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

被引：2

作者：

Han, Meng ^{[1
]}

Zhou, Chuwei ^{[2
]}

Silberschmidt, Vadim V. ^{[3
]}

Bi, Qinsheng ^{[1
]}

机构：

[1] Jiangsu Univ, Fac Civil Engn & Mech, Dept Mech & Engn Sci, Zhenjiang 212013, Peoples R China

[2] Nanjing Univ Aeronaut & Astronaut, Res Inst Mech Struct Strength, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Peoples R China

[3] Loughborough Univ, Res Inst Mech Adv Mat, Wolfson Sch Mech Elect & Mfg Engn, Loughborough E11 3TU, Leicestershire, England

来源：

SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS | 2022年 / 29卷 / 01期

基金：

中国国家自然科学基金;

关键词：

heat conduction; fractal strategy; oxidation behavior; carbon; carbon composite; STOCHASTIC DIFFERENTIAL-EQUATIONS; CHEBYSHEV CARDINAL WAVELETS; CARBON-CARBON COMPOSITES; ABLATION; MICROSTRUCTURES; MECHANISMS; KINETICS;

D O I：

10.1515/secm-2022-0174

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

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.

引用

页码：508 / 515

页数：8

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