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Transversal friction of epoxy-lubricated and dry carbon tows: From initial stages to stabilised state

Abstract : An experiment was designed and carried out to study the friction and deformation of carbon fibre tow under sliding transverse to the orientation of the fibres. A continuous frictional force was measured in reciprocal sliding tests over a sliding length of about one width of the tow, using incremental tests of 4 mm of sliding with a stop after each millimetre to measure the topography of the tow in contact with a glass plate. Although the friction coefficient depended on the initial state of the tow in the first millimetres of sliding, this effect tended to disappear with sliding distance under both dry and epoxylubricated conditions. Four stages of friction were identified and related to their underlying mechanisms: internal stress relaxation, shear deformation of the tow and microslips at the interfaces, macroslip of the external interfaces, and force relaxation after the end of glass sliding.
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Submitted on : Wednesday, October 13, 2021 - 12:23:42 PM
Last modification on : Wednesday, October 20, 2021 - 3:22:17 AM

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Olga Smerdova, Omar Benchekroun, Noel Brunetiere. Transversal friction of epoxy-lubricated and dry carbon tows: From initial stages to stabilised state. Composites Part A: Applied Science and Manufacturing, Elsevier, 2021, 143, pp.106263. ⟨10.1016/j.compositesa.2020.106263⟩. ⟨hal-03376152⟩

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