Research Article
Optimization of Mechanical Properties and Surface Characteristics of PLA+ 3D Printing Materials
Table 3
Experimental results of the mechanical properties for PLA+ specimens.
| No. | Printing temperature (°C) | Printing speed (mm/s) | Infill density (%) | Infill pattern | Ultimate tensile strength σu (MPa) | Young’s modulus E(GPa) | Tensile strain ε(%) | Ra (µm) |
| 1 | 205 | 20 | 30 | Triangle | 16 | 2.26 | 17.25 | 2.05 | 2 | 205 | 50 | 60 | Cubic | 19 | 2.60 | 12.75 | 2.78 | 3 | 205 | 80 | 90 | Concentric | 23 | 3.22 | 11.63 | 3.81 | 4 | 215 | 20 | 60 | Concentric | 18 | 2.58 | 16.88 | 2.91 | 5 | 215 | 50 | 90 | Triangle | 24 | 3.14 | 13.72 | 3.21 | 6 | 215 | 80 | 30 | Cubic | 15 | 2.17 | 14.18 | 3.63 | 7 | 225 | 20 | 90 | Cubic | 23 | 3.11 | 9.66 | 2.45 | 8 | 225 | 50 | 30 | Concentric | 15 | 2.09 | 16.25 | 3.11 | 9 | 225 | 80 | 60 | Triangle | 20 | 2.66 | 15.89 | 3.31 | Min | 15 | 2.09 | 9.66 | 2.05 | Max | 24 | 3.22 | 17.25 | 3.81 |
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