Fabrication process and mechanical properties of C/SiC corrugated core sandwich panel
Fabrication process and mechanical properties of C/SiC corrugated core sandwich panel
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DOI：
10.1016/j.ceramint.2020.09.212
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发表时间：
2020
影响因子：
5.2
通讯作者：
Tao Zeng
中科院分区：
文献类型：
--
作者：
Tengfei Chen;Su Cheng;Laizhen Jin;Tengteng Xu;Tao Zeng
Carbon fiber reinforced SiC composite is a kind of promising high-temperature thermal protection structural .material owing to the excellent oxidative resistance and superior mechanical properties at high temperatures. In .this work, a novel design and fabrication process of lightweight C/SiC corrugated core sandwich panel will be .proposed. The compressive and three-point bending of the C/SiC corrugated sandwich panels are conducted by .experiment and numerical simulation. The relative density of as-prepared C/SiC sandwich panel and the density .composite material are 1.1 and 2.1 g/cm3., respectively. As the density of the C/SiC sandwich panel is only 52.3% .of the bulk C/SiC, suggesting that lightweight characteristic is realized. Moreover, the C/SiC sandwich panel .manifests itself as linear-elastic behavior before failure in compression and the strength is as high as 15.1 MPa. .The failure mode is governed by the core shear failure and panel interlayer cracking. The load capacity under the .three-point bending C/SiC composite sandwich panel is 1947.0 N. The main failure behavior is core shear failure. .The stress distribution under the compression and three-point bend was simulated by FE analysis, and the results .of numerical simulations are in accordance with the experimental results.
