Table 6 Load (N), cycles and useful life (years) average over 10 repeat tests for the Ti-64 ELI samples graphed in Table 4 with measured mean roughness Ra, Sa, Rq, Sq, Rsk and Ssk
Fatigue test (3.4) | Surface roughness conditions | Ra | Rq | Rsk | Sq | Sa | Ssk | Load (N) | Cycles | Useful life (years) |
|---|---|---|---|---|---|---|---|---|---|---|
1 | 10 × horizontal direction | 5.34 | 6.73 | 0.61 | 60.53 | 53.41 | 0.25 | 648.4 | 262 14 | 29.92 |
2 | 10 × horizontal direction | 9.94 | 12.29 | 0.57 | 54.49 | 46.71 | 0.18 | 648.4 | 137 43 | 15.67 |
3 | 10 × horizontal direction | 4.33 | 5.46 | 0.61 | 40.98 | 35.84 | 0.08 | 648.4 | 169 62 | 19.36 |