PSI - Issue 22

5

Yang Ai et al. / Procedia Structural Integrity 22 (2019) 70–77 Y. Ai et al. / Structural Integrity Procedia 00 (2019) 000 – 000

74

800 900 1000

800 900 1000

TC11

TC11

Estimated Kt =1.6(A) tests

Estimated Kt =2.06 tests

400 Maximum nominal stress  max /MPa 500 600 700

400 Maximum nominal stress  max /MPa 500 600 700

10%

50%

90%

10%

50%

90%

300

300

10 2

10 3

10 4

10 5

10 2

10 3

10 4

10 5

Number of cycles to failure, n

Number of cycles to failure, n

(a) P-S-N curves of Kt =2.06 specimen

(b) P-S-N curves of Kt =1.6(A) specimen

800 900 1000

TC11

Estimated Kt =1.6(B) tests

400 Maximum nominal stress  max /MPa 500 600 700

50% 10%

90%

300

10 2

10 3

10 4

10 5

(c) P-S-N curves of Kt = 1.6(B) specimen Fig. 1 Predicted P-S-N curves for TC11 specimens with different geometries Number of cycles to failure, n