Generalized Formulation for Fatigue Assessment of Laser Stake-welded T-joints Varying Thicknesses and Loading Conditions

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


Research units

  • Kyoto University


The present work considers the evolution of the crack tip plasticity ahead of the crack-like notches with varying the loading condition and the thickness of laser stake-welded T-joints. A general procedure is described for the fatigue assessment of the joints under different loading conditions and made of different thicknesses. The new method is based on the analyses of the first order plastic radius (according to Irwin) for pure mode I, and it is generalized to mixed mode (I+II) by using the Minimum Plastic Zone Radius (MPZR) criterion. The method is validated, in the end, with a case study and explains why the fatigue slope m varies for joints loaded under bending/tension and when the thickness is reduced. The results prove that the procedure gives an excellent estimation of the fatigue life.


Original languageEnglish
Title of host publicationIIW 2018 - International Conference on Advanced Welding and Smart Fabrication Technologies
Publication statusPublished - 2019
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Advanced Welding and Smart Fabrication Technologies - Bali, Indonesia
Duration: 15 Jul 201820 Jul 2018

Publication series

NameMATEC web of conferences
PublisherEDP Sciences-Web of conferences
ISSN (Print)2274-7214
ISSN (Electronic)2261-236X


ConferenceInternational Conference on Advanced Welding and Smart Fabrication Technologies

    Research areas

  • welded joints, thin plates, Laser stake-welds

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