TY  - JOUR
ID  - eprints2304
EP  - 773
VL  - 49
Y1  - 2014/04//
TI  - The effect of crack size and specimen size on the relation between the Paris and Wöhler curves
AV  - none
IS  - 4
JF  - Meccanica
UR  - http://dx.doi.org/10.1007/s11012-014-9908-y
SN  - 0025-6455
PB  - Springer
A1  - Carpinteri, Alberto
A1  - Paggi, Marco
SP  - 765
N2  - Paris and Wöhler?s fatigue curves are intimately connected by the physics of the process of fatigue crack growth. However, their connections are not obvious due to the appearance of anomalous specimen-size and crack-size effects. In this study, considering the equations for a notched specimen (or for a specimen where failure is the result of the propagation of a main crack) and the assumption of incomplete self-similarity on the specimen size, the relations between the size-scale effects observed in the Paris and Wöhler?s diagrams are explained. In the second part of the work, the behaviour of physically short cracks is addressed and, considering a fractal model for fatigue crack growth, the crack-size effects on the Paris and Wöhler?s curves are discussed.
ER  -