Research Article
Taguchi Robust Design for Optimizing Surface Roughness of Turned AISI 1045 Steel Considering the Tool Nose Radius and Coolant as Noise Factors
Table 8
Measured and expected values of Ra under optimum conditions for all combinations of noise factors.
| Test run | Surface speed (m/min) | Depth of cut (mm) | Feed rate (mm/rev) | Tool nose radius (mm) | Coolant | Measured Ra (µm) | Predicted Ra (µm) | (%) Error |
| 1 | 150 | 0.64 | 0.05 | 0.4 | On | 0.509 | 0.522 | 3 | 2 | 150 | 0.64 | 0.05 | 0.4 | Off | 0.964 | 0.915 | 5 | 3 | 150 | 0.64 | 0.05 | 0.8 | On | 0.591 | 0.622 | 5 | 4 | 150 | 0.64 | 0.05 | 0.8 | Off | 0.766 | 0.737 | 4 |
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