Effects of Fiber Rod Diameters on Tensile Strength of 4D In-Plane C/C Composites

Journal of Propulsion Technology ›› 2013, Vol. 34 ›› Issue (6): 817-821.

• Structure, Strength and Reliablity • Previous Articles Next Articles

Effects of Fiber Rod Diameters on Tensile Strength of 4D In-Plane C/C Composites

College of Astronautics, Northwestern Polytechnical University, Xi’an 710072, China;College of Astronautics, Northwestern Polytechnical University, Xi’an 710072, China;The National Key Laboratory of Combustion/Thermo-Structure and Flow of SRM, The Xi’an Institute of Aerospace Propulsion Technology, Xi’an 710025, China

Published:2021-08-15

纤维棒直径对轴编C/C复合材料拉伸强度的影响

李书良^1,2,侯晓^1,2,史宏斌²

西北工业大学航天学院,陕西西安 710072;西北工业大学航天学院,陕西西安 710072;中国航天科技集团公司第四研究院第四十一所固体火箭发动机燃烧/热结构与内流场国防科技重点实验室,陕西西安 710025

作者简介:李书良(1982—),男,博士生,研究领域为固体火箭发动机结构设计。E-mail:leegoop@126.com
基金资助:
“九七三”项目(61391)。

Abstract

Abstract: In order to study the effects of enforced phase size on the tensile properties of 4D in-plane C/C composite, the change of tensile properties caused by the varied fiber rod diameters was investigated by microstructure observation, meso-mechanics and macro-mechanics experiment. Results show that in the case of keeping the braid parameters, the cracks are increased with the fiber bundles diameters, this results in the decrease of the tensile strength of material. However, the modulus does not have a significant change with the fiber rod diameter varied. 

Key words: Fiber rod; Mechanics properties; 4D in-plane C/C composites; Microstructures

摘要： 为了研究增强相尺度对轴编C/C复合材料拉伸性能的影响,通过对具有不同直径纤维棒的材料微结构的观测,结合材料的细观和宏观力学性能实验,研究了纤维棒直径引起的材料拉伸性能变化。结果表明:在编织参数不变的情况下,纤维棒直径增加,棒内大尺度裂纹增多,降低了材料的拉伸强度,但模量变化不明显。 

关键词: 纤维棒;力学性能;轴编C/C复合材料;微结构 

LI Shu-liang^1,2, HOU Xiao^1,2, SHI Hong-bin². Effects of Fiber Rod Diameters on Tensile Strength of 4D In-Plane C/C Composites[J]. Journal of Propulsion Technology, 2013, 34(6): 817-821.

李书良,侯晓,史宏斌. 纤维棒直径对轴编C/C复合材料拉伸强度的影响[J]. 推进技术, 2013, 34(6): 817-821.

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Effects of Fiber Rod Diameters on Tensile Strength of 4D In-Plane C/C Composites

纤维棒直径对轴编C/C复合材料拉伸强度的影响

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