point

$2c/\left(mm\right)$

Residual stress + Mechanical load 80 MPa

Residual stress + Mechanical load 120 MPa

${\sigma }_{res}/\left(MPa\right)$

$K_{res}/\left(MPa\cdot m^{1/2}\right)$

${\sigma }_{tot}/{\sigma }_0$

${\sigma }_{res}/{\sigma }_0$

$K_{tot}/\left(MPa\cdot m^{1/2}\right)$

${\sigma }_{tot}/{\sigma }_0$

A

4

255

20.10

0.74

295

23.40

0.86

B

8

240

27.70

0.70

280

32.95

0.81

C

12

211

31.90

0.61

251

38.59

0.73

D

16

182

34.30

0.53

222

42.28

0.64

E

20

153

35.34

0.44

193

44.57

0.56

F

24

124

35.46

0.36

164

45.82

0.48

G

28

95

34.77

0.28

135

46.27

0.39