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Effect of Welding Parameter on Fatigue Properties of Dissimilar Welds and Fatigue Life Evaluation Based on Singular Stress
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  • Yuki Ogawa,
  • Fumiya Nakahara,
  • Hiroyuki Akebono,
  • Kojiro Tanaka,
  • Atsushi Sugeta
Yuki Ogawa
National Institute for Materials Science
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Fumiya Nakahara
Hiroshima Daigaku - Higashihiroshima Campus
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Hiroyuki Akebono
Hiroshima Daigaku - Higashihiroshima Campus
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Kojiro Tanaka
Mazda Motor Corporation
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Atsushi Sugeta
Hiroshima Daigaku - Higashihiroshima Campus
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Abstract

Manufacturers have been promoting multi-material designs. So, the dissimilar material welding methods are being developed. We focused on heat welding technologies for friction stir spot welding of aluminum alloy and carbon fiber-reinforced plastic. This study investigated the effect of changes to jig constraint of joined members on the fatigue properties of joints. Also the fatigue life estimation was carried out by considering the singular stress at the welding joint interface. As a result, the fatigue strength of joint in a less constrained state is higher than that in a more constrained state. The singular stress intensity at the slit tip was uniformly predicted by the differences in welding parameters of joints.

Peer review status:ACCEPTED

12 Mar 2020Submitted to Fatigue & Fracture of Engineering Materials & Structures
13 Mar 2020Submission Checks Completed
13 Mar 2020Assigned to Editor
14 Mar 2020Reviewer(s) Assigned
26 Mar 2020Review(s) Completed, Editorial Evaluation Pending
29 Mar 2020Editorial Decision: Revise Major
13 Apr 20201st Revision Received
13 Apr 2020Submission Checks Completed
13 Apr 2020Assigned to Editor
14 Apr 2020Reviewer(s) Assigned
21 Apr 2020Review(s) Completed, Editorial Evaluation Pending
25 Apr 2020Editorial Decision: Accept