Impact damage reduction of woven composites subject to pulse current

Yan Li, Fusheng Wang (), Chenguang Huang (), Jianting Ren, Donghong Wang, Jie Kong, Tao Liu and Laohu Long
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Yan Li: Northwestern Polytechnical University
Fusheng Wang: Northwestern Polytechnical University
Chenguang Huang: Northwestern Polytechnical University
Jianting Ren: Northwestern Polytechnical University
Donghong Wang: The 33th Institute of China Electronics Technology Group Corporation
Jie Kong: Northwestern Polytechnical University
Tao Liu: Queen Mary University of London
Laohu Long: State Key Laboratory of Long-Life High Temperature Materials

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract 3D orthogonal woven composites are receiving increasing attention with the ever-growing market of composites. A current challenge for these materials’ development is how to improve their damage tolerance in orthogonal and layer-to-layer structures under extreme loads. In this paper, a damage reduction strategy is proposed by combining structural and electromagnetic properties. An integrated experimental platform is designed combining a power system, a drop-testing machine, and data acquisition devices to investigate the effects of pulse current and impact force on woven composites. Experimental results demonstrate that pulse current can effectively reduce delamination damage and residual deformation. A multi-field coupled damage model is developed to analyze the evolutions of temperature, current and damage. Parallel current-carrying carbon fibers that cause yarns to be transversely compressed enhance the mechanical properties. Moreover, the microcrack formation and extrusion deformation in yarns cause the redistribution of local current among carbon fibers, and its interaction with the self-field produces an obvious anti-impact effect. The obtained results reveal the mechanism of damage reduction and provide a potential approach for improving damage tolerance of these composites.

Date: 2023
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DOI: 10.1038/s41467-023-40752-6

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