Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 65, Issue -, Pages 115-124Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2014.06.002
Keywords
Carbon fibre; Friction; Finite element analysis (FEA); Mechanical testing
Funding
- EPSRC [EP/I033513/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I033513/1] Funding Source: researchfish
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Friction plays an important role in the processing behaviour of fabrics or prepregs into geometries that require significant inter-ply and intra-ply movements. In previous studies, coefficient of friction is generally assumed to be constant. This paper presents a detailed experimental investigation of the frictional behaviour of carbon fibres at meso-scale. The inter-tow angle was found to have a significant effect on the tow friction when the fibres are parallel; whereas the effect of tow size was marginal. A numerical model was developed to investigate inter-filament friction from tow friction using finite element analysis. The filament-to-pulley friction was found to have a significant effect on the overall load-displacement behaviour, unlike the filament-to-filament friction. A range of intra-tow filament-to-filament friction coefficient was also indicated within which the inter-filament slippage began. (C) 2014 Elsevier Ltd. All rights reserved.
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