摘要
利用搭载低温装置的分离式霍普金森压杆装置,测试三维碳纤维/环氧树脂编织复合材料在温度范围-100~23℃内沿面内方向的冲击压缩性能,分析三维编织复合材料面内压缩刚度、失效应力和比能量吸收在低温环境下随温度的变化规律.结果表明,三维编织复合材料压缩刚度、失效应力以及比能量吸收随温度的下降而升高,其脆性随着温度的下降而增加,在低温环境下面内冲击压缩破坏模式为基体碎裂和增强结构压缩变形.
The impact compressive properties of 3D braided carbon fiber/epoxy composites under the temperature range of - 100-23℃ were tested on a split Hopkinson pressure bar with low temperature device. The compressive stiffness, failure stress and specific energy absorption were obtained to analyze the temperature effect on the compressive properties. The results showed that the compression stiffness, failure stress and specific energy absorption of 3D braided composites increased with the decrease of temperature. Also, it was found that the 3D braided composites became brittle with the decrease of temperature. The results also showed that the resin crack and the braided perform deformation were the main failure modes in the in-plane compression at high strain rates and low temperatures.
出处
《东华大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第6期756-759,共4页
Journal of Donghua University(Natural Science)
基金
上海市科学技术委员会资助项目(12dz1100407)
关键词
三维编织复合材料
低温
冲击压缩性能
3D braided composites
low temperature
impact compressive property
