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Fatigue reliability assessment of load-carrying cruciform welded joints with undercuts and misalignments
  • +5
  • Zheng Man,
  • Song Wei,
  • Fan Yu,
  • Jie Xu,
  • Xiaolei Xia,
  • He Min,
  • Zhou tao,
  • Filippo Berto
Zheng Man
China University of Mining and Technology
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Song Wei
Xuzhou University of Technology School of Mechanical and Electrical Engineering

Corresponding Author:swingways@hotmail.com

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Fan Yu
China University of Mining and Technology
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Jie Xu
China University of Mining and Technology
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Xiaolei Xia
Xuzhou University of Technology School of Mechanical and Electrical Engineering
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He Min
Xuzhou University of Technology School of Mechanical and Electrical Engineering
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Zhou tao
Xiamen University Fujian Provincial Key Laboratory of Ophthalmology and Visual Science
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Filippo Berto
Universita degli Studi di Roma La Sapienza Dipartimento di Ingegneria Meccanica e Aerospaziale
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Abstract

Due to the additional local stress concentration caused by undercut and misaligned defects, welded joints own less fatigue strength. This work uses probabilistic technique and fracture mechanics theory to quantitatively investigate the impacts of undercuts and misalignments on fatigue performance and reliability of Load-carrying Cruciform Welded Joint (LCWJ). Firstly, the geometrical characteristics summary of the size and type of undercuts and misalignments are provided from researches and experiments. Subsequently. Evaluations of the stress levels are combined with the nominal loadings in LCWJs, probabilistic distributions of material fracture properties, and various configurations of geometries and flaws. Meanwhile, the estimations of fatigue strengths are conducted by the probabilistic reliability theory by taking into account the distributions of the actual fatigue data. The findings reveal a clear disparity between the base metal and weldment test results. Different reliability levels for various defect types and sizes and in LCWJs are caused by the tolerance limits.
25 Apr 2023Submitted to Fatigue & Fracture of Engineering Materials & Structures
13 Jul 2023Submission Checks Completed
13 Jul 2023Assigned to Editor
15 Jul 2023Reviewer(s) Assigned
20 Aug 2023Review(s) Completed, Editorial Evaluation Pending
07 Sep 2023Editorial Decision: Revise Major
31 Oct 20231st Revision Received
31 Oct 2023Submission Checks Completed
31 Oct 2023Assigned to Editor
31 Oct 2023Reviewer(s) Assigned
04 Nov 2023Review(s) Completed, Editorial Evaluation Pending
12 Nov 2023Editorial Decision: Revise Minor
16 Nov 20232nd Revision Received
16 Nov 2023Submission Checks Completed
16 Nov 2023Assigned to Editor
16 Nov 2023Reviewer(s) Assigned
16 Nov 2023Review(s) Completed, Editorial Evaluation Pending
21 Nov 2023Editorial Decision: Accept