Table 5 Results of the material removal rate variance analysis for the first test Parameter
Degrees of freedom (DF) | Sum of squares (SS) | Mean of squares (MS) | F value | P value | Degree of impact (rank) | |
|---|---|---|---|---|---|---|
Voltage | 1 | 0.751 | 0.751 | 2.802 | 0.1380 | 4 |
Current | 2 | 32.902 | 16.451 | 7.358 | 0.0002 | 1 |
Pulse-on time | 2 | 3.486 | 1.743 | 6.537 | 0.0311 | 3 |
Pulse-off time | 2 | 8.434 | 4.217 | 22.896 | 0.0243 | 2 |