EMAT pipe inspection technique using higher mode torsional guided wave T(0,2)

Nurmalia; Nakamura, N.; Ogi, H. et al.

NDT & E International, 2017, 87, 78-84

Number of Access:578（2025-10-09 11:46 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84479

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Title
EMAT pipe inspection technique using higher mode torsional guided wave T(0,2)
Creator
CreatorName
Nurmalia
NRID
1000050452404 1000050452404
researchmap permalink
nnakamura nnakamura
Scopus Author ID
7403356186 7403356186
ORCID
0000-0002-5338-842X 0000-0002-5338-842X
CreatorName
Nakamura, N.
NRID
1000090252626 1000090252626
researchmap permalink
read0042771 read0042771
Scopus Author ID
35563683500 35563683500
CreatorName
Ogi, H.
NRID
1000080112027 1000080112027
CreatorName
Hirao, M.
Subject
EMAT
Torsional guided wave
Pipe inspection
Phase
Mode conversion
Abstract
We developed a pitch-catch system based on electromagnetic acoustic transducers (EMATs) for pipe inspection, which moves inside the pipe in the axial direction. The first higher mode, T(0,2), of the torsional guided wave is transmitted and detected, and variations of amplitude and phase are measured while moving the EMATs. Several aluminum pipes containing dish-shaped defects are inspected, and the amplitude and phase show enough detection sensitivity. It is found that the phase measurement has better potential as a tool for quantitative inspection. The applicability of the technique for steel pipe is also confirmed.
Publisher
Elsevier Ltd
Source Title
NDT & E International
Volume (Issue)
87
Page
78-84
Date of Issued
2017-04
Language
English
Handle URL
https://hdl.handle.net/11094/84479
PISSN
09638695
NCID
AA10816574
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/j.ndteint.2017.01.009
Access Rights
open access
CopyRight
© 2017 Elsevier Ltd. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article