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High temperature indentation behaviors of carbon fiber composite pyramidal truss structures

机译：碳纤维复合锥体结构的高温压痕行为

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摘要

The composite sandwich panels with pyramidal truss cores were fabricated by the hot-press method. Subsequently, the experimental studies were performed to investigate the quasi-static indentation response of composite sandwich panel at high temperature. The quasi-static indentation tests of composite sandwich panels were conducted at temperatures ranging from 20 degrees C to 200 degrees C. The damage mechanism, load-displacement curves, indentation load and absorbed energies at high temperature were investigated and compared with that at room temperature. The results showed that high temperature induced a change in the failure mechanism and had the significant effect on the load-displacement curves, indentation load and energy absorption. The indentation load and absorbed energies decreased as temperature increased. Especially at 200 degrees C, the reduction in indentation load and absorbed energies was more severe, which was are mainly due to the degradation of matrix properties and fiber-matrix interface properties at higher temperature. (C) 2015 Elsevier Ltd. All rights reserved.
机译：采用热压法制备了具有锥体桁架芯的复合夹芯板。随后，进行了实验研究以研究复合夹芯板在高温下的准静态压痕响应。复合夹芯板的准静态压痕试验是在20摄氏度至200摄氏度的温度范围内进行的。研究了高温下的损伤机理，载荷-位移曲线，压痕载荷和吸收能，并将其与室温下进行了比较。 。结果表明，高温引起破坏机理的改变，对载荷-位移曲线，压痕载荷和能量吸收有显着影响。压痕负荷和吸收的能量随温度升高而降低。尤其是在200摄氏度时，压痕载荷和吸收能的降低更为严重，这主要是由于高温下基体性能和纤维-基质界面性能的下降。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Composite Structures》 |2015年第11期|266-272|共7页
  • 作者

    Liu Jiayi; Qiao Wufeng; Liu Jingxi; Xie De; Zhou Zhengong; Wu Linzhi; Ma Li;

  • 作者单位

    Huazhong Univ Sci & Technol, Sch Naval Architecture & Ocean Engn, Wuhan 430074, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Naval Architecture & Ocean Engn, Wuhan 430074, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Naval Architecture & Ocean Engn, Wuhan 430074, Peoples R China;

    Huazhong Univ Sci & Technol, Sch Naval Architecture & Ocean Engn, Wuhan 430074, Peoples R China;

    Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China;

    Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China;

    Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150001, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Composite sandwich panel; Truss cores; High temperature; Indentation response; Damage mechanism;

    机译：复合材料夹芯板;桁架芯;高温;压痕响应;损伤机理;

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