High-speed non-contact defect imaging for a plate-like structure

Hayashi, Takahiro

NDT and E International, 2017, 85, 53-62

Number of Access:334（2025-08-14 07:54 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84495

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Title
High-speed non-contact defect imaging for a plate-like structure
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
Subject
Elastic wave
Defect imaging
High speed
Scanning laser source
Non-contact
Abstract
Images of defects in a plate-like structure can be obtained from amplitude distributions measured using the scanning laser source technique. This paper discusses high-speed non-contact imaging for defects in a plate. Fundamental experiments conducted using a contact piezoelectric transducer as a receiving device revealed the effect of the generated wave shape and measurement speed on the defect images. Generating tone-burst waves consisting of multiple frequency components and averaging the images obtained in multiple frequency bands (frequency image averaging, FIA) gave clearer defect images in which noisy effects due to low signal-to-noise ratio and spurious images due to multiple reflections in high-speed imaging were reduced. Moreover, FIA was shown to be effective for high-speed non-contact imaging using a laser Doppler vibrometer.
Publisher
Elsevier Ltd
Source Title
NDT and E International
Volume (Issue)
85
Page
53-62
Date of Issued
2017-01
Language
English
Handle URL
https://hdl.handle.net/11094/84495
PISSN
09638695
NCID
AA10816574
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/j.ndteint.2016.10.009
Access Rights
open access
CopyRight
© 2016 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