D4 Published development or research report or study

Fatigue strength assessment of ground fillet-welded steel joints using 4R method (IIW-Doc. XIII-2862-2020)

Publication Details
Authors: Ahola Antti, Muikku Arttu, Braun Moritz, Björk Timo
Publication year: 2020
Language: English
Title of parent publication: International Institute of Welding
JUFO-Level of this publication: 0
Open Access: Not an Open Access publication


In the present study, a literature study on the fatigue test data and, subsequently, fatigue analysis is carried out for welded joins made of various steel grades, and post-weld treated with grinding and combined grinding and peening methods. For the extracted data sets, with a total number of 583 fatigue test data points, notch stress concentrations were numerically obtained, and the data points were re-analyzed using the 4R method considering the material strength, residual stress, applied stress ratio and weld toe radius. The use of the 4R method, instead of the local fatigue strength assessment approaches, enables consideration of residual stresses, and the 4R method predicted accurately the fatigue strength of joints in as-welded and post-weld-treated condition, including grinding and combined grinding and peening methods.

Last updated on 2020-11-11 at 09:58