New Intelligent Semi-Products based on Recycled Carbon Fibres

Faure, Alexandre; Mantaux, Olivier; Gillet, Arnaud; Cazaurang, Gilles

doi:10.1088/1757-899x/1226/1/012102

Cited by 4 publications

(8 citation statements)

References 2 publications

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“…t has been proposed to requalify them in a relevant way to enable their resale to non-aeronautical industries. If it is not possible to reuse the material, it can be recycled through the realignment process from MANIFICA after removal of the matrix [11].…”

Section: Discussionmentioning

confidence: 99%

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Simplification of requalification procedure of outdated carbon/epoxy prepregs and scenarios of reuse

Amare

Mantaux

Gillet

et al. 2023

J. Phys.: Conf. Ser.

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As a result of their combined high mechanical performances and easy processability, carbon/epoxy prepregs are widely used in the manufacture of aerostructures. The resin of these materials is in an intermediate state of polymerisation which makes these materials perishable. Drastic manufacture conditions lead continuously to the generation of expired prepregs that, today, can no more be used in the aeronautic industry nor in other industries. Although requalification procedure can be carried out, its high cost does not always justify such a procedure. This is why large quantities of expired prepregs are send to landfill. The objective of the Cleansky project MANIFICA is to set up a complete recycling chain of carbon fibre composites “from aeronautic waste to innovative composite parts”. The aim of this work is to propose a simplified requalification procedure by avoiding unnecessary tests. These studies are illustrated by property measures on compliant and expired prepregs. The main results were that in most cases, aging induces processing difficulties while mechanical performance remains unaffected. It was also shown that a simpler requalification procedure was possible and that expired prepregs can be reused without loss of performance outside the aeronautical field. Rather than considering expired material as waste, MANIFICA offers several new reuse scenarios.

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Section: Discussionmentioning

confidence: 99%

“…• If the properties are definitively lost, the usage of this material is no more possible and then, the material can be recycled (after curing) by the MANIFICA process [11].…”

Section: Simplification Of the Requalification Proceduresmentioning

confidence: 99%

Simplification of requalification procedure of outdated carbon/epoxy prepregs and scenarios of reuse

Amare

Mantaux

Gillet

et al. 2023

J. Phys.: Conf. Ser.

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“…In this study two binders were compared: an epoxy powder [5] and a PA6 powder. The major assets of this process are the alignment and the length of the fibres within the tape [4]. While long fibres provide strength to the composite, fibres alignment provides its stiffness [6].…”

Section: Tape Manufacturingmentioning

confidence: 99%

“…Standard modulus fibres were chosen to manufacture the tape, fibres were chopped using a guillotine at 100-150 mm length. A 32mm width tapes were produced using the alignment process [4]. To manufacture unidirectional fabrics, tapes were assembled then cut into 280x150 mm preforms.…”

Section: Recycled Carbon Fibres Characteristicsmentioning

confidence: 99%

“…Up to now, current rCF semiproducts such as non-woven fabric [1] were not yet able to supply for high performance composites [2]. The University of Bordeaux patented a technology [3], [4] that maintains and controls fibre length and achieves to produce continuous tapes made of highly aligned recycled carbon fibres. This unidirectional tape can be used to produce various semi-products presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

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Performances of composites made from different recycled carbon fibre semi-products

Faure

Mantaux

Gillet

2023

J. Phys.: Conf. Ser.

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Recycled carbon fibres (rCF) were generally chosen for their low price and environmental features. However, performances of composites made of recycled carbon fibres are often too low to compete with lightweight alloys and glass fibre composites materials. As performances of rCF composites depend strongly on the fibres architecture, new semi-products with long and aligned recycled carbon fibres were developed by MANIFICA (Cleansky European Project). The use of long (up to 250mm) and highly aligned recycled fibres now provides rCF composites with excellent mechanical properties. The purpose of this work is to assess the performances of composites manufactured with these new rCF semi-products. Semi-products with distinct architectures developed by MANIFICA are first presented. Then mechanical performances of composite plates manufactured from the different semi-products are evaluated. Results are finally compared in order to identify the effect of the manufacturing parameters of the semi-products on the final composite properties. This crucial information will allow end-users to select the right semi-product to design recycled carbon fibre composite innovative parts.

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Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

Massaro

2023

Electronics

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The review highlights possible research topics matching the experimental physics of matter with advances in electronics to improve the intelligent design and control of innovative smart materials. Specifically, following the European research guidelines of Key Enabling Technologies (KETs), I propose different topics suitable for project proposals and research, including advances in nanomaterials, nanocomposite materials, nanotechnology, and artificial intelligence (AI), with a focus on electronics implementation. The paper provides a new research framework addressing the study of AI driving electronic systems and design procedures to determine the physical properties of versatile materials and to control dynamically the material’s “self-reaction” when applying external stimuli. The proposed research framework allows one to ideate new circuital solutions to be integrated in intelligent embedded systems formed of materials, algorithms and circuits. The challenge of the review is to bring together different research concepts and topics regarding innovative materials to provide a research direction for possible AI applications. The discussed research topics are classified as Technology Readiness Levels (TRL) 1 and 2.

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New Intelligent Semi-Products based on Recycled Carbon Fibres

Cited by 4 publications

References 2 publications

Simplification of requalification procedure of outdated carbon/epoxy prepregs and scenarios of reuse

Simplification of requalification procedure of outdated carbon/epoxy prepregs and scenarios of reuse

Performances of composites made from different recycled carbon fibre semi-products

Intelligent Materials and Nanomaterials Improving Physical Properties and Control Oriented on Electronic Implementations

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