanese Journal of Applied Physics, 2015, 54,(7S1), 07HC04. https://doi.org/10.7567/JJAP.54.07HC04.
Abstract
A shear-vertical-wave point-focusing electromagnetic acoustic transducer is developed for the purpose of detecting stress corrosion cracking in stainless steel. The transducer is composed of a permanent magnet and two identical concentric meander-line coils, one for the transmitter and the other for the receiver, and the shear-vertical waves are excited and detected by the Lorentz force mechanism. The meander-line coils are designed so that the phases of all the excited shear-vertical waves are focused in phase at a focal point. The focal area is evaluated experimentally, and it is confirmed that the developed transducer is capable of detecting slit defects deeper than 0.05mm at the bottom surface of a stainless-steel plate 20mm thick.
Publisher
The Japan Society of Applied Physics
Source Title
Japanese Journal of Applied Physics
Volume (Issue)
54
Page
07HC04
Date of Issued
2015-06-05
Language
English
Handle URL
https://hdl.handle.net/11094/84485
PISSN
00214922
eISSN
13474065
NCID
AA12295836
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.7567/JJAP.54.07HC04
Access Rights
open access
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article