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首页> 外文期刊>Composite Structures >Description of thermal protection against heat transfer of carbon fiber reinforced plastics (CFRP) coated by stiffened ceramic mat (TBC)
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Description of thermal protection against heat transfer of carbon fiber reinforced plastics (CFRP) coated by stiffened ceramic mat (TBC)

机译：热硬化防止陶瓷涂层（TBC）涂层的碳纤维增强塑料（CFRP）传热的说明

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摘要

Application of ceramic mat as thermal protection (TBCs) has the main disadvantage-low erosion resistance and very low mechanical strength against high-velocity gases and impacts by foreign particles. The paper presents new results for CFRP/TBC build up of stiffened ceramic mat using silicate compound rigidiser in order to seal the surface and protect against heat transfer and mechanical loads.Experimental samples of CFRP/TBC systems were subjected to heat transfer and damage during the point-concentrated thermal shock introduced by gas burner flame up to 850 degrees C for different time exposures. Then samples were subjected to 3-PB tests to assess damage state after thermal shock.In numerical analysis two FEM models were elaborated. The first one concerns the heat transfer across the RVE (representative volume element) of the CFRP/TBC structure. The second one describes bending of the beam including damage and cracking in the stiffened ceramic mat and delamination of the interface CFRP/TBC system. Based on the results of experimental research, the newly formulated numerical model allowed for efficient calculation of the CFRP substrate effort against the heat transfer due to thermal shocks and gradual damage development in the TBC layer up to the final failure, preceded by delamination of the CFRP/TBC system.
机译：陶瓷垫用作热保护（TBC）的主要缺点是：耐腐蚀性低，对高速气体和异物冲击的机械强度非常低。本文介绍了使用硅酸盐复合硬化剂加固陶瓷垫层的CFRP / TBC的新结果，以密封表面并防止传热和机械载荷。燃气燃烧器火焰在高达850摄氏度的不同暴露时间下引入的点集中热冲击。然后对样品进行3-PB测试以评估热冲击后的损伤状态。在数值分析中，阐述了两个FEM模型。第一个涉及跨CFRP / TBC结构的RVE（代表体积元素）的热传递。第二篇描​​述了梁的弯曲，包括在加硬的陶瓷垫中的损坏和破裂以及界面CFRP / TBC系统的分层。根据实验研究的结果，新建立的数值模型可以有效地计算CFRP基材抵抗热冲击和TBC层中逐渐形成的损伤直至最终失效的传热，最后进行CFRP分层/ TBC系统。

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  • 来源
    《Composite Structures》 |2019年第12期|111489.1-111489.9|共9页
  • 作者

    Golewski P.; Sadowski T.;

  • 作者单位

    Lublin Univ Technol Nadbystrzycka 40 PL-20618 Lublin Poland;

  • 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

    Ceramic mat; CFRP; TBC; FEM; RVE;

    机译：磨砂陶瓷;CFRP;TBC;有限元RVE;

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