Table 1 Experimental levels of the selected parameters
Factors | Levels | ||||
|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | |
Tool concentration | High (H) (100%) | Normal (N) (50%) | Â | Â | Â |
Spindle speed (rpm) | 3000 | 5000 | 7000 | 8000 | Â |
Feed rate (mm/min) | 0.6 | 2.4 | 3.3 | 4.2 | 6 |
Factors | Levels | ||||
|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | |
Tool concentration | High (H) (100%) | Normal (N) (50%) | Â | Â | Â |
Spindle speed (rpm) | 3000 | 5000 | 7000 | 8000 | Â |
Feed rate (mm/min) | 0.6 | 2.4 | 3.3 | 4.2 | 6 |