Viscoelastically generated prestress from ultra-high molecular weight polyethylene fibres
Viscoelastically generated prestress from ultra-high molecular weight polyethylene fibres
The viscoelastic characteristics of ultra-high molecular weight polyethylene (UHMWPE) fibres are investigated, in terms of creep-induced recovery strain and force output, to evaluate their potential for producing a novel form of prestressed composite. Composite production involves subjecting fibres to tensile creep, the applied load being removed before moulding the fibres into a resin matrix. After matrix curing, the viscoelastically strained fibres impart compressive stresses to the surrounding matrix, to produce a viscoelastically prestressed polymeric matrix composite (VPPMC). Previous research has demonstrated that nylon fibre-based VPPMCs can improve mechanical properties without needing to increase mass or section dimensions. The viability of UHMWPE fibre-based VPPMCs is demonstrated through flexural stiffness tests. Compared with control (unstressed) counterparts, these VPPMCs typically show increases of 20–40 % in flexural modulus. Studies on the viscoelastic characteristics indicate that these fibres can release mechanical energy over a long-timescale and fibre core–skin interactions may have an important role.
5559-5570
Fazal, A.
926d3b48-d11b-45b1-b922-5c2e8e3ba5fd
Fancey, K.S.
302c38ff-a2df-4dce-bac0-ab094e8d689e
August 2013
Fazal, A.
926d3b48-d11b-45b1-b922-5c2e8e3ba5fd
Fancey, K.S.
302c38ff-a2df-4dce-bac0-ab094e8d689e
Fazal, A. and Fancey, K.S.
(2013)
Viscoelastically generated prestress from ultra-high molecular weight polyethylene fibres.
Journal of Materials Science, 48 (16), .
(doi:10.1007/s10853-013-7350-5).
Abstract
The viscoelastic characteristics of ultra-high molecular weight polyethylene (UHMWPE) fibres are investigated, in terms of creep-induced recovery strain and force output, to evaluate their potential for producing a novel form of prestressed composite. Composite production involves subjecting fibres to tensile creep, the applied load being removed before moulding the fibres into a resin matrix. After matrix curing, the viscoelastically strained fibres impart compressive stresses to the surrounding matrix, to produce a viscoelastically prestressed polymeric matrix composite (VPPMC). Previous research has demonstrated that nylon fibre-based VPPMCs can improve mechanical properties without needing to increase mass or section dimensions. The viability of UHMWPE fibre-based VPPMCs is demonstrated through flexural stiffness tests. Compared with control (unstressed) counterparts, these VPPMCs typically show increases of 20–40 % in flexural modulus. Studies on the viscoelastic characteristics indicate that these fibres can release mechanical energy over a long-timescale and fibre core–skin interactions may have an important role.
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Accepted/In Press date: 25 March 2013
e-pub ahead of print date: 6 April 2013
Published date: August 2013
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EEE
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Local EPrints ID: 381441
URI: http://eprints.soton.ac.uk/id/eprint/381441
ISSN: 0022-2461
PURE UUID: 77b13e1b-6dcd-4979-a160-afb1ce6cf26e
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Date deposited: 06 Oct 2015 13:35
Last modified: 14 Mar 2024 21:15
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Author:
A. Fazal
Author:
K.S. Fancey
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