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jwri41_01-071
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論文情報
タイトル
Fatigue Life Enhancement of Fillet and Butt Welded Joints after Laser Peening
著者
Sakino, Yoshihiro
Sakino, Yoshihiro
Sano, Yuji
Sano, Yuji
Sumiya, Rie
Sumiya, Rie
Kim, You-Chul
Kim, You-Chul
キーワード等
Laser peening
Fatigue life
Residual stress
Fillet weld
Butt weld
Steen for structures
抄録
Laser peening which introduces compressive residual stresses on surfaces is effective in enhancing fatigue lives of welded components, because tensile residual stress due to welding is one of the most prominent factors reducing the fatigue lives. Structural steels are widely used for bridges, buildings, etc; however, the effects of laser peening on the structural steels are not well established, especially on the welded zones. In this study, the welded zones of a box-welded joint were treated by laser peening and the residual stress was examined. Moreover, fatigue lives were evaluated for box-welded joints and butt welded joints with and without laser peening. Results obtained are summarized as follows: (1) Laser peening resulted in a change in the residual stress from tensile to compressive around box welding zones of a fillet welded rib-plate. (2) Laser peening can dramatically extend the fatigue lives and increase the fatigue strength of fillet and butt welded joints.
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
41
号
1
開始ページ
71
終了ページ
76
刊行年月
2012-06
ISSN
03874508
NCID
AA00867058
URL
http://hdl.handle.net/11094/23163
言語
英語
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.41 No.1 (2012-06)
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text
DCTERMS.bibliographicCitation
Transactions of JWRI.41(1) P.71-P.76
DC.title
Fatigue Life Enhancement of Fillet and Butt Welded Joints after Laser Peening
DC.creator
Sakino, Yoshihiro
Sano, Yuji
Sumiya, Rie
Kim, You-Chul
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
2012-06
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/23163
DC.subject
Laser peening
Fatigue life
Residual stress
Fillet weld
Butt weld
Steen for structures
DCTERMS.abstract
Laser peening which introduces compressive residual stresses on surfaces is effective in enhancing fatigue lives of welded components, because tensile residual stress due to welding is one of the most prominent factors reducing the fatigue lives. Structural steels are widely used for bridges, buildings, etc; however, the effects of laser peening on the structural steels are not well established, especially on the welded zones. In this study, the welded zones of a box-welded joint were treated by laser peening and the residual stress was examined. Moreover, fatigue lives were evaluated for box-welded joints and butt welded joints with and without laser peening. Results obtained are summarized as follows: (1) Laser peening resulted in a change in the residual stress from tensile to compressive around box welding zones of a fillet welded rib-plate. (2) Laser peening can dramatically extend the fatigue lives and increase the fatigue strength of fillet and butt welded joints.
citation_title
Fatigue Life Enhancement of Fillet and Butt Welded Joints after Laser Peening
citation_author
Sakino, Yoshihiro
Sano, Yuji
Sumiya, Rie
Kim, You-Chul
citation_publisher
大阪大学接合科学研究所
citation_language
英語
citation_date
2012-06
citation_journal_title
Transactions of JWRI
citation_volume
41
citation_issue
1
citation_firstpage
71
citation_lastpage
76
citation_issn
03874508
citation_public_url
http://hdl.handle.net/11094/23163
citation_keywords
Laser peening
Fatigue life
Residual stress
Fillet weld
Butt weld
Steen for structures