Defect imaging with guided waves in a pipe

Hayashi, Takahiro; Murase, Morimasa

The Journal of the Acoustical Society of America, 2005, 117(4), 2134-2140

アクセス数:459件（2025-08-14 16:51 集計）

固定URL: https://hdl.handle.net/11094/84488

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論文情報

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タイトル
Defect imaging with guided waves in a pipe
著者
NRID
1000030324479 1000030324479
ORCID
0000-0001-6064-4658 0000-0001-6064-4658
researchmap permalink
takahiro_hayashi takahiro_hayashi
Scopus Author ID
37064150200 37064150200
著者名
Hayashi, Takahiro
著者名
Murase, Morimasa
内容
Takahiro Hayashi and Morimasa Murase. Defect imaging with guided waves in a pipe. Journal of the Acoustical Society of America, 2005, 117(4), 2134. https://doi.org/10.1121/1.1862572.
抄録
Guided wave techniques are expected to become an effective means for rapid, long-range inspection of pipes. Such techniques still have many practical difficulties in application, however, due to the complex characteristics of guided waves such as dispersion and their multimodal nature. A defect imaging technique is developed in this study to overcome the complexities of guided wave inspection. Received signals are separated into single-mode waveforms with a mode extraction technique and then spatial waveforms on the pipe surface at an arbitrary time are reconstructed. The predicted waveforms can provide a defect image at the moment when an incident wave arrives at a defect region, which is based on a time-reversal technique. This defect imaging technique is experimentally verified using eight signals detected at eight different circumferential positions. Images of artificial defects are obtained with one-hole and two-hole test pipes, and increasing the frequency of incident waves increases the resolution of the images. Holes and pipe ends are recognizable in the images, but the reconstructed images contain some errors in the area behind the defects where guided waves do not propagate or do not reflect back to the receiving transducers. © 2005 Acoustical Society of America.
出版者
Acoustical Society of America
収録物名
The Journal of the Acoustical Society of America
巻(号)
117(4)
ページ
2134-2140
刊行年月
2005-04-08
言語
英語
ハンドルURL
https://hdl.handle.net/11094/84488
PISSN
00014966
NCID
AA00253792
関連情報 (isIdenticalTo)
DOI (出版社版)
https://doi.org/10.1121/1.1862572
アクセス権
open access
権利情報
Copyright 2005 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.
出版タイプ
Version of Record
カテゴリ
学術雑誌論文 Journal Article