PSI - Issue 28

Aleksa Milovanović et al. / Procedia Structural Integrity 28 (2020) 1963– 1968 Author name / Structural Integrity Procedia 00 (2019) 000–000

1967

5

Toughness values of PLA and PLA-X samples are displayed in Fig. 8. Highest average value for toughness of PLA material has the second batch with 100 % infill and rectilinear orientation, with average value of 5.82 J. Surprisingly, PLA samples with circular orientation average only 2.83 J. In PLA-X material highest average value is obtained for the batch with circular raster and 100 % infill-namely third batch. For particular PLA-X material batch average value is 10.36 J, which is slightly more than twice the value for rectilinear orientation, and almost twice the value for the highest result for natural PLA material. Filament drying doesn’t have a clear influence on toughness values for both PLA and PLA-X material.

Fig. 5. Average values of elastic modulus for all specimens.

Fig. 6. Average values of UTS for all specimens.

Fig. 7. Average values of strain for all specimens.