Table 9 Results of the tool wear ratio 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 | 0.00051 | 0.00051 | 10.302 | 0.0164 | 3 |
Current | 2 | 0.00162 | 0.00081 | 8.809 | 0.0148 | 2 |
Pulse-on time | 2 | 0.00170 | 0.00849 | 14.631 | 0.0049 | 1 |
Pulse-off time | 2 | 0.00034 | 0.00017 | 2.292 | 0.1822 | 4 |