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