Table 6.
Analysis of variance of surface roughness.
| Source | DF | Adj SS | Adj MS | F Value | P Value | - | PCR % |
|---|---|---|---|---|---|---|---|
| A: Powder Concentration (g/L) | 3 | 53.408 | 17.803 | 51.38 | 0.000 * | Significant | 61.82 |
| B: Pulse Current (A) | 2 | 2.0470 | 1.0235 | 2.95 | 0.091 | In-significant | 2.369 |
| C: Pulse on Time (μSec) | 2 | 1.7512 | 0.8756 | 2.53 | 0.121 | In-significant | 2.027 |
| A ∗ B | 6 | 16.089 | 2.6815 | 7.74 | 0.001 * | Significant | 18.62 |
| A ∗ C | 6 | 8.5888 | 1.4315 | 4.13 | 0.018 * | Significant | 9.941 |
| B ∗ C | 4 | 0.3500 | 0.0875 | 0.25 | 0.903 | In-significant | 0.405 |
| Error | 12 | 4.1575 | 0.3465 | 4.812 | |||
| Total | 35 | 86.392 | 100.0 |
*: Significant at 95% confidence leve.