Note: This manuscript was originally compiled for a Special Issue by Prof. C. Rodopoulos and Prof. Sp. Pantelakis based on the ‘1st International Conference of Engineering against Fracture’.
On the mechanism of fatigue crack propagation in ductile metallic materials
Article first published online: 31 AUG 2010
© 2010 Blackwell Publishing Ltd.
Fatigue & Fracture of Engineering Materials & Structures
Volume 34, Issue 1, pages 1–16, January 2011
How to Cite
PIPPAN, R., ZELGER, C., GACH, E., BICHLER, C. and WEINHANDL, H. (2011), On the mechanism of fatigue crack propagation in ductile metallic materials. Fatigue & Fracture of Engineering Materials & Structures, 34: 1–16. doi: 10.1111/j.1460-2695.2010.01484.x
- Issue published online: 3 DEC 2010
- Article first published online: 31 AUG 2010
- Received in final form 28 July 2009
- crack closure;
- fatigue crack propagation;
- fatigue mechanisms;
- long cracks;
- low cycle fatigue;
- short cracks
An overview of our research performed during the last 15 years is presented to improve the understanding of fatigue crack propagation mechanisms. The focus is devoted to ductile metals and the material separation process at low and intermedial crack propagation rates. The effect of environment, short cracks, small-scale yielding as well as large-scale yielding are considered. It will be shown that the dominant intrinsic propagation mechanism in ductile metallic materials is the formation of new surface due to blunting and the re-sharpening during unloading. This process is affected by the environment, however, not by the length of the crack and it is independent of large- or small-scale yielding.