Analysis of flexural mode focusing by a semianalytical finite element method

Hayashi, Takahiro; Kawashima, Koichiro; Sun, Zongqi; Rose, Joseph L.

doi:https://doi.org/10.1121/1.1543931

Analysis of flexural mode focusing by a semianalytical finite element method

Hayashi, Takahiro; Kawashima, Koichiro; Sun, Zongqi et al.

The Journal of the Acoustical Society of America, 2003, 113(3), 1241-1248

アクセス数:291件（2025-08-14 17:07 集計）

固定URL: https://hdl.handle.net/11094/84502

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タイトル	Analysis of flexural mode focusing by a semianalytical finite element method
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
	NRID 1000050023239 1000050023239 著者名 Kawashima, Koichiro
	著者名 Sun, Zongqi
	著者名 Rose, Joseph L.
内容	Takahiro Hayashi, Koichiro Kawashima, Zongqi Sun and Joseph L. Rose. Analysis of flexural mode focusing by a semianalytical finite element method. Journal of the Acoustical Society of America, 2003, 113(3), 1241. https://doi.org/10.1121/1.1543931.
抄録	Focusing is one of the most promising techniques for the detection of small defects in pipe works, in which guided waves including longitudinal and flexural modes are tuned so that ultrasonic energy can be focused at a target point in a pipe, and analysis of reflected waves gives information on defects such as location and size. In this paper, the focusing technique is discussed by way of a simulation of guided wave propagation in pipe by a semianalytical finite element method (SAFE). Experiments and SAFE calculations were. compared for waveforms transmitted by a single transducer and received at different circumferential positions initially, and then the focusing phenomena were experimentally observed using focusing parameters obtained by calculations. Calculation and visualization were conducted to clarify focusing phenomena in pipe in investigating the potential of'the focusing technique. These results show that the time-reversal idea helps in understanding focusing and that resolution of focusing is strongly affected by incident waveforms as well as the number of channels available in an experiment.
出版者	Acoustical Society of America
収録物名	The Journal of the Acoustical Society of America
巻(号)	113(3)
ページ	1241-1248
刊行年月	2003-03
言語	英語
ハンドルURL	https://hdl.handle.net/11094/84502
PISSN	00014966
NCID	AA00253792
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1121/1.1543931
関連情報 (isIdenticalTo)	PMID 12656359
アクセス権	open access
権利情報	Copyright 2003 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.
出版タイプ	Version of Record
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	The Journal of the Acoustical Society of America. 2003, 113(3), p. 1241-1248
DC.title	Analysis of flexural mode focusing by a semianalytical finite element method
DC.creator	Hayashi, Takahiro
	Kawashima, Koichiro
	Sun, Zongqi
	Rose, Joseph L.
DC.publisher	Acoustical Society of America
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2003-03
DC.identifier	https://doi.org/10.1121/1.1543931
DC.description	Takahiro Hayashi, Koichiro Kawashima, Zongqi Sun and Joseph L. Rose. Analysis of flexural mode focusing by a semianalytical finite element method. Journal of the Acoustical Society of America, 2003, 113(3), 1241. https://doi.org/10.1121/1.1543931.
DCTERMS.abstract	Focusing is one of the most promising techniques for the detection of small defects in pipe works, in which guided waves including longitudinal and flexural modes are tuned so that ultrasonic energy can be focused at a target point in a pipe, and analysis of reflected waves gives information on defects such as location and size. In this paper, the focusing technique is discussed by way of a simulation of guided wave propagation in pipe by a semianalytical finite element method (SAFE). Experiments and SAFE calculations were. compared for waveforms transmitted by a single transducer and received at different circumferential positions initially, and then the focusing phenomena were experimentally observed using focusing parameters obtained by calculations. Calculation and visualization were conducted to clarify focusing phenomena in pipe in investigating the potential of'the focusing technique. These results show that the time-reversal idea helps in understanding focusing and that resolution of focusing is strongly affected by incident waveforms as well as the number of channels available in an experiment.
DC.rights	Copyright 2003 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.
DC.format	84502
citation_title	Analysis of flexural mode focusing by a semianalytical finite element method
citation_author	Hayashi, Takahiro
	Kawashima, Koichiro
	Sun, Zongqi
	Rose, Joseph L.
citation_publisher	Acoustical Society of America
citation_language	英語
citation_date	2003-03
citation_journal_title	The Journal of the Acoustical Society of America
citation_volume	113
citation_issue	3
citation_firstpage	1241
citation_lastpage	1248
citation_doi	https://doi.org/10.1121/1.1543931
citation_pmid	12656359
citation_public_url	https://hdl.handle.net/11094/84502

Analysis of flexural mode focusing by a semianalytical finite element method

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