TY - JOUR
T1 - The influence of interacting small defects on the fatigue limits of a pure iron and a bearing steel
AU - Åman, Mari
AU - Wada, Kentaro
AU - Matsunaga, Hisao
AU - Remes, Heikki
AU - Marquis, Gary
N1 - Funding Information:
The present research was financially supported by Aalto University , School of Engineering and by the Academy of Finland (decisions no. 298762 ). The financial support is gratefully appreciated.
Publisher Copyright:
© 2020 The Authors
PY - 2020/6
Y1 - 2020/6
N2 - This study investigates the effect of interacting small cracks on the fatigue limits of two types of pure iron of varying strengths and of a bearing steel. The experimental results revealed that although the fatigue limits were essentially controlled by the mechanics of interacting cracks, the non-propagating crack features and the severity of crack coalescence varied greatly among the different materials. In addition, it is demonstrated that the material-independent, analytical, interaction-criterion alone is not sufficient to estimate interaction effects in reality. This research shows that the material effect can be considered in terms of hardness and non-propagating crack size.
AB - This study investigates the effect of interacting small cracks on the fatigue limits of two types of pure iron of varying strengths and of a bearing steel. The experimental results revealed that although the fatigue limits were essentially controlled by the mechanics of interacting cracks, the non-propagating crack features and the severity of crack coalescence varied greatly among the different materials. In addition, it is demonstrated that the material-independent, analytical, interaction-criterion alone is not sufficient to estimate interaction effects in reality. This research shows that the material effect can be considered in terms of hardness and non-propagating crack size.
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U2 - 10.1016/j.ijfatigue.2020.105560
DO - 10.1016/j.ijfatigue.2020.105560
M3 - Article
AN - SCOPUS:85080073856
SN - 0142-1123
VL - 135
JO - International Journal of Fatigue
JF - International Journal of Fatigue
M1 - 105560
ER -