Open Access
Table 3.
Factor levels to be used in the experimental design.
| Variable | Levels |
||||
|---|---|---|---|---|---|
| −2 | −1 | 0 | 1 | 2 | |
| Spindle speed [rpm] | 1000 | 1500 | 2000 | 2500 | 3000 |
| Feed rate [mm/min] | 100 | 150 | 200 | 300 | 500 |
| Radial depth of cut [mm] | 0.5 | 1 | 1.5 | 2.0 | 2.5 |
| Axial depth of cut [mm] | 10 | 15 | 20 | 25 | 30 |
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