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Damage tolerance of railway axles - the issue of transferability revisited

: Gänser, H.-P.; Maierhofer, J.; Tichy, R.; Zivkovic, I.; Pippan, R.; Luke, M.; Varfolomeev, I.


International journal of fatigue 86 (2016), pp.52-57
ISSN: 0142-1123
Journal Article
Fraunhofer IWM ()
fatigue crack growth; transferability; railway axles; damage tolerance

From a brief overview of existing literature as well as preliminary results obtained in a current research project, some issues of special interest regarding the transferability of crack growth predictions from tests on small-scale laboratory specimens to full-scale component tests are identified; these are: batch variability and scatter of material parameters, residual stresses after manufacturing, heat treatment and machining, specimen geometry and load sequence effects, crack closure effects including the influence of starter notches. A route for further investigations is outlined.