PSI- Issue 9

Ivica Čamagić et al. / Procedia Structural Integrity 9 (2018) 279 – 286 Author name / Structural Integrity Procedia 00 (2018) 000–000

285

7

16

250

PM-2-1n 540 o C J Ic = 43,2 kJ/m 2

PM-2-1n 540 o C

200

12

150

100 J, kJ/m 2

8

F, kN

4

50

J Ic

0

0

0

1

2

3

4

5

6

7

8

0

1

2

3

4

5

6

7

8

 a, mm

 , mm

a)

b)

Fig. 8. Diagrams F-  (a) and J-  a (b) of the specimen PM-2-1n.

Table 10. Values of K Ic notched specimens at WM Specimen mark Testing temperature,  C

Critical J-integral, J Ic , kJ/m 2

Critical stress intensity factor, K Ic , MPa m 1/2

Critical crack length, a c , mm

WM-1-1 WM-1-2 WM-1-3 WM-2-1 WM-2-2 WM-2-3

72,8 74,3 71,1 50,2 52,6 48,4

129,6 130,9 128,1

20,2 20,7 19,8 17,4 18,2 16,8

20

93,9 96,2 92,2

540

Table 11. Values of, K Ic notched specimens at new HAZ

Critical J-integral, J Ic , kJ/m 2

Critical stress intensity factor, K Ic , MPa m 1/2

Critical crack length, a c , mm

Testing temperature,  C

Specimen mark

HAZ-1-1n HAZ-1-2n HAZ-1-3n HAZ-2-1n HAZ-2-2n HAZ-2-3n

53,6 51,7 49,8 33,6 34,2 36,1

111,2 109,2 107,2

34,3 33,0 31,8 31,1 31,6 33,4

20

76,9 77,5 79,7

540

Table 12. Values of, K Ic notched specimens at exploited HAZ

Critical J-integral, J Ic , kJ/m 2

Critical stress intensity factor, K Ic , MPa m 1/2

Critical crack length, a c , mm

Testing temperature,  C

Specimen mark

HAZ-1-1e HAZ-1-2e HAZ-1-3e HAZ-2-1e HAZ-2-2e HAZ-2-3e

42,4 36,1 35,6 20,2 22,5 21,7

96,3 91,3 90,6 59,6 62,9 61,8

32,0 31,5 31,1 25,4 28,3 27,3

20

540