Extruded Monofilament and Multifilament Thermoplastic Stitching Yarns

Research output: Contribution to journalArticle

Abstract

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.
LanguageEnglish
Number of pages17
JournalFibres
Volume5
Issue number45
DOIs
Publication statusPublished - 5 Dec 2017

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Delamination
Thermoplastics
Yarn
Fibers
Aerospace industry
Polymers
Metals
Automotive industry
Carbon fibers
Laminates
Extrusion
Tensile strength
Composite materials

Keywords

  • extrusion
  • thermoplastics
  • stitching

Cite this

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title = "Extruded Monofilament and Multifilament Thermoplastic Stitching Yarns",
abstract = "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.",
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Extruded Monofilament and Multifilament Thermoplastic Stitching Yarns. / McGarrigle, Cormac; Rodgers, I; McIlhagger, Alistair; Harkin-Jones, Eileen; Major, I; Devine, D; Archer, Edward.

In: Fibres, Vol. 5, No. 45 , 05.12.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Extruded Monofilament and Multifilament Thermoplastic Stitching Yarns

AU - McGarrigle, Cormac

AU - Rodgers, I

AU - McIlhagger, Alistair

AU - Harkin-Jones, Eileen

AU - Major, I

AU - Devine, D

AU - Archer, Edward

PY - 2017/12/5

Y1 - 2017/12/5

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AB - 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.

KW - extrusion

KW - thermoplastics

KW - stitching

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