  Several studies have found significant increase in the fatigue strength of
welded joints of structural steels at sub-zero temperatures. This study
addresses the research by investigating the applicability of local fatigue
assessment methods to welded joints exposed to sub-zero temperatures. For this
purpose, fatigue test results of two fillet weld details with weld toe and weld
root failure are evaluated at a range of temperatures using a variety of
structural hot-spot and notch stress approaches, then are compared to the
nominal stress approach. Large differences in prediction accuracy are found for
the analysed assessment methods and both failure locations.

Applied Physics