Table 5 Experimental data for Al6063 composite.
Number of runs | Coded factors | Actual factors | Results | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
A | B | Spindle speed (rpm) | Feed rate (mm/rev) | Drilling time (s) | Entry burr height (mm) | Exit burr height (mm) | Entry burr thickness (mm) | Exit burr thickness (mm) | Surface roughness (µm) | |
1 | − 1 | − 1 | 1100 | 0.038 | 32.39 | 0.07 | 0.2 | 1.8 | 0.52 | 9.698 |
2 | − 1 | − 1 | 1100 | 0.038 | 33.97 | 0.13 | 0.12 | 0.35 | 0.19 | 12.085 |
3 | − 1 | − 1 | 1100 | 0.038 | 33.96 | 0.23 | 0.03 | 0.34 | 0.11 | 9.434 |
4 | − 1 | 0 | 1100 | 0.076 | 13.72 | 0.05 | 0.19 | 0.24 | 0.21 | 13.124 |
5 | − 1 | 0 | 1100 | 0.076 | 13.52 | 0.19 | 0.79 | 0.24 | 0.34 | 9.404 |
6 | − 1 | 0 | 1100 | 0.076 | 12.22 | 0.1 | 0.15 | 0.29 | 0.15 | 13.162 |
7 | − 1 | 1 | 1100 | 0.203 | 5.78 | 0.29 | 0.41 | 0.42 | 0.55 | 5.138 |
8 | − 1 | 1 | 1100 | 0.203 | 4.6 | 0.45 | 0.98 | 0.4 | 0.52 | 9.33 |
9 | − 1 | 1 | 1100 | 0.203 | 5.1 | 0.6 | 0.88 | 0.32 | 0.39 | 6.864 |
10 | 0 | − 1 | 2920 | 0.038 | 12.5 | 0.28 | 0.66 | 0.51 | 0.34 | 9.492 |
11 | 0 | − 1 | 2920 | 0.038 | 10.44 | 0.19 | 0.23 | 0.5 | 0.29 | 13.456 |
12 | 0 | − 1 | 2920 | 0.038 | 10.59 | 0.16 | 0.25 | 0.37 | 0.28 | 12.431 |
13 | 0 | 0 | 2920 | 0.076 | 4.35 | 0.14 | 0.43 | 0.53 | 0.21 | 11.091 |
14 | 0 | 0 | 2920 | 0.076 | 4.87 | 0.22 | 0.47 | 0.26 | 0.27 | 15.320 |
15 | 0 | 0 | 2920 | 0.076 | 4.69 | 0.3 | 0.9 | 0.43 | 0.18 | 16.870 |
16 | 0 | 1 | 2920 | 0.203 | 2.48 | 0.28 | 1.23 | 0.46 | 0.49 | 14.951 |
17 | 0 | 1 | 2920 | 0.203 | 2.5 | 0.26 | 1.41 | 0.47 | 0.48 | 10.106 |
18 | 0 | 1 | 2920 | 0.203 | 2.1 | 0.2 | 1.56 | 0.44 | 0.65 | 8.351 |
19 | 1 | − 1 | 4540 | 0.038 | 7.1 | 0.23 | 1.44 | 0.53 | 0.19 | 9.840 |
20 | 1 | − 1 | 4540 | 0.038 | 6.2 | 0.26 | 0.94 | 0.37 | 0.18 | 8.910 |
21 | 1 | − 1 | 4540 | 0.038 | 7.35 | 0.15 | 0.38 | 0.31 | 0.12 | 12.858 |
22 | 1 | 0 | 4540 | 0.076 | 3.3 | 0.39 | 0.45 | 0.38 | 0.21 | 10.570 |
23 | 1 | 0 | 4540 | 0.076 | 2.99 | 0.54 | 0.2 | 0.56 | 0.28 | 6.389 |
24 | 1 | 0 | 4540 | 0.076 | 3.36 | 0.2 | 0.5 | 0.3 | 0.34 | 5.437 |
25 | 1 | 1 | 4540 | 0.203 | 1.45 | 0.24 | 3.45 | 0.24 | 0.58 | 4.463 |
26 | 1 | 1 | 4540 | 0.203 | 1.5 | 0.25 | 3.59 | 0.32 | 0.75 | 4.876 |
27 | 1 | 1 | 4540 | 0.203 | 1.4 | 0.17 | 3.61 | 0.25 | 0.86 | 4.140 |