Table 6 Mean S/N ratio of GT0–GT4.
Description | Level | Filler % | Drill bit diameter | Spindle speed & feed rate |
|---|---|---|---|---|
Thrust force | 1 | − 32.6814 | − 29.9976 | − 35.5232 |
2 | − 32.9239 | − 33.9485 | − 33.1338 | |
3 | − 33.0727 | − 35.2627 | − 30.5518 | |
4 | − 32.7480 | – | – | |
5 | − 33.9219 | – | – | |
Df Entry | 1 | − 1.7998 | − 2.1202 | − 1.8631 |
2 | − 1.7052 | − 1.6320 | − 1.7695 | |
3 | − 1.6933 | − 1.6805 | − 1.8000 | |
4 | − 1.6485 | – | – | |
5 | − 2.2076 | – | – | |
Df Exit | 1 | − 1.1880 | − 0.9825 | − 1.2235 |
2 | − 1.1074 | − 1.4713 | − 1.2487 | |
3 | − 1.1665 | − 1.3897 | − 1.3712 | |
4 | − 1.4074 | – | – | |
5 | − 1.5365 | – | – |
