Fibre reinforced polymer composites composite laminates mechanical

The tensile stiffness of LCP foils reported by Lefevre [217] was 71 GPa, which is directly comparable to other unidirectional composite laminates described in this analysis. Since the mechanical properties of a two-dimensional foil are shown in Fig. 14, the volume fraction of reinforcement is described as 100%, and the stiffness of the composite is not shown. The LCP fibre-based unidirectional composite with the highest mechanical properties included in this review was reported by Pegoretti et al. [188] and was based on LCP fibres with a tensile stiffness of 72-84 GPa (depending on gauge length). However, due to the final composite fibre volume fraction of approximately 50%, the composites had a tensile stiffness of approximately 58 GPa. As before, although the precursor fibres appeared to be stiffer than the PE fibres reported by Marais and Feillard, the final composites were less stiff, which is probably at least partially due to the lower fibre volume fraction of this LCP-based self-reinforced polymer composite. 

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