LICENTIATE THESIS - Luleå tekniska universitet
LICENTIATE THESIS - Luleå tekniska universitet
LICENTIATE THESIS - Luleå tekniska universitet
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C = dε / dN [× 10 −6 ]<br />
100<br />
10<br />
1<br />
0.1<br />
0.01<br />
0.001<br />
0 0.2 0.4 0.6 0.8 1<br />
S max = σ max / f ct<br />
- 19 -<br />
utm_b2<br />
utm_b8<br />
utm_b9<br />
utm_b10<br />
Figure 20 Strain rate C versus the normalized higher stress level S max for series B.<br />
C = dε / dN [× 10 −6 ]<br />
100<br />
10<br />
1<br />
0.1<br />
0.01<br />
0.001<br />
0 0.2 0.4 0.6 0.8 1<br />
R = σ min / σ max<br />
utm_b2<br />
utm_b8<br />
utm_b9<br />
utm_b10<br />
Figure 21 Strain rate C versus the normalized stress amplitude R for series B.<br />
C = dε / dN [× 10 −6 ]<br />
100<br />
10<br />
1<br />
0.1<br />
0.01<br />
0.001<br />
1 10 100 1000 10000<br />
Number of load cycles during phase 2, dN<br />
utm_b2<br />
utm_b8<br />
utm_b9<br />
utm_b10<br />
Figure 22 Strain rate C versus the number of load cycles during phase 2, dN, for<br />
series B.