A1 Journal article (refereed), original research

Fatigue strength of longitudinal load-carrying welds in beams made of ultra-high-strength steel


Open Access hybrid publication

Publication Details
Authors: Skriko Tuomas, Lipiäinen Kalle, Ahola Antti, Mettänen Heli, Björk Timo
Publisher: Elsevier
Publication year: 2021
Language: English
Related Journal or Series Information: Journal of Constructional Steel Research
Volume number: 179
ISSN: 0143-974X
eISSN: 1873-5983
JUFO-Level of this publication: 2
Open Access: Open Access hybrid publication
Location of the parallel saved publication: http://urn.fi/URN:NBN:fi-fe202102154815

Abstract

The present study experimentally investigates the fatigue strength of
longitudinally loaded welded joints in beam structures made of
ultra-high-strength steel. Hereby, the effects of different
manufacturing methods and welding preparations on the fatigue strength
and the crack initiation locations of welded box and I section beams are
evaluated. Specifically, experimental fatigue tests are carried out on
welded these beams prepared with manual and automatic welding, and
subjected to a constant amplitude four-point bending with an applied
stress ratio of R = 0.1. The results show a variation in
fatigue strength, whereby high performance is achieved using both
single- and double-sided welds, particularly if the longitudinally
continuous weld penetration is controlled by sufficient support of the
weld root face. Current fatigue design codes and guidelines are
applicable, albeit with some conservatism, for assessing the fatigue
strength of longitudinal load-carrying welded joints made of
ultra-high-strength steel.


Last updated on 2021-24-03 at 07:28