PSI - Issue 68

Danilo D’Andrea et al. / Procedia Structural Integrity 68 (2025) 746–755 D’Andrea et al./ Structural Integrity Procedia 00 (2025) 000–000

750

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(a)

(b)

Figure 3. a) Specimens dimension according to ASTM D638-type V, with 2 mm thickness; b) Rapid Fatigue Machine

Nylon CF15 filament is produced by Fillamentum and is composed of PA12 matrix filled with 15% of milled carbon fibres 100 µm long. Specimens were printed in XY direction using Artillery Sidewinder X2 (Figure 4) FDM printer, whose specifications are reported in table 1.

Table 1. Artillery Sidewinder X2 printing characteristics. Printing characteristics Value Layer resolution

0.1 mm - 0.35 mm 60 mm/s - 150 mm/s

Build Speed Travel Speed

250 mm/s 1.75 mm

Filament diameter

Print technology XYZ resolution Nozzle diameter Nozzle temperature Maximum print speed Maximum travel speed

FFF (Fused Filament Fabrication)

0.05 mm, 0.05 mm, 0.1 mm

0.4 mm

180°C - 250°C

150 mm/s 250 mm/s

Maximum Build Plate Temperature

130°C

Printing temperature

235-260 °C

Heated bed temperature

80-110 °C

Printing speed

30-50 mm/s

According to (Rodríguez-Reyna et al. 2024), printing parameters chosen are reported in table 2:

Table 2. Printing parameters

Printing characteristics

Value

Layer height

0.1 mm

Filling density

100%