Novel high performance auxetic fibrous structures for composite reinforcement

C. Goncalves, R. Magalhaes, S. Rana, R. Fangueiro, J. Nunes, G. Dias

Research output: Contribution to journalConference article

Abstract

This paper reports the development of novel auxetic fibrous structures from high performance yarns using knitting technology for application as reinforcement in composites. Two types of high performance yarns, namely, para-aramid (p-AR) and polyamide 6.6 (PA), were used to produce three distinct auxetic structures: purl, re-entrant lozenge and re-entrant star structures. It was observed that all structures produced could achieve maximum negative Poisson's ratios (NPR) of -0.60, -0.54 and -0.47 in the course direction of purl and lozenge and in wale direction of star structures, respectively. The auxetic textile structures also presented better tensile strength and energy absorption (except re-entrant lozenge structure) than plain knitted textiles produced by using the same type of fibres and parameters.

Original languageEnglish
Article number012046
Number of pages8
JournalIOP Conference Series: Materials Science and Engineering
Volume406
Issue number1
Early online date21 Sep 2018
DOIs
Publication statusPublished - 21 Sep 2018
Externally publishedYes
Event13th International Conference on Textile Composites - Milan, Italy
Duration: 17 Sep 201819 Sep 2018
Conference number: 13

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Stars
Yarn
Textiles
Reinforcement
Nylons
Composite materials
Energy absorption
Poisson ratio
Polyamides
Tensile strength
Fibers
Direction compound

Cite this

Goncalves, C. ; Magalhaes, R. ; Rana, S. ; Fangueiro, R. ; Nunes, J. ; Dias, G. / Novel high performance auxetic fibrous structures for composite reinforcement. In: IOP Conference Series: Materials Science and Engineering. 2018 ; Vol. 406, No. 1.
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Novel high performance auxetic fibrous structures for composite reinforcement. / Goncalves, C.; Magalhaes, R.; Rana, S.; Fangueiro, R.; Nunes, J.; Dias, G.

In: IOP Conference Series: Materials Science and Engineering, Vol. 406, No. 1, 012046, 21.09.2018.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Novel high performance auxetic fibrous structures for composite reinforcement

AU - Goncalves, C.

AU - Magalhaes, R.

AU - Rana, S.

AU - Fangueiro, R.

AU - Nunes, J.

AU - Dias, G.

PY - 2018/9/21

Y1 - 2018/9/21

N2 - This paper reports the development of novel auxetic fibrous structures from high performance yarns using knitting technology for application as reinforcement in composites. Two types of high performance yarns, namely, para-aramid (p-AR) and polyamide 6.6 (PA), were used to produce three distinct auxetic structures: purl, re-entrant lozenge and re-entrant star structures. It was observed that all structures produced could achieve maximum negative Poisson's ratios (NPR) of -0.60, -0.54 and -0.47 in the course direction of purl and lozenge and in wale direction of star structures, respectively. The auxetic textile structures also presented better tensile strength and energy absorption (except re-entrant lozenge structure) than plain knitted textiles produced by using the same type of fibres and parameters.

AB - This paper reports the development of novel auxetic fibrous structures from high performance yarns using knitting technology for application as reinforcement in composites. Two types of high performance yarns, namely, para-aramid (p-AR) and polyamide 6.6 (PA), were used to produce three distinct auxetic structures: purl, re-entrant lozenge and re-entrant star structures. It was observed that all structures produced could achieve maximum negative Poisson's ratios (NPR) of -0.60, -0.54 and -0.47 in the course direction of purl and lozenge and in wale direction of star structures, respectively. The auxetic textile structures also presented better tensile strength and energy absorption (except re-entrant lozenge structure) than plain knitted textiles produced by using the same type of fibres and parameters.

KW - poisson ratio

KW - metamaterials

KW - auxetic cellular

KW - reinforcement

KW - stars

KW - tensile strength

KW - yarn

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M3 - Conference article

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