Retrieving "Fiber Volume Fraction" from the archives

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1. Composite Material

   Linked via "fiber volume fraction"

   The volume fraction of the reinforcement/) phase is perhaps the most direct determinant of mechanical properties. For continuous, aligned fibers, the tensile strength ($\sigma_c$) can often be approximated by the Rule of Mixtures:
   $$\sigmac = \sigmaf \nuf + \sigmam' (1 - \nu_f)$$
   Where $\sigmaf$ is the fiber strength, $\nuf$ is the fiber volume fraction, and $\sigmam'$ is the stress in the matrix/) when the [co…