Detection of deposits adhered on the back surface of plate-like structures using a scanning laser source technique

Tanaka, Shoma; Hayashi, Takahiro; Mori, Naoki

International Journal of Pressure Vessels and Piping, 2024, 212, 105303

Number of Access:341（2025-08-14 02:54 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/98334

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Title
Detection of deposits adhered on the back surface of plate-like structures using a scanning laser source technique
Creator
CreatorName
Tanaka, Shoma
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
NRID
1000000802092 1000000802092
ORCID
0000-0002-0707-3443 0000-0002-0707-3443
researchmap permalink
7000020478 7000020478
Scopus Author ID
55614094500 55614094500
CreatorName
Mori, Naoki
Description
Tanaka S., Hayashi T., Mori N. Detection of deposits adhered on the back surface of plate-like structures using a scanning laser source technique. International Journal of Pressure Vessels and Piping 212, 105303 (2024); https://doi.org/10.1016/j.ijpvp.2024.105303.
Abstract
An imaging technique using a scanning laser source (SLS) was applied to detect deposits inside pipes, which are necessary for the safe decommissioning of the Fukushima Nuclear Power Plant. Experimental results showed that the more firmly adhered the deposit on the back surface of a flat plate, the clearer it is to obtain an image of the deposit. This result is as expected because the imaging by an SLS technique is dependent on the bending stiffness of the thin plate structure. Furthermore, even epoxy putty as large as 50 mm in diameter adhered to the inner surface of the pipe could be imaged, and even when the receiver device was changed from a piezoelectric device to a non-contact laser doppler vibrometer, the image of the deposit could be obtained properly with some degradation of the image due to the effect of a lower signal-to-noise ratio.
Publisher
Elsevier Ltd
Source Title
International Journal of Pressure Vessels and Piping
Volume (Issue)
212
Page
105303
Date of Issued
2024-12-01
Language
English
Handle URL
https://hdl.handle.net/11094/98334
PISSN
03080161
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.ijpvp.2024.105303
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article