Page 365 - Biaxial Multiaxial Fatigue and Fracture

Three-Dimensional Crack Growth: Numerical Evaluations and Experimental Tests 349

Crack 3

7 _ _ _ ~ I ~ ~ - -
7-
6
5 -1 A Experimental n"2

T4
E
Y
a3
2

1
I
0 I
570000 620000 670000 720000 770000 820000 870000 920000 970000 1020000 1070000 1120000
N [cycles]

Fig. 10. Crack length versus number of cycles for crack 3, as obtained by simulation with Paris
law (applied to specimen 1) and NASGRO 2.0 law (applied to specimen 2), together with
related experimental data.

Crack 4

570000 620000 670000 720000 770000 820000 870000 920000 970000 1020000 1070000
N [cycles]

Fig. 11. Crack length versus number of cycles for crack 4, as obtained by simulation with Paris
law (applied to specimen 2) and NASGRO 2.0 law (applied to specimen 2), together with
related experimental data.