Functional Composite Materials | |
Multi-material braids for multifunctional laminates: conductive through-thickness reinforcement | |
Caroline O’Keeffe1  Giuliano Allegri1  Dmitry S. Ivanov1  Laura Rhian Pickard1  Ivana K. Partridge1  Juan Cao2  | |
[1] Bristol Composites Institute http://www.bristol.ac.uk/composites/ACCIS), University of Bristol, University Walk, BS8 1TR, Bristol, UK;COMAC Shanghai Aircraft Design & Research Institute, 5188 Jinke Road, Zhangjiang, Shanghai, China; | |
关键词: Tufting; Micro-braiding; Functional composites; Electrical conductivity; | |
DOI : 10.1186/s42252-021-00018-0 | |
来源: Springer | |
【 摘 要 】
Conventional carbon fibre laminates are known to be moderately electrically conductive in-plane, but have a poor through-thickness conductivity. This poses a problem for functionality aspects that are of increasing importance to industry, such as sensing, current collection, inductive/resistive heating, electromagnetic interference (EMI) shielding, etc. This restriction is of course more pronounced for non-conductive composite reinforcements such as glass, organic or natural fibres. Among various solutions to boost through-thickness electrical conductivity, tufting with hybrid micro-braided metal-carbon fibre yarns is one of the most promising. As a well-characterised method of through thickness reinforcement, tufting is easily implementable in a manufacturing environment. The hybridisation of materials in the braid promotes the resilience and integrity of yarns, while integrating metal wires opens up a wide range of multifunctional applications. Many configurations can be produced by varying braid patterns and the constituting yarns/wires. A predictive design tool is therefore necessary to select the right material configuration for the desired functional and structural performance. This paper suggests a fast and robust method for generating finite-element models of the braids, validates the prediction of micro-architecture and electrical conductivity, and demonstrates successful manufacturing of composites enhanced with braided tufts.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO202106293576036ZK.pdf | 2576KB | download |