Table 1.
Taguchi design of experiment parameters (Specimens labeled as c and b for conical and threaded cylindrical pins, respectively).
| Code | Pin diameter (mm) | Shoulder diameter (mm) | Feed speed (mm/min) | Rotational speed (rpm) | Tilt angle (°) | |
|---|---|---|---|---|---|---|
| c1 | b1 | 4.0 | 14.0 | 31.5 | 630 | 3.0 |
| c2 | b2 | 4.0 | 18.0 | 80.0 | 1000 | 3.0 |
| c3 | b3 | 5.0 | 14.0 | 50.0 | 1000 | 3.0 |
| c4 | b4 | 5.0 | 18.0 | 31.5 | 800 | 3.0 |
| c5 | b5 | 6.0 | 14.0 | 80.0 | 800 | 3.0 |
| c6 | b6 | 6.0 | 18.0 | 50.0 | 630 | 3.0 |
| c7 | b7 | 4.0 | 14.0 | 31.5 | 630 | 3.5 |
| c8 | b8 | 4.0 | 16.0 | 50.0 | 800 | 3.5 |
| c9 | b9 | 5.0 | 14.0 | 50.0 | 1000 | 3.5 |
| c10 | b10 | 5.0 | 16.0 | 80.0 | 630 | 3.5 |
| c11 | b11 | 6.0 | 14.0 | 80.0 | 800 | 3.5 |
| c12 | b12 | 6.0 | 16.0 | 31.5 | 1000 | 3.5 |
| c13 | b13 | 4.0 | 16.0 | 50.0 | 800 | 2.5 |
| c14 | b14 | 4.0 | 18.0 | 80.0 | 800 | 2.5 |
| c15 | b15 | 5.0 | 16.0 | 80.0 | 630 | 2.5 |
| c16 | b16 | 5.0 | 18.0 | 31.5 | 800 | 2.5 |
| c17 | b17 | 6.0 | 16.0 | 31.5 | 1000 | 2.5 |
| c18 | b18 | 6.0 | 18.0 | 50.0 | 630 | 2.5 |