摘要
为实现三维编织复合材料实时承载监测,基于碳纳米线嵌入三维编织复合材料预制件的方法,研究了嵌入碳纳米线三维编织复合材料制件在三点弯曲试验中碳纳米线的应变特性。结果表明:在三点弯曲过程中,制件加载至断裂碳纳米线的电阻变化具有单调一致性,碳纳米线电阻变化符合一定指数函数关系;在大负荷加载后碳纳米线产生电阻滞后现象;制件卸载后,碳纳米线传感器产生残余电阻。研究结果证明:碳纳米线传感器在弯曲承载下能够实时监测三维编织复合材料结构健康状况,为三维编织复合材料结构健康监测系统的构建提供了参考。
In order to achieve load monitoring of three-dimensional braided composites in real time,the strain characteristics of carbon nanot wires embedded into three-dimensional braided composites in the three point bending test were studied. The method of carbon nano wires embedded into three-dimensional braided composite material preform was applied. The results showed that in the three point bending process,the resistance of carbon nano wires changed with certain exponential function relationship until the specimen was loaded to the fracture. The hysteresis resistance of carbon nano wires was observed after a great loading force. The residual resistance of carbon nano wires was produced after unloading. The studies have shown that structure health status of three-dimensional braided composites can be monitored using carbon nano wires sensor under bending in real-time. It will lay foundation for construction of structural health monitoring system for three-dimensional braided composites.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2016年第1期57-63,共7页
Journal of Textile Research
基金
教育部博士点基金课题项目(200800580004)
关键词
三维编织复合材料
三点弯曲测试
碳纳米线传感器
指数函数
残余电阻
three-dimensional braided composite
three point bending test
carbon nano wires sensor
exponential function
residual resistance
