Transversal friction of epoxy-lubricated and dry carbon tows: From initial stages to stabilised state
| Autor: | Noël Brunetière, Olga Smerdova, Omar Benchekroun |
|---|---|
| Přispěvatelé: | Institut Pprime (PPRIME), ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers |
| Rok vydání: | 2021 |
| Předmět: |
Friction coefficient
Materials science Friction Deformation (mechanics) Carbon fibers 02 engineering and technology Epoxy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Transverse plane Mechanics of Materials visual_art Lubrication [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Tow Ceramics and Composites visual_art.visual_art_medium Stress relaxation Relaxation (physics) Composite material 0210 nano-technology Internal stress Carbon Fibre |
| Zdroj: | Composites Part A: Applied Science and Manufacturing Composites Part A: Applied Science and Manufacturing, Elsevier, 2021, 143, pp.106263. ⟨10.1016/j.compositesa.2020.106263⟩ |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2020.106263 |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
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