Refined fatigue assessment of joints with welded in-plane attachments by LEFM
Journal article, 2013

The fatigue life of joints with welded in-plane gusset plates is studied. The purpose is to suggest a descriptive detail category to be used in assessment of existing structures. Linear elastic fracture mechanics is used together with fictitious initial crack depths to predict the fatigue life. By calibrating the fictitious crack depths to real fatigue tests and simulating new test results, fatigue strengths dependent on the dimensions of the joint have been derived. The results show that a decreasing length and thickness of the gusset give decreasing stress intensity and higher fatigue strength. A numerical example is presented showing the merit of the proposed strengths in fatigue life. (C) 2013 Elsevier Ltd. All rights reserved.

Fatigue Gusset plates

Stress intensity factor

Detail category



John Leander

Royal Institute of Technology (KTH)

Mustafa Aygül

Chalmers, Civil and Environmental Engineering, Structural Engineering

Bert Norlin

Royal Institute of Technology (KTH)

International Journal of Fatigue

0142-1123 (ISSN)

Vol. 56 25-32

Subject Categories

Materials Engineering



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