Refined fatigue assessment of joints with welded in-plane attachments by LEFM
Artikel i vetenskaplig tidskrift, 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

Kungliga Tekniska Högskolan (KTH)

Mustafa Aygül

Chalmers, Bygg- och miljöteknik, Konstruktionsteknik

Bert Norlin

Kungliga Tekniska Högskolan (KTH)

International Journal of Fatigue

0142-1123 (ISSN)

Vol. 56 25-32





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