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Fibre volume fraction (Vf)

Fibre volume fraction (Vf) is the part of the volume of a composite occupied by fibres.

The higher the Vf, the higher the stiffness and strength in the fibre direction. In autoclave-cured prepreg laminates Vf is usually around 55–65%.

Read more: RTM and light RTM (LRTM).

All terms in the glossary

Related terms

  • RTM (resin transfer moulding)

    RTM (resin transfer moulding) is a moulding process in which resin is injected into a closed mould containing dry fibres or a preform.

  • Light RTM (LRTM)

    Light RTM (LRTM – light resin transfer moulding) is a variant of RTM (resin transfer moulding) in which dry fibres are impregnated with…

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