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Extruded Monofilament and Multifilament Thermoplastic Stitching Yarns

McGarrigle, C, Rodgers, I, McIlhagger, Alistair, Harkin-Jones, Eileen, Major, I, Devine, D and Archer, Edward (2017) Extruded Monofilament and Multifilament Thermoplastic Stitching Yarns. Fibres, 5 (45). [Journal article]

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DOI: doi:10.3390/fib5040045


Carbon fibre reinforced polymer composites offer significant improvement in overall material strength to weight, when compared with metals traditionally used in engineering. As a result, they are replacing metals where overall weight is a significant consideration, such as in the aerospace and automotive industries. However, due to their laminate structure, delamination is a prime concern. Through-thickness stitching has been shown to be a relatively simple method of improving resistance to delamination. In this paper, monofilament and multifilament fibres of a similar overall diameter were characterised and their properties compared for their suitability as stitching yarns. Dissimilar to other published works which rely on commercially available materials, such as polyparaphenylene terephthalamide, criteria were produced on the required properties and two potentially promising polymers were selected for extrusion. It was found that although the multifilament fibres had a greater ultimate tensile strength, they began to yield at a lower force than their monofilament equivalent.

Item Type:Journal article
Keywords:extrusion; thermoplastics; stitching
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Engineering Composites
ID Code:39110
Deposited By: Dr Edward Archer
Deposited On:08 Jan 2018 11:26
Last Modified:08 Jan 2018 11:26

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