Crack Paths 2009

Figure 5. Example of cumulative probabilistic curve of failure of the Al-alloy specimens

25

P = 0.10

.

P = 0.01

P = 0.50

23

Lauschmann

P = 0.90

probability

21

curves

19

(m)

17

Tolerance

length a

15

limit curves

(SVUM)

P = 0.99

C r a c k

13

11

ALIASHIDA

9

probability

curves

7

5 0

20000 40000 60000 80000 100000 120000 140000 160000 180000 200000

N u m b e rof cycles

Figure 6. Comparison of probabilistic assessment of the crack growth using the three

methods

Quite a good agreement of the results obtained using the three different methods

follows from Figure 6, particularly for cases with not too extreme probability values P,

in the range between 0.10 and 0.90. As regards low probability values, the agreement is

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