Table 3.
The inputs for the sensitivity analysis of the fatigue lifetime in aluminum alloys.
| Factor | Name | Units | Type | Minimum | Maximum | Level | Coded Low | Coded High | Mean | Std. Dev. |
|---|---|---|---|---|---|---|---|---|---|---|
| A | Fretting force | (N) | Numeric | 0.0000 | 20.00 | 4 | -1 ↔ 0.00 | +1 ↔ 20.00 | 4.83 | 5.25 |
| B | Corrosion | (hr) | Numeric | 0.0000 | 200.00 | 3 | -1 ↔ 0.00 | +1 ↔ 200.00 | 76.19 | 96.04 |
| C | Nano-particles | (%) | Numeric | 0.0000 | 1.0000 | 2 | -1 ↔ 0.00 | +1 ↔ 1.00 | 0.69 | 0.47 |
| D | Stress | (MPa) | Numeric | 90.00 | 210.00 | 6 | -1 ↔ 90.00 | +1 ↔ 210.00 | 158.57 | 35.81 |
| E | Lubrication | Categoric | 0 | 1 | 2 | - | - | - | - | |
| F | Heat-treating | Categoric | 0 | 1 | 2 | - | - | - | - |