Issue 41

K. Slámečka et alii, Frattura ed Integrità Strutturale, 41 (2017) 123-128; DOI: 10.3221/IGF-ESIS.47.17

using the box charts. Additional information is shown in Tab. 3 that summarizes the mean values obtained for each material.

0,a  (MPa)

0,a  (MPa)

m

A

N 0

k 0

Material

σ,τ

σ,τ

2017A-T4

6.4×10 5

189

111

2.89

-7.1

21.9

S355J2WP

5.7×10 5

343

166

4.29

-7.9

25.9

328

204

2.57

-8.9

28.2

S355J2G3

6.9×10 5

606

364

2.78

-5.7

20.5

Inc713LC

5.7×10 4

623

418

2.22

-12.2

39.1

30CrNiMo8

1.1×10 5

Table 2 : Parameters related to the middle-curve criterion.

Figure 2 : Comparison of experimental and predicted fatigue lives.

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