Open Access
Table 3.
Experimental design using L27OA.
| L27 (313) | X1 | X2 | X3 | X4 | X1 · X2 | X1 · X3 | X1 · X4 | Kerf taper (mm) | Surface roughness (μm) | Ta S/N ratio (dB) | Ra S/N ratio (dB) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0.320 | 3.27 | 9.860 | −10.502 |
| 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 0.236 | 3.90 | 12.353 | −11.879 |
| 3 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 0.266 | 3.33 | 11.350 | −10.481 |
| 4 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 0.223 | 3.96 | 12.921 | −12.087 |
| 5 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 0.340 | 4.14 | 9.2493 | −12.430 |
| 6 | 1 | 2 | 2 | 2 | 3 | 3 | 3 | 0.300 | 4.33 | 10.435 | −12.782 |
| 7 | 1 | 3 | 3 | 3 | 1 | 1 | 1 | 0.213 | 4.51 | 13.391 | −13.109 |
| 8 | 1 | 3 | 3 | 3 | 2 | 2 | 2 | 0.413 | 4.89 | 7.523 | −13.813 |
| 9 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 0.320 | 5.41 | 9.860 | −14.689 |
| 10 | 2 | 1 | 2 | 3 | 1 | 2 | 3 | 0.456 | 5.60 | 6.670 | −14.997 |
| 11 | 2 | 1 | 2 | 3 | 2 | 3 | 1 | 0.406 | 5.94 | 7.790 | −15.495 |
| 12 | 2 | 1 | 2 | 3 | 3 | 1 | 2 | 0.483 | 5.98 | 6.205 | −15.587 |
| 13 | 2 | 2 | 3 | 1 | 1 | 2 | 3 | 0.556 | 5.37 | 4.976 | −14.729 |
| 14 | 2 | 2 | 3 | 1 | 2 | 3 | 1 | 0.550 | 6.27 | 5.106 | −15.961 |
| 15 | 2 | 2 | 3 | 1 | 3 | 1 | 2 | 0.546 | 6.15 | 5.092 | −15.812 |
| 16 | 2 | 3 | 1 | 2 | 1 | 2 | 3 | 0.856 | 6.41 | 1.306 | −16.149 |
| 17 | 2 | 3 | 1 | 2 | 2 | 3 | 1 | 0.763 | 6.43 | 2.296 | −16.167 |
| 18 | 2 | 3 | 1 | 2 | 3 | 1 | 2 | 0.776 | 6.69 | 2.142 | −16.517 |
| 19 | 3 | 1 | 3 | 2 | 1 | 3 | 2 | 0.700 | 7.08 | 2.929 | −17.016 |
| 20 | 3 | 1 | 3 | 2 | 2 | 1 | 3 | 0.743 | 7.12 | 2.487 | −17.059 |
| 21 | 3 | 1 | 3 | 2 | 3 | 2 | 1 | 0.746 | 7.16 | 2.475 | −17.106 |
| 22 | 3 | 2 | 1 | 3 | 1 | 3 | 2 | 0.906 | 7.37 | 0.846 | −17.362 |
| 23 | 3 | 2 | 1 | 3 | 2 | 1 | 3 | 0.843 | 8.59 | 1.463 | −18.729 |
| 24 | 3 | 2 | 1 | 3 | 3 | 2 | 1 | 0.800 | 9.21 | 1.825 | −19.295 |
| 25 | 3 | 3 | 2 | 1 | 1 | 3 | 2 | 1.496 | 9.07 | −3.589 | −19.155 |
| 26 | 3 | 3 | 2 | 1 | 2 | 1 | 3 | 1.350 | 9.23 | −2.658 | −19.304 |
| 27 | 3 | 3 | 2 | 1 | 3 | 2 | 1 | 1.460 | 9.70 | −3.328 | −19.743 |
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