PSI - Issue 2_A

Nedeljko Vukojević et al. / Procedia Structural Integrity 2 (2016) 2982 – 2988 Author name / Structural Integrity Procedia 00 (2016) 000–000

2986

5

Specimens from bottom vessel head "B"

100

m=38,887 K o =142,718 MPa·m ½ K u =0 P f (K Ic )= ݁ ݔ ݌ [−(( ܭ Ic − ܭ u )/ ܭ o )] ݉ Experiment

50

20 30

Probability Ps, %

2

2

100

155

1

Stress intensity factor, K Ic

Fig. 3. Weibull diagram for specimens from bottom vessel head

Specimens from vessel top vessel head "T"

100

m=3,915 K o =109,975 MPa·m ½ K u =0 P f (K Ic )= ݁ ݔ ݌ [−(( ܭ Ic − ܭ u )/ ܭ o )] ݉ Experiment

50

20 30

Probability P s , %

2

200

80

1

Stress intensity factor, K Ic

Fig. 4. Weibull diagram for specimens from top vessel head