Materials World Network: Multi-Scale Study of Chemical Vapor Infiltrated Carbon/Carbon Composites

材料世界网络：化学气相渗透碳/碳复合材料的多尺度研究

• 批准号: 74770709
• 负责人: Professor Dr.-Ing. Thomas Böhlke
• 金额: --
• 依托单位: Bereich Kontinuumsmechanik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/74770709?language=en
• 关键词: Materials; World; Network; Multi; Scale

The main goal is to enhance fundamental understanding of the interaction between complex hierarchchical microstructure and the mechanical behavior of carbon/carbon composites. To achieve this goal a combination of chemical engineering, non-destructive testing and characterization (polarized light microscopy, electron microscopy combined with selected area electron diffraction, micro-computed tomography, and atomic force microscopy) methods, and computational mechanics will be used. The objectives of this research are (a) to determine how nanotexture and microstructure of carbon/carbon composites is defined by the parameters of chemical vapor infiltration process, (b) develop a multi-scale numerical model relating microstructure on nano-, micro-, and meso-levels to the overall material properties, (c) propose methodology for fabrication of carbon/carbon composites with desirable microstructure and mechanical properties, (d) verify the approach by manufacturing the material under the prescribed conditions and performing microstructure characterization and mechanical testing, and (e) investigate stress concentrations and fracture induced by nanotexture of pyrolytic carbon and by thermal treatment of the composite.

主要目标是增强对复杂层次微观结构与碳/碳复合材料机械行为之间相互作用的基本理解。为了实现这一目标，将结合使用化学工程、无损检测和表征（偏光显微镜、电子显微镜与选区电子衍射、微型计算机断层扫描和原子力显微镜）方法以及计算力学。本研究的目标是（a）确定碳/碳复合材料的纳米纹理和微观结构如何由化学气相渗透过程的参数定义，（b）开发一个多尺度数值模型，将纳米、微米和介观水平的微观结构与整体材料性能联系起来，（c）提出碳/碳复合材料的制造方法 理想的微观结构和机械性能，(d) 通过在规定条件下制造材料并进行微观结构表征和机械测试来验证该方法，(e) 研究热解碳纳米结构和复合材料热处理引起的应力集中和断裂。

项目成果

Homogenization of the elastic properties of pyrolytic carbon based on an image processing technique

基于图像处理技术的热解碳弹性性能均化

• DOI: 10.1002/zamm.201100180
• 期刊: ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik
• 作者: T. Böhlke;T.-A. Langhoff;S. Lin;T. Gross
• 通讯作者: T. Gross

On the ability of nanoindentation to measure anisotropic elastic constants of pyrolytic carbon

• DOI: 10.1002/zamm.201100128
• 发表时间: 2013-05
• 期刊: ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik
• 作者: T. Gross;N. Timoshchuk;I. Tsukrov;R. Piat;B. Reznik

Microstructure characterization of CVI-densified carbon/carbon composites with various fiber distributions

• DOI: 10.1016/j.compscitech.2012.08.009
• 发表时间: 2012-10-12
• 期刊: COMPOSITES SCIENCE AND TECHNOLOGY
• 影响因子: 9.1
• 作者: Dietrich, S.;Gebert, J. -M.;Piat, R.
• 通讯作者: Piat, R.