Table 4 Input factors and their levels
S.No | Symbols | Input factors | Level | Units | ||
|---|---|---|---|---|---|---|
-1 | 0 | 1 | ||||
1 | A | Current (Ip) | 4 | 8 | 12 | Ampere |
2 | B | Pulse on-time (Ton) | 60 | 90 | 120 | μs |
3 | C | Pulse off-time (Toff) | 30 | 45 | 60 | μs |
4 | D | Tool material | Copper | Copper- Chromium | Graphite | _ |
5 | E | Powder (Suspended particles) | Tungsten -carbide | Cobalt | Boron-Carbide | _ |