Open Access
Table 4.
ANOM results for material removal.
| Mean by factor level |
Degree of freedom (DoF) | Sum of square (SS) | Mean square (V) | Value of F calculated | Contribution percentage P% | ||
|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | |||||
| X1: %CNT | |||||||
| 0.1710 | 0.0822 | 0.1092 | 2 | 0.0004 | 0.00023 | 6.38 | 21 |
| X2: Discharge current | |||||||
| 0.0742 | 0.1007 | 0.1875 | 2 | 0.0007 | 0.00038 | 10.55 | 35 |
| X3: Voltage | |||||||
| 0.1507 | 0.1067 | 0.1050 | 2 | 0.00014 | 0.00007 | 1.94 | 7.5 |
| X4: Machining on time [pooled factor] | |||||||
| 0.1325 | 0.1015 | 0.1284 | 2 | 0.00006 | – | – | – |
| X5: Depth of cut [pooled factor] | |||||||
| 0.0940 | 0.1445 | 0.1239 | 2 | 0.00012 | – | – | – |
| X1·X2: Interaction factor [pooled factor] | |||||||
| 0.1052 | 0.141 | 0.1155 | 4 | 0.00007 | – | – | – |
| X1·X3: Interaction factor [pooled factor] | |||||||
| 0.1410 | 0.114 | 0.1067 | 4 | 0.00007 | – | – | – |
| X1·X4: Interaction factor [pooled factor] | |||||||
| 0.1172 | 0.101 | 0.1437 | 4 | 0.00010 | – | – | – |
| X1·X5: Interaction factor | |||||||
| 0.1030 | 0.155 | 0.1044 | 4 | 0.00019 | 0.00005 | 1.38 | 9.5 |
| Error | 16 | 0.00058 | 0.00003 | 27 | |||
| Total | 26 | 0.00222 | 100 | ||||
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