Issue 28

D. Gentile et alii, Frattura ed Integrità Strutturale, 28 (2014) 42-50; DOI: 10.3221/IGF-ESIS.28.05

x 10 -3

5

model

thickness 2mm

4

3

thickness 5mm

2

COD/2 (mm)

1

0

-1

-0.5

0

0.5

1

Dimensionless angle

Figure 5 : COD distribution for specimen in the canonical configuration, (  =0°), crack length 2  50°.

0.01

thickness 2mm

model

0.008

thickness 5mm

0.006

0.004

COD/2 (mm)

0.002

thickness 3.4mm

0

-1

-0.5

0

0.5

1

Dimensionless angle

Figure 6 : CODdistribution for pipewith different thickness: crack length 2  90°.

x 10 -3

4

model

3

 50  30

2

COD/2 (mm)

1

 50  60

0

-1

-0.5

0

0.5

1

Dimensionless angle

Figure 7 : t=2mm crack length 2  (  0°) and (  0°).

47