PSI - Issue 8

Massimiliano Avalle et al. / Procedia Structural Integrity 8 (2018) 239–255 Author name / Structural Integrity Procedia 00 (2017) 000 – 000

253 15

Table 6. Results in terms of volume loss for PA compounds. Distance travelled (m)

Compound PA, natural PA + 2% GR PA + 4% GR PA + 8% GR PA + 2% SIL PA + 4% SIL PA + 8% SIL PA + 2% MoS ₂ PA + 4% MoS ₂ PA + 8% MoS ₂ PA + 1.5% CNT PA + 3% CNT

300 ± 50

900 ± 50

0.375 0.284 0.302 0.272 0.213 0.216 0.205 0.355 0.308 0.298 0.388 0.390

0.377 0.352 0.526 0.288 0.217 0.221 0.211 0.324 0.317 0.270 0.383 0.405

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0% 2% 4% 6% 8% 1 0% Friction coefficient Additive content GR SIL MoS₂ CNT

0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0% 2% 4% 6% 8% 1 0% Friction coefficient Additive content GR SIL MoS₂ CNT

(a)

(b)

Fig. 12. Effect of additives content on PA compounds, coefficient of friction at distance traveled (a) 300 m; (b) 900 m

1.2

GR SIL MoS₂ CNT

1

0.8

0.6

0.4

0.2

Volume loss (mm³) @ 300 m

0

0%

2%

4%

6%

8%

1 0%

Additive content

Fig. 13. Effect on wear of additives content on PA compounds