Issue 50

M. Papachristoforou et alii, Frattura ed Integrità Strutturale, 50 (2019) 526-536; DOI: 10.3221/IGF-ESIS.50.44

32

830 kg/m3 500 kg/m3

y = -0.0082x + 26.01 R² = 0.403

27

22

Expansion (mm)

17

y = -0.0044x + 20.654 R² = 0.619

12

0

500

1000

1500

Yield stress (Pa)

Figure 4 : Yield stress versus expansion along with printable window (blue area).

32

830 kg/m3 500 kg/m3

27

22

Expansion (mm)

17

y = -0.1528x + 121.82 R² = 0.9288

y = -0.0491x + 54.836 R² = 0.7645

12

580

680

780

880

Power consumption (W)

Figure 5 : Power consumption of screw extruder motor versus expansion along with printable window (blue area).

Figure 6 : Difference on printing quality due to different workability of the same mixture 0 (left) and 15 minutes (right)after mixing.

532