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Viscoelastically generated prestress from ultra-high molecular weight polyethylene fibres
- Source :
- Journal of Materials Science. 48:5559-5570
- Publication Year :
- 2013
- Publisher :
- Springer Science and Business Media LLC, 2013.
-
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.
- Subjects :
- Ultra-high-molecular-weight polyethylene
Materials science
Flexural modulus
Mechanical Engineering
Composite number
Flexural rigidity
Polyethylene
Viscoelasticity
chemistry.chemical_compound
Creep
chemistry
Mechanics of Materials
Ultimate tensile strength
General Materials Science
Composite material
Subjects
Details
- ISSN :
- 15734803 and 00222461
- Volume :
- 48
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Science
- Accession number :
- edsair.doi.dedup.....b06660a4c7a0062849479f928a16c066