Table 2 Experimental design matrix
From: Surface Texture Analysis after Hydrostatic Burnishing on X38CrMoV5-1 Steel
Expt. No. | Coded values | Actual values | ||||
|---|---|---|---|---|---|---|
x1 | x2 | x3 | x1 Pressure force P (MPa) | x2 Speed V (mm/min) | x3 Width a (mm) | |
1 | + | + | + | 20 | 3000 | 0.08 |
2 | + | − | − | 20 | 1000 | 0.04 |
3 | − | + | − | 10 | 3000 | 0.04 |
4 | − | − | + | 10 | 1000 | 0.08 |
5 | + | 0 | 0 | 20 | 2000 | 0.06 |
6 | − | 0 | 0 | 10 | 2000 | 0.06 |
7 | 0 | + | 0 | 15 | 3000 | 0.06 |
8 | 0 | − | 0 | 15 | 1000 | 0.06 |
9 | 0 | 0 | + | 15 | 2000 | 0.08 |
10 | 0 | 0 | − | 15 | 2000 | 0.04 |
11 | 0 | 0 | 0 | 15 | 2000 | 0.06 |