航空学报 > 2007, Vol. 28 Issue (4): 869-873

三维五向碳/酚醛编织复合材料的拉伸性能及破坏机理

李仲平1,3,卢子兴2,冯志海3,李典森2   

  1. 1北京航空航天大学 材料科学与工程学院  2北京航空航天大学 航空科学与工程学院 3航天材料工艺研究所
  • 收稿日期:2006-05-25 修回日期:2006-11-06 出版日期:2007-07-10 发布日期:2007-07-10
  • 通讯作者: 卢子兴2

Investigation of the Tensile Properties and Failure Mechanism of Integrallybraided 5D Carbon/Phenolic Composites

LI Zhong-ping1,3,LU Zi-xing2,FENG Zhi-hai3,LI Dian-sen2   

  1. 1School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics 2School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics 3Institute of Space Material Technology
  • Received:2006-05-25 Revised:2006-11-06 Online:2007-07-10 Published:2007-07-10
  • Contact: LU Zixing2

摘要:

对不同编织角、不同体积含量的三维五向碳/酚醛编织复合材料进行了纵向(编织方向)拉伸实验和横向拉伸的对比实验,获得了这些编织复合材料的主要拉伸力学性能。实验后对拉伸试件的断口进行了照相和扫描电镜观察,分析了材料的变形及其破坏机理。实验结果表明: 编织角仍是影响三维五向编织复合材料拉伸力学性能的主要因素,并且复合工艺的质量对复合材料的力学性能有重要影响。此外,发现三维五向碳/酚醛编织复合材料的横向拉伸与纵向拉伸具有完全不同的破坏机制。

关键词: 三维五向编织复合材料, 拉伸性能, 破坏机理, 碳/酚醛

Abstract:

Longitudinal (braiding direction) tensile tests were performed for integrally braided 5D carbon/phenolic composites with different braiding angles and fiber volume fractions, and transverse tensile tests were also done for comparison.The main mechanical properties were obtained.After the test, fracture morphology and microstructure observation were performed to further understand the deformation and the failure mechanism.

Key words: integrallybraided , 5D , composite,  , tensile , property,  , failure , mechanism,  , carbon/phenolic

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