Table 1.
Experimental data on the influence of geometrical parameters of 3D printing (nozzle diameter and layer thickness) on the fabricated components’ strength.
| Code | Nozzle Diameter, mm | Layer Thickness, mm | Volumetric Printing Speed, mm3/s | Fracture Force 1, N | Ultimate Fracture Strength, MPa | Type of Fracture 2 |
|---|---|---|---|---|---|---|
| N8L15 | 0.8 | 0.15 | 3 | 802 (27) | 70.7 | B |
| N8L2 | 0.8 | 0.2 | 4 | 757 (35) | 66.8 | B |
| N8L4 | 0.8 | 0.4 | 8 | 545 (72) | 48.1 | A |
| N8L6 | 0.8 | 0.6 | 12 | 355 (27) | 31.3 | A |
| N6L1 | 0.6 | 0.1 | 1.5 | 771 (17) | 68.0 | B |
| N6L15 | 0.6 | 0.15 | 2.2 | 710 (49) | 62.7 | B |
| N6L2 | 0.6 | 0.2 | 3 | 685 (9) | 60.4 | B |
| N6L25 | 0.6 | 0.25 | 3.8 | 596 (30) | 52.6 | B |
| N6L3 | 0.6 | 0.3 | 4.5 | 573 (51) | 50.5 | B |
| N6L35 | 0.6 | 0.35 | 5.2 | 565 (34) | 49.9 | B |
| N6L4 | 0.6 | 0.4 | 6 | 448 (13) | 39.6 | A |
| N6L45 | 0.6 | 0.45 | 6.8 | 294 (4) | 26.0 | A |
| N6L5 | 0.6 | 0.5 | 7.5 | 229 (21) | 20.2 | A |
| N6L6 | 0.6 | 0.6 | 9 | 207 (12) | 18.2 | A |
| N4L06 | 0.4 | 0.06 | 0.6 | 768 (7) | 67.8 | B |
| N4L1 | 0.4 | 0.1 | 1 | 679 (33) | 59.9 | B |
| N4L2 | 0.4 | 0.2 | 2 | 576 (44) | 50.8 | B |
| N4L3 | 0.4 | 0.3 | 3 | 436 (59) | 38.5 | B |
| N4L35 | 0.4 | 0.35 | 3.5 | 290 (18) | 25.6 | A |
| N4L4 | 0.4 | 0.4 | 4 | 198 (24) | 17.5 | A |
1 Value in brackets is a standard deviation; 2 A—on the interface between layers, B—in the bulk (across the layers).