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論文情報
タイトル
Application of Self-Reference Lock-in Thermography to the Measurement of Fatigue Damage Parameter
著者
Sakino, Yoshihiro
Sakino, Yoshihiro
Sakagami, Takahide
Sakagami, Takahide
Kim, You-Chu
Kim, You-Chu
キーワード等
Fatigue
Thermography
Sacrificial test piece
Bridge maintenance
Crack growth
抄録
A sacrificial test piece is used as a specimen attached to the member of a main structure to evaluate the damage before the appearance of a crack in a member of a bridge. If the crack length of the sacrificial test piece can be measured from a long distance, the damage in a member of the bridge can be evaluated more easily and cheaply. In this paper, thin steel plates, which have initial cracks at the center, are used as sacrificial test pieces and a measuring method by self-reference lock-in thermography is proposed. Fatigue tests of the sacrificial test pieces were performed and crack lengths were measured by the proposed method from a long distance. As the result, it is ascertained that the crack length of the sacrificial test piece can be measured from a long distance by the proposed method in the case that the stress range is 30MPa or more, even if the frequency is as small as 3Hz.
公開者
大阪大学接合科学研究所
公開者の別表記
Joining and Welding Research Institute, Osaka University
公開者 (ヨミ)
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
掲載誌名
Transactions of JWRI
巻
37
号
2
開始ページ
81
終了ページ
86
刊行年月
2008-12
ISSN
03874508
NCID
AA00867058
URL
http://hdl.handle.net/11094/10914
言語
英語
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.37 No.2 (2008-12)
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著者版フラグ
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text
DCTERMS.bibliographicCitation
Transactions of JWRI.37(2) P.81-P.86
DC.title
Application of Self-Reference Lock-in Thermography to the Measurement of Fatigue Damage Parameter
DC.creator
Sakino, Yoshihiro
Sakagami, Takahide
Kim, You-Chu
DC.publisher
大阪大学接合科学研究所
DC.language" scheme="DCTERMS.RFC1766
英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF
2008-12
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/10914
DC.subject
Fatigue
Thermography
Sacrificial test piece
Bridge maintenance
Crack growth
DCTERMS.abstract
A sacrificial test piece is used as a specimen attached to the member of a main structure to evaluate the damage before the appearance of a crack in a member of a bridge. If the crack length of the sacrificial test piece can be measured from a long distance, the damage in a member of the bridge can be evaluated more easily and cheaply. In this paper, thin steel plates, which have initial cracks at the center, are used as sacrificial test pieces and a measuring method by self-reference lock-in thermography is proposed. Fatigue tests of the sacrificial test pieces were performed and crack lengths were measured by the proposed method from a long distance. As the result, it is ascertained that the crack length of the sacrificial test piece can be measured from a long distance by the proposed method in the case that the stress range is 30MPa or more, even if the frequency is as small as 3Hz.
citation_title
Application of Self-Reference Lock-in Thermography to the Measurement of Fatigue Damage Parameter
citation_author
Sakino, Yoshihiro
Sakagami, Takahide
Kim, You-Chu
citation_publisher
大阪大学接合科学研究所
citation_language
英語
citation_date
2008-12
citation_journal_title
Transactions of JWRI
citation_volume
37
citation_issue
2
citation_firstpage
81
citation_lastpage
86
citation_issn
03874508
citation_public_url
http://hdl.handle.net/11094/10914
citation_keywords
Fatigue
Thermography
Sacrificial test piece
Bridge maintenance
Crack growth