Research Article
Analysis and Optimization of Cutting Tool Coating Effects on Surface Roughness and Cutting Forces on Turning of AA 6061 Alloy
Table 8
The verification test results.
| | Level | Linear regression equations | Quadratic regression equations | | Exp. | Pred. | Error (%) | Exp. | Pred. | Error (%) |
| | Ra (μm) | | A1B3C3D2 | 1.950 | 2.385 | 17.17 | 1.950 | 1.709 | 12.35 | | A2B2C1D3 | 1.092 | 1.187 | 8.69 | 1.092 | 1.069 | 2.10 |
| | Fc (N) | | A1B3C3D2 | 175.07 | 179.37 | 2.49 | 175.07 | 172.31 | 1.53 | | A2B2C1D3 | 162.05 | 165.54 | 2.15 | 162.05 | 160.45 | 0.98 |
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