Non-contact imaging for delamination using diffuse field concept

Nakao, Shogo; Hayashi, Takahiro

doi:https://doi.org/10.7567/1347-4065/ab0ada

Non-contact imaging for delamination using diffuse field concept

Nakao, Shogo; Hayashi, Takahiro

Japanese Journal of Applied Physics, 2019, 58, SGGB07

アクセス数:350件（2025-08-14 19:40 集計）

固定URL: https://hdl.handle.net/11094/84494

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タイトル	Non-contact imaging for delamination using diffuse field concept
著者	著者名 Nakao, Shogo
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
内容	This is the Accepted Manuscript version of an article accepted for publication in Japanese Journal of Applied Physics. IOP Publishing Ltd are not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.7567/1347-4065/ab0ada.
抄録	The non-contact measurement called scanning laser source (SLS) technique is applied to imaging inspection for subsurface delamination in a metal block and the effect of frequencies used for imaging is discussed with finite element method and experiments for an aluminum alloy block. First, FE formulation for the vibration of a closed structure described the relation between resonances in the whole structure and vibration distributions, and FE calculation provided the resonant frequencies and the resonant patterns of a metal block, which agreed well with experimental results. Next, images were obtained for a specimen with delamination using the SLS technique. When narrowband burst waves were used, the delamination images were largely different due to the resonances. For broadband chirp waves, the clear delamination images could be obtained in the frequency ranges including multiple resonant frequencies because diffuse fields were well established.
出版者	The Japan Society of Applied Physics
収録物名	Japanese Journal of Applied Physics
巻(号)	58
ページ	SGGB07
刊行年月	2019-06-10
言語	英語
ハンドルURL	https://hdl.handle.net/11094/84494
PISSN	00214922
eISSN	13474065
NCID	AA12295836
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.7567/1347-4065/ab0ada
アクセス権	open access
権利情報	© 2019 The Japan Society of Applied Physics. This Accepted Manuscript is available for reuse under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License after the 12 month embargo period provided that all the terms of the license are adhered to.
出版タイプ	Accepted Manuscript
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Japanese Journal of Applied Physics. 2019, 58, p. SGGB07
DC.title	Non-contact imaging for delamination using diffuse field concept
DC.creator	Nakao, Shogo
DC.creator	Hayashi, Takahiro
DC.publisher	The Japan Society of Applied Physics
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2019-06-10
DC.identifier	https://doi.org/10.7567/1347-4065/ab0ada
DC.description	This is the Accepted Manuscript version of an article accepted for publication in Japanese Journal of Applied Physics. IOP Publishing Ltd are not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.7567/1347-4065/ab0ada.
DCTERMS.abstract	The non-contact measurement called scanning laser source (SLS) technique is applied to imaging inspection for subsurface delamination in a metal block and the effect of frequencies used for imaging is discussed with finite element method and experiments for an aluminum alloy block. First, FE formulation for the vibration of a closed structure described the relation between resonances in the whole structure and vibration distributions, and FE calculation provided the resonant frequencies and the resonant patterns of a metal block, which agreed well with experimental results. Next, images were obtained for a specimen with delamination using the SLS technique. When narrowband burst waves were used, the delamination images were largely different due to the resonances. For broadband chirp waves, the clear delamination images could be obtained in the frequency ranges including multiple resonant frequencies because diffuse fields were well established.
DC.rights	© 2019 The Japan Society of Applied Physics. This Accepted Manuscript is available for reuse under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License after the 12 month embargo period provided that all the terms of the license are adhered to.
DC.format	84494
citation_title	Non-contact imaging for delamination using diffuse field concept
citation_author	Nakao, Shogo
citation_author	Hayashi, Takahiro
citation_publisher	The Japan Society of Applied Physics
citation_language	英語
citation_date	2019-06-10
citation_journal_title	Japanese Journal of Applied Physics
citation_volume	58
citation_firstpage	SGGB07
citation_doi	https://doi.org/10.7567/1347-4065/ab0ada
citation_public_url	https://hdl.handle.net/11094/84494

Non-contact imaging for delamination using diffuse field concept

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