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Multiscale heat conduction and fractal oxidation behaviors of needle-punched carbon/carbon composites

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journal contribution
posted on 2023-03-16, 11:05 authored by Meng Han, Chuwei Zhu, Vadim SilberschmidtVadim Silberschmidt, Qinsheng Bi
Needle-punched (NP) carbon/carbon composites (CCCs) are widely used in structures re-entering the atmosphere of aerospace, thanks to their excellent mechanical properties. They are easily oxidized at high temperatures with atmospheric oxygen. The oxidation behavior is influenced by the process of heat conduction. In this study, longitudinal and transverse heat conduction in micro- and mesoscale models of CCCs was investigated. It was established that the heat transfer interface of a fiber bundle demonstrated peak-like morphology, while the punching structures of composites slowed down the process of heat conduction. Oxidation behavior of NP CCCs was predicted with a fractional Brownian motion strategy. It was found that the oxidized fiber bundles formed “bamboo shoots” morphology due to different oxidation rates of the matrix and fibers. Stochastic oxidation behavior was successfully described with this fractal strategy.

Funding

National Natural Science Foundation of China [Grant no. 12102152]

State Key Laboratory of Mechanics and Control of Mechanical Structures (Nanjing University of Aeronautics and Astronautics) [Grant no. MCMS-E0221Y02]

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Science and Engineering of Composite Materials

Volume

29

Issue

1

Pages

508 - 515

Publisher

De Gruyter

Version

  • VoR (Version of Record)

Rights holder

© the author(s)

Publisher statement

This work is licensed under the Creative Commons Attribution 4.0 International License

Acceptance date

2022-11-28

Publication date

2022-12-31

Copyright date

2022

ISSN

0792-1233

eISSN

2191-0359

Language

  • en

Depositor

Deposit date: 16 March 2023

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