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論文情報
タイトル
Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials
著者
Lin, Jian
Lin, Jian
Ma, Ninshu
Ma, Ninshu
Lei, Yongping
Lei, Yongping
Murakawa, Hidekazu
Murakawa, Hidekazu
キーワード等
Cold metal transfer
Steel/Al dissimilar materials joint
Shear strength
Failure mode
Numerical model
抄録
Cold metal transfer (CMT) is a promising method to join steel/Al dissimilar materials together in vehicle body assembly. In this paper, shear strength and failure mode of CMT brazed lap joint of steel/Al dissimilar materials are investigated in detail by both experimental and numerical simulating method. Two failure modes, including interface fracture and fusion line fracture are found out. Failure mode transition and the factors influencing joint strength and failure mode are discussed in detail. Finally, a numerical model to estimate shear strength and failure mode of CMT brazed lap joint of dissimilar materials, is developed based on the failure criteria of interface layer and fusion line fracture. It is shown that the numerical model including interface layer and fusion line failure criteria can be used to predict shear strength and failure mode of CMT brazed lap joint of dissimilar materials. Steel sheet thickness and strength grade can have an obvious effect on joint strength of interface layer fracture because of stress concentration status variation at interface layer element. And joint strength of fusion line fracture can be improved by reducing micro defects in weld metal.
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
WSE2011
開始ページ
105
終了ページ
111
刊行年月
2012-03
ISSN
03874508
NCID
AA00867058
URL
http://hdl.handle.net/11094/23070
言語
英語
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Special Issue on Welding science and Engineering (WSE2011)
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text
DCTERMS.bibliographicCitation
Transactions of JWRI.WSE2011 P.105-P.111
DC.title
Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials
DC.creator
Lin, Jian
Ma, Ninshu
Lei, Yongping
Murakawa, Hidekazu
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
2012-03
DC.identifier" scheme="DCTERMS.URI
http://hdl.handle.net/11094/23070
DC.subject
Cold metal transfer
Steel/Al dissimilar materials joint
Shear strength
Failure mode
Numerical model
DCTERMS.abstract
Cold metal transfer (CMT) is a promising method to join steel/Al dissimilar materials together in vehicle body assembly. In this paper, shear strength and failure mode of CMT brazed lap joint of steel/Al dissimilar materials are investigated in detail by both experimental and numerical simulating method. Two failure modes, including interface fracture and fusion line fracture are found out. Failure mode transition and the factors influencing joint strength and failure mode are discussed in detail. Finally, a numerical model to estimate shear strength and failure mode of CMT brazed lap joint of dissimilar materials, is developed based on the failure criteria of interface layer and fusion line fracture. It is shown that the numerical model including interface layer and fusion line failure criteria can be used to predict shear strength and failure mode of CMT brazed lap joint of dissimilar materials. Steel sheet thickness and strength grade can have an obvious effect on joint strength of interface layer fracture because of stress concentration status variation at interface layer element. And joint strength of fusion line fracture can be improved by reducing micro defects in weld metal.
citation_title
Studies on Two Failure Modes and Shear Strength of Various CMT Brazed Lap Joints of Dissimilar Materials
citation_author
Lin, Jian
Ma, Ninshu
Lei, Yongping
Murakawa, Hidekazu
citation_publisher
大阪大学接合科学研究所
citation_language
英語
citation_date
2012-03
citation_journal_title
Transactions of JWRI
citation_volume
WSE2011
citation_firstpage
105
citation_lastpage
111
citation_issn
03874508
citation_public_url
http://hdl.handle.net/11094/23070
citation_keywords
Cold metal transfer
Steel/Al dissimilar materials joint
Shear strength
Failure mode
Numerical model