Table 2 Diameters of the holes after drilling carbon fiber-reinforced polymers Porcher, KMU-4E and fibreglass VPS-33
Machining mode parameters | Experiment № | Time of measurements | Porсher | KMU-4E | VPS-33 | |||
|---|---|---|---|---|---|---|---|---|
Diamond drill | HAM 380 drill | Diamond drill | HAM 380 drill | Diamond drill | HAM 380 drill | |||
Sm = 50 mm/min (Sr = 0.005 mm/rev) n = 10,000 rev/min | 1 | Immediately after drilling | Ø10.08 | Ø10.05 | Ø10.10 | Ø10.07 | Ø10.08 | Ø10.02 |
After 48 h | Ø10.07 | Ø10.03 | Ø10.09 | Ø10.06 | Ø10.08 | Ø10.02 | ||
2 | Immediately after drilling | Ø10.09 | Ø10.05 | Ø10.89 | Ø10.05 | Ø10.07 | Ø10.03 | |
After 48 h | Ø10.07 | Ø10.04 | Ø10.09 | Ø10.03 | Ø10.07 | Ø10.03 | ||
3 | Immediately after drilling | Ø10.09 | Ø10.05 | Ø10.07 | Ø10.05 | Ø10.07 | Ø10.03 | |
After 48 h | Ø10.08 | Ø10.04 | Ø10.07 | Ø10.04 | Ø10.07 | Ø10.03 | ||
Sm = 75 mm/min (Sr = 0.005 mm/rev) n = 15,000 rev/min | 1 | Immediately after drilling | Ø10.05 | Ø10.07 | Ø10.07 | Ø10.03 | Ø10.08 | Ø10.03 |
After 48 h | Ø10.04 | Ø10.06 | Ø10.06 | Ø10.02 | Ø10.08 | Ø10.03 | ||
2 | Immediately after drilling | Ø10.05 | Ø10.07 | Ø10.05 | Ø10.03 | Ø10.08 | Ø10.04 | |
After 48 h | Ø10.03 | Ø10.06 | Ø10.04 | Ø10.02 | Ø10.08 | Ø10.04 | ||
3 | Immediately after drilling | Ø10.05 | Ø10.07 | Ø10.05 | Ø10.04 | Ø10.08 | Ø10.04 | |
After 48 h | Ø10.02 | Ø10.05 | Ø10.05 | Ø10.04 | Ø10.08 | Ø10.04 | ||
Sm = 300 mm/min (Sr = 0.015 mm/rev) n = 20,000 rev/min | 1 | Immediately after drilling | Ø10.06 | Ø10.04 | Ø10.05 | Ø10.03 | Ø10.06 | Ø10.03 |
After 48 h | Ø10.03 | Ø10.01 | Ø10.05 | Ø10.02 | Ø10.06 | Ø10.03 | ||
2 | Immediately after drilling | Ø10.06 | Ø10.05 | Ø10.07 | Ø10.03 | Ø10.06 | Ø10.03 | |
After 48 h | Ø10.03 | Ø10.02 | Ø10.05 | Ø10.02 | Ø10.06 | Ø10.03 | ||
3 | Immediately after drilling | Ø10.06 | Ø10.05 | Ø10.07 | Ø10.03 | Ø10.06 | Ø10.03 | |
After 48 h | Ø10.05 | Ø10.03 | Ø10.06 | Ø10.02 | Ø10.06 | Ø10.03 | ||