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首页> 外文会议>Mechanical properties and performance of engineering ceramics and composites VII >MECHANICAL AND M1CROSTRUCTURAL CHARACTERIZATION OF C/C-SIC MANUFACTURED VIA TR1AXIAL AND BIAXIAL BRAIDED FIBER PREFORMS
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MECHANICAL AND M1CROSTRUCTURAL CHARACTERIZATION OF C/C-SIC MANUFACTURED VIA TR1AXIAL AND BIAXIAL BRAIDED FIBER PREFORMS

机译：通过轴向和双向编织纤维预成型件制造的C / C-SIC的力学和微观结构表征

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摘要

Carbon-carbon silicon carbide (C/C-SiC) composite plates were manufactured based on triaxial and biaxial braided fiber preforms. The liquid silicon infiltration (LSI) method was used to achieve the SiC matrix. In a first processing step intermediate modulus carbon fiber (T800 12k) preforms were manufactured via braiding technique in ±45° and ±75° fiber orientation and an optional 0° orientation. In the next step the fiber preforms were processed to carbon fiber reinforced plastics (CFRP) by warm pressing (using phenolic resin) and by resin transfer molding (RTM, using aromatic resin), respectively. The CFRP have a fiber volume content of about 60 percent. The main objective of this work was to investigate the mechanical properties under tensile and bending mode at room temperature depending on fiber orientation and processing route. The change in fiber orientation as well as the influence of triaxial fiber preforms in contrast to biaxial fiber performs will be discussed. The use of different CFRP process techniques resulted in different final matrix structures and therefore in different microstructures of the resulting C/C-SiC composites which will be compared based on CT and SEM analysis.
机译：碳-碳碳化硅（C / C-SiC）复合板是基于三轴和双轴编织纤维预成型件制造的。液体硅渗透（LSI）方法用于获得SiC基体。在第一个加工步骤中，通过编织技术以±45°和±75°纤维取向以及可选的0°取向制造中模量碳纤维（T800 12k）预成型坯。在下一步中，分别通过热压（使用酚醛树脂）和树脂传递模塑（RTM，使用芳族树脂）将纤维预成型件加工为碳纤维增强塑料（CFRP）。 CFRP的纤维体积含量约为60％。这项工作的主要目的是研究室温下拉伸和弯曲模式下的机械性能，具体取决于纤维的取向和加工路线。与双轴纤维性能相比，将讨论纤维取向的变化以及三轴纤维预成型坯的影响。使用不同的CFRP工艺技术会导致最终的基质结构不同，因此最终的C / C-SiC复合材料的微观结构也会有所不同，将根据CT和SEM分析进行比较。

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  • 会议地点 Daytona Beach FL(US);Daytona Beach FL(US);Daytona Beach FL(US)
  • 作者

    Fabian Breede; Martin Friess; Raouf Jemmali; Dietmar Koch; Heinz Voggenreiter; Virginia Frenzel; Klaus Drechsler;

  • 作者单位

    Department of Ceramic Composites and Structures Institute of Structures and Design German Aerospace Center (DLR) Stuttgart, Germany;

    Department of Ceramic Composites and Structures Institute of Structures and Design German Aerospace Center (DLR) Stuttgart, Germany;

    Department of Ceramic Composites and Structures Institute of Structures and Design German Aerospace Center (DLR) Stuttgart, Germany;

    Department of Ceramic Composites and Structures Institute of Structures and Design German Aerospace Center (DLR) Stuttgart, Germany;

    Department of Ceramic Composites and Structures Institute of Structures and Design German Aerospace Center (DLR) Stuttgart, Germany;

    Institute of Aircraft Design, University of Stuttgart Stuttgart, Germany;

    Institute of Aircraft Design, University of Stuttgart Stuttgart, Germany;

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