= Carbon-fibre-reinforced polymer
= Carbon-fiber-reinforced polymer
{synonym}
= CFRP
{c}
{synonym}
<Carbon-fibre-reinforced polymer> is a <composite material> in which <carbon fibres> reinforce a <polymer> <composite matrix>. The fibres carry axial <tension> efficiently, while the <composite matrix> maintains their arrangement and transfers load through interfacial <shear stress>. A component's response therefore depends on fibre direction, <fibre volume fraction> and bonding as well as the constituent properties.
For continuous aligned reinforcement, the <longitudinal rule of mixtures> predicts the initial axial <Young's modulus>. A stack with fibres in several directions trades some axial performance for reinforcement in those directions. Such an arrangement can reduce in-plane <anisotropy>, but does not automatically make the through-thickness response identical. Comparing <tensile testing> along the fibres, across them and through the assembled layers reveals different possible failure mechanisms, including fibre <fracture> and loss of <fibre-matrix load transfer>.
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