• English
  • Deutsch
  • Log In
    Password Login
    Research Outputs
    Fundings & Projects
    Researchers
    Institutes
    Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Artikel
  4. Approach for the probabilistic fatigue assessment of welded joints based on the local geometry of the weld seam
 
  • Details
  • Full
Options
2024
Journal Article
Title

Approach for the probabilistic fatigue assessment of welded joints based on the local geometry of the weld seam

Abstract
Welded joints show large variation of the weld toe geometry along the weld seam, which is one important reason for the comparably large scatter in fatigue life. Therefore, it is crucial to take the local geometry at the weld toe into account, to reduce the conservatism in fatigue assessment of welded joints. This study is based on the IBESS procedure for the calculation of the fatigue strength, whereby the evaluation of local geometrical parameters is carried out by means of 3D surface scans. The approach is validated against 26 fatigue test series. The fatigue life is in general overpredicted, whereas good agreement is achieved for high stress ratio (Formula presented). A sensitivity analysis conducted with IBESS shows that weld toe radii ρ < 2 mm and flank angle α < 30° have a significant influence on the calculated fatigue strength. In contrast to this, no strong correlation between and the fatigue strength was determined experimentally in this study.
Author(s)
Schubnell, Jan
Fraunhofer-Institut für Werkstoffmechanik IWM  
Konidena, Sai Kumar
Fraunhofer-Institut für Werkstoffmechanik IWM  
Jung, Matthias  
Fraunhofer-Institut für Werkstoffmechanik IWM  
Braun, Moritz
DLR Institute of Maritime Energy Systems
Ehlers, Sören
DLR Institute of Maritime Energy Systems
Madia, Mauro
Bundesanstalt für Materialforschung und -prüfung -BAM-, Berlin  
Kannengießer, Thomas
Bundesanstalt für Materialforschung und -prüfung -BAM-, Berlin  
Löschner, Daniel
University of Applied Sciences Munich
Journal
Fatigue and Fracture of Engineering Materials and Structures  
Open Access
DOI
10.1111/ffe.14170
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
Keyword(s)
  • 3D scanning

  • fatigue strength

  • fracture mechanic

  • IBESS approach

  • local weld geometry

  • welded joints

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Contact
© 2024