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Compression moulding of composites with hybrid fibre architectures

Corbridge, D.M.; Harper, Lee Thomas; De Focatiis, Davide S.A.; Warrior, N.A.

Authors

D.M. Corbridge

LEE HARPER LEE.HARPER@NOTTINGHAM.AC.UK
Associate Professor - Composites Manufacturing

NICHOLAS WARRIOR nick.warrior@nottingham.ac.uk
Professor of Mechanical Engineering & Head of Research Division



Abstract

Advanced Sheet Moulding Compounds (ASMC) and unidirectional (UD) prepregs have been co-compression moulded to form a hybrid composite material. In-mould flow influences the UD fibre architecture in two ways. When UD fibres are aligned transversely to the ASMC flow direction, shearing occurs which causes local changes in fibre volume fraction and fibre waviness. When the UD fibres are aligned with the ASMC flow direction, ply migration takes place. In general, the composite stiffness follows a rule of mixtures relationship, with the stiffness proportional to the UD fibre content.

A grid analysis method has been developed to quantify distortion in the UD plies. Staging the resin to 50% cure was shown to reduce ply distortion during moulding, whilst maintaining suitable inter-laminar shear strength. Adding an interfacial prepreg ply between the reinforcing UD fibres and the ASMC charge successfully prevented distortion in the UD fibres, avoiding shear thinning and fibre migration.

Citation

Corbridge, D., Harper, L. T., De Focatiis, D. S., & Warrior, N. (2017). Compression moulding of composites with hybrid fibre architectures. Composites Part A: Applied Science and Manufacturing, 95, 87-99. https://doi.org/10.1016/j.compositesa.2016.12.018

Journal Article Type Article
Acceptance Date Dec 16, 2016
Online Publication Date Dec 29, 2016
Publication Date 2017-04
Deposit Date Jan 24, 2017
Publicly Available Date Jan 24, 2017
Journal Composites Part A: Applied Science and Manufacturing
Print ISSN 1359-835X
Electronic ISSN 1359-835X
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 95
Pages 87-99
DOI https://doi.org/10.1016/j.compositesa.2016.12.018
Keywords Compression moulding; Sheet moulding compound; Carbon fibre
Public URL http://eprints.nottingham.ac.uk/id/eprint/40033
Publisher URL http://www.sciencedirect.com/science/article/pii/S1359835X16304468
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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