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

Number of Access:458（2025-08-14 03:23 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84488

Link to primary information 

File Format Terms of use Size Views Date.Available Description information
JAcoustSocAm_117_4_I_2134 pdf None 987 KB 293 2021.10.06  

Item Information

Output File Export EndNote Basic Export Mendeley

Title
Defect imaging with guided waves in a pipe
Creator
NRID
1000030324479 1000030324479
ORCID
0000-0001-6064-4658 0000-0001-6064-4658
researchmap permalink
takahiro_hayashi takahiro_hayashi
Scopus Author ID
37064150200 37064150200
CreatorName
Hayashi, Takahiro
CreatorName
Murase, Morimasa
Description
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.
Abstract
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.
Publisher
Acoustical Society of America
Source Title
The Journal of the Acoustical Society of America
Volume (Issue)
117(4)
Page
2134-2140
Date of Issued
2005-04-08
Language
English
Handle URL
https://hdl.handle.net/11094/84488
PISSN
00014966
NCID
AA00253792
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1121/1.1862572
Access Rights
open access
CopyRight
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.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article