Understanding the ultra-high-temperature mechanical behaviors of advanced two-dimensional carbon-carbon composites
Understanding the ultra-high-temperature mechanical behaviors of advanced two-dimensional carbon-carbon composites
复制标题
了解先进二维碳-碳复合材料的超高温机械行为
DOI:
10.1016/j.ceramint.2020.05.237
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发表时间:
2020-09
影响因子:
5.2
通讯作者:
Tianbao Cheng
中科院分区:
文献类型:
--
作者:
Tianbao Cheng
Advanced carbon-carbon composites (C/Cs) are tailored materials exhibiting properties designed to fit the end demands. However, as a kind of fiber reinforced materials, C/Cs have complex internal structures and various manufacturing defects which evolve with temperature. In addition, the micro-nano structures of the carbon fiber reinforcements and graphite matrix are susceptible to the thermal and graphitizing treatments. All these result in the complicated mechanical behaviors of C/Cs. Several experimental studies have been reported, but the mechanical parameters coupled together cannot be separated. Thus, the mechanical behaviors of C/Cs have yet been well understood. In the present work, theoretical models for the coefficient of thermal expansion, Young's modulus, and tensile strength of 2D C/Cs are established based on the mechanical mechanisms revealed in the ultra-high-temperature experiments. The mechanical behaviors of 2D plain-weave PAN based C/Cs at elevated temperatures are then studied. The factors contributing to the mechanical behaviors are separated and characterized quantitatively.
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影响因子:
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作者:
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通讯作者:
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影响因子:
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通讯作者:
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发表时间:
2003-12-01
影响因子:
3.9
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通讯作者:
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