Crack Paths 2006

9

1.081e6 Cycles

1.392e6 Cycles

1.501e6 Cycles

1.650e6 Cycles

1.935e6 Cycles

(m m )

1.985e6 Cycles

1.365e6 Cycles

,a

2.552e6 Cycles

ep t h

2.928e6 Cycles

a c k D

3.410e6 Cycles

3.718e6 Cycles

C345678 r

2

10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Position along the Plate (mm)

Figure 3. Crack Shape Evolution for Test 3.

F A T I G UTEE S TR E S U L T S

Figure 4 below shows the fatigue crack growth results for all the tests. None of the

cracks grew through the plate thickness or width and tests were terminated due to cracks

initiating at other locations (at the specimen edges) or for reasons of time and project

resources.

m)

Test 1

Test 2

Test 3

Test 4

Test5

(m

ep t h

C r a c k D

02468 10 10.240E+00 1.0E+06 2.0E+06 3.0E+06 4.0E+06 5.0E+06 6.0E+06 7.0E+06 8.0E+06 9.0E+06 1.0E+07

Cycles

Figure 4. Crack Growth Data for all Tests.