Single mode extraction from multiple modes of lamb wave and its application to defect detection

Hayashi, Takahiro; Kawashima, Koichiro

doi:https://doi.org/10.1299/jsmea.46.620

Single mode extraction from multiple modes of lamb wave and its application to defect detection

Hayashi, Takahiro; Kawashima, Koichiro

JSME International Journal, Series A: Solid Mechanics and Material Engineering, 2003, 46(4), 620-626

Number of Access:318（2025-08-16 00:38 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84504

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Title	Single mode extraction from multiple modes of lamb wave and its application to defect detection
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
Creator	NRID 1000050023239 1000050023239 CreatorName Kawashima, Koichiro
Subject	Air-coupled ultrasonic
	Fast fourier transform
	Lamb wave
	Nondestructive inspection
	Signal filtering
	Ultrasonic inspection
Description	Takahiro HAYASHI, Koichiro KAWASHIMA. Single mode extraction from multiple modes of lamb wave and its application to defect detection. JSME International Journal, Series A: Solid Mechanics and Material Engineering, 2003, 46(4), 620. https://doi.org/10.1299/jsmea.46.620.
Abstract	Lamb waves generally consist of many dispersive modes, which makes mode identification difficult. This study describes the extraction of a single mode from multiple modes. The single mode extraction is based on two-dimensional Fast Fourier Transform (2D FFT) in time and space, signal filtering, and 2D inverse FFT. An air-coupled ultrasonic technique was adopted for non-contact fast measurements. Using this technique, the A0 and S0 mode were clearly detected in preliminary tests of intact plates. Furthermore, multiple reflections of the A0 mode, which were shown only in the computer simulation, were experimentally confirmed in reflection tests of plates with a rectangular notch. In the reflection tests, two reflected waves were extracted in the intervals corresponding to notch widths.
Publisher	The Japan Society of Mechanical Engineers
Source Title	JSME International Journal, Series A: Solid Mechanics and Material Engineering
Volume (Issue)	46(4)
Page	620-626
Date of Issued	2003
Language	English
Handle URL	https://hdl.handle.net/11094/84504
PISSN	13447912
NCID	AA11179396
Relation.isVersionOf	DOI (Publisher Version) https://doi.org/10.1299/jsmea.46.620
Access Rights	open access
CopyRight	© 2003 by The Japan Society of Mechanical Engineers.
oaire:version	Accepted Manuscript
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	JSME International Journal, Series A: Solid Mechanics and Material Engineering. 2003, 46(4), p. 620-626
DC.title	Single mode extraction from multiple modes of lamb wave and its application to defect detection
DC.creator	Hayashi, Takahiro
DC.creator	Kawashima, Koichiro
DC.publisher	The Japan Society of Mechanical Engineers
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2003
DC.identifier	https://doi.org/10.1299/jsmea.46.620
DC.subject	Air-coupled ultrasonic
	Fast fourier transform
	Lamb wave
	Nondestructive inspection
	Signal filtering
	Ultrasonic inspection
DC.description	Takahiro HAYASHI, Koichiro KAWASHIMA. Single mode extraction from multiple modes of lamb wave and its application to defect detection. JSME International Journal, Series A: Solid Mechanics and Material Engineering, 2003, 46(4), 620. https://doi.org/10.1299/jsmea.46.620.
DCTERMS.abstract	Lamb waves generally consist of many dispersive modes, which makes mode identification difficult. This study describes the extraction of a single mode from multiple modes. The single mode extraction is based on two-dimensional Fast Fourier Transform (2D FFT) in time and space, signal filtering, and 2D inverse FFT. An air-coupled ultrasonic technique was adopted for non-contact fast measurements. Using this technique, the A0 and S0 mode were clearly detected in preliminary tests of intact plates. Furthermore, multiple reflections of the A0 mode, which were shown only in the computer simulation, were experimentally confirmed in reflection tests of plates with a rectangular notch. In the reflection tests, two reflected waves were extracted in the intervals corresponding to notch widths.
DC.rights	© 2003 by The Japan Society of Mechanical Engineers.
DC.format	84504
citation_title	Single mode extraction from multiple modes of lamb wave and its application to defect detection
citation_author	Hayashi, Takahiro
citation_author	Kawashima, Koichiro
citation_publisher	The Japan Society of Mechanical Engineers
citation_language	English
citation_date	2003
citation_journal_title	JSME International Journal, Series A: Solid Mechanics and Material Engineering
citation_volume	46
citation_issue	4
citation_firstpage	620
citation_lastpage	626
citation_doi	https://doi.org/10.1299/jsmea.46.620
citation_public_url	https://hdl.handle.net/11094/84504

Single mode extraction from multiple modes of lamb wave and its application to defect detection

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