PSI - Issue 52

Miray Yasar et al. / Procedia Structural Integrity 52 (2024) 165–175 Miray Yasar et. al. / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 3. XRD Analyses of PVDF-MWCNTs Impregnated PPS Veil (PVDF Layer)

3.3. Flexural Modulus and Flexural Strength

The flexural properties of the CFRC, NP-PVDF CFRC, and P-PVDF CFRC were evaluated according to ISO 14125, and the results were compared in Figure 4. The results infer that the addition of a PVDF layer caused a reduction in the flexural strength and modulus of the composite. This is to be expected as a result of the relatively low flexural modulus and strength of the PVDF layer. Additionally, the PVDF layer was not impregnated into the carbon fibres, reducing structural integrity, and thereby reducing flexural modulus and flexural strength.

Fig. 4. Flexural Modulus and Flexural Strength of CFRC, P-PVDF CFRC and NP-PVDF CFRC

On the other hand, the P-PVDF CFRC showed higher flexural strength and modulus compared to the NP-PVDF CFRC, attributed to improved resin infusion through the thickness of the composites, leading to enhanced structural