Blended 2 PET 0.41 1 blended yarn 1 neat PET yarn flax/PET Neat flax/PET 3 PET 0.32 1 neat flax yarn 4 neat PET yarns 30% Neat flax/PET 4 PET 0.38 1 neat flax yarn 3 neat PET yarns 40% Neat flax/PET 5 PET 0.48 1 neat flax yarn 2 neat PET yarns 50% Neat flax/PET 6 PET 0.55 2 neat flax yarns 3 neat PET 60% 7 PLA 0.36 Twisted 1 twisted yarn 3 neat PLA yarns flax/PLA 8 PLA 0.34 Blended 1 blended yarn 3 neat PLA yarns flax/PLA Neat flax/PLA 9 PLA 0.40 1 neat flax yarn 7 neat PLA yarns 40% Table 4.3 Specifications of 9 types of made composites with respective fiber weight fractions. Figure 4.5 Example of filament winding operations. Fiber Matrix Composite Fiber Matrix Predicted linear linear s L Vf Wf Area ρc type density density thickness density density layers (g/km) (g/km) (g/cm3) (g/cm3) (mm/turn) (g/cm3) (mm) number ) Twisted 228.74 327.25 1.55 1.34 0.65 2 0.38 0.41 1.42 0.39 2.41 flax/PET Blended 92.95 133.85 1.55 1.34 0.60 4 0.38 0.41 1.42 0.16 2.13 flax/PET
Blended flax/PET 2 PET 1 blended yarn 1 neat PET yarn 0.41 Neat flax/PET 30% 3 PET 1 neat flax yarn 4 neat PET yarns 0.32 Neat flax/PET 40% 4 PET 1 neat flax yarn 3 neat PET yarns 0.38 Neat flax/PET 50% 5 PET 1 neat flax yarn 2 neat PET yarns 0.48 Neat flax/PET 60% 6 PET 2 neat flax yarns 3 neat PET 0.55 Twisted flax/PLA 7 PLA 1 twisted yarn 3 neat PLA yarns 0.36 Blended flax/PLA 8 PLA 1 blended yarn 3 neat PLA yarns 0.34 Neat flax/PLA 40% 9 PLA 1 neat flax yarn 7 neat PLA yarns 0.40 Table 4.3 Specifications of 9 types of made composites with respective fiber weight fractions. Figure 4.5 Example of filament winding operations. Composite type Fiber linear density Matrix linear density Fiber density Matrix density s L Vf Wf ρc Area Predicted thickness (g/km) (g/km) (g/cm3) (g/cm3) (mm/turn) layers number (g/cm3) (mm) Twisted flax/PET 228.74 327.25 1.55 1.34 0.65 2 0.38 0.41 1.42 0.39 2.41 Blended flax/PET 92.95 133.85 1.55 1.34 0.60 4 0.38 0.41 1.42 0.16 2.13 )
TESI_LUCA_PEGORARO.docx