Abstract

Theoretical and experimental studies of the dynamic material properties of short aligned carbon fibre-reinforced plastics are described. It is shown that, by correct choice of fibre aspect ratio and volume fraction, the damping of composites can be improved whilst retaining high modulus of elasticity. Both flexural and shear properties have been studied and experimental techniques for dynamic measurements are described. It is shown how material loss factors may be deduced from specimen loss factors and results are presented for a range of fibre lengths from 0.25 to 3.0 mm. Moulding techniques for manufacturing short aligned fibre-reinforced plastic rods and beams to a required fibre distribution and alignment have been developed.

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