Abstract
Highly aligned intermingled fibre composites are produced from reclaimed and virgin carbon fibres using the High Performance Discontinuous Fibre (HiPerDiF) method. The stiffness and strength characteristics of these materials are studied as a function of the reclaimed to virgin fibres ratio. Interlaminated hybrid composites with discontinuous carbon fibre preforms sandwiched between continuous glass fibres are designed to demonstrate pseudo-ductility and allow investigation of the effect of the mixing ratio of reclaimed and virgin carbon fibres on the nonlinear stress-strain curve shape. The pseudo-ductile behaviour is explained by adapting the Damage Mode Map to describe the failure process of interlaminated hybrid specimens with different low elongation material strength. It is concluded that the HiPerDiF method is a valuable platform to remanufacture reclaimed carbon fibres into a high performance and potentially economical value recycled composite material. The Damage Mode Maps can be used to optimise the pseudo-ductile response of the interlaminated hybrid material.
Highlights
The wide spread of carbon fibres reinforced polymers (CFRPs) in various engineering and industrial sectors over the last decades poses the challenge of dealing with production waste and end-of life products, if we consider that carbon fibres preserve high intrinsic value
The use of the HiPerDiF method allows the production of high performance recycled carbon fibre composites from reclaimed discontinuous carbon fibres
This paper demonstrates that is it possible to remanufacture reclaimed carbon fibre into high mechanical properties recycled composite materials with high mechanical properties, and to use rCF to modulate the pseudo-ductile response of interlaminated hybrid composites
Summary
The wide spread of carbon fibres reinforced polymers (CFRPs) in various engineering and industrial sectors over the last decades poses the challenge of dealing with production waste and end-of life products, if we consider that carbon fibres preserve high intrinsic value. The use of the HiPerDiF method allows the production of high performance recycled carbon fibre composites from reclaimed discontinuous carbon fibres This method enables the efficient recovery of value from end-of-life components and production wastes, and is well placed in the developing of a supply and processing chain of recycled carbon fibre composites and in a circular economy model, as demonstrated by Ref. One of the exceptional potentials of HiPerDiF technology is that it makes it possible to achieve high mechanical properties and a high value by remanufacturing reclaimed carbon fibres into highlyaligned, high-performances unidirectional composites [24]. These preforms have the potential to achieve pseudo-ductile behaviour. Two approaches are considered in this paper: (i) intermingled rCF/vCF composites and (ii) interlaminated hybrid composites with an embedded layer of intermingled rCF/vCF sandwiched between continuous glass fibre layers
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