摘要
针对航空航天碳纤维复合材料结构健康监测需求,研究了飞秒激光逐点直写光纤光栅传感器(fsFBG)和碳纤维复合材料集成时的传感特性。在碳纤维复合材料层合板表面及层间布置fsFBG,对碳纤维复合材料层合板进行静态载荷和低速冲击载荷加载实验,系统分析了表面和不同层间fsFBG对载荷响应的敏感性和差异性,得到了fsFBG中心波长偏移量与加载距离和加载角度的对应关系。实验表明,表面粘贴的fsFBG对动静载荷的敏感度更高,在动静态载荷作用下,fsFBG中心波长偏移量随加载载荷的增大呈线性递增,而随加载距离的增加而逐渐减小;fsFBG具有较好的载荷-方向敏感特性,传感器的响应灵敏度随加载夹角增大逐渐提高。
For meeting the requirements of structural health monitoring of carbon fiber composites in aerospace,the sensing characteristics of femtosecond laser point by point direct writing fiber grating(fsFBG)sensor integrated with carbon fiber composites were studied.In this paper,fsFBG are arranged on the surface and between layers of carbon fiber composite laminates.Static load and low-speed impact load tests are carried out on carbon fiber composite laminates.The sensitivity and difference of fsFBG on the surface and between different layers are systematically analyzed,and the corresponding relationship between the center wavelength shift of fsFBG and the loading distance and loading angle is obtained.The experiment shows that the surface bonded fsFBG is more sensitive to static and dynamic loads.Under static and dynamic loads,the shift of the center wavelength of the fsFBG increases linearly with the increase of the load;It decreases with the increase of loading distance.In addition,fsFBG also has a good load direction sensitivity,and the response sensitivity of the sensor gradually increases with the increase of the loading angle.
作者
常新龙
孙超凡
齐重阳
张有宏
郭一
朱雪蒙
CHANG Xinlong;SUN Chaofan;QI Chongyang;ZHANG Youhong;GUO Yi;ZHU Xuemeng(Missile Engineering College,Rocket Force University of Engineering,Xi’an 710025,China;Shaanxi Interstellar Glory Space Technology Co.,Ltd.,Xi’an 710100,China)
出处
《兵器装备工程学报》
CAS
CSCD
北大核心
2024年第1期208-216,共9页
Journal of Ordnance Equipment Engineering
基金
国防科技基金项目(2019-JCJQ-JJ-107)
陕西省创新能力支撑计划-科技创新团队(2022TD-62)。
关键词
fsFBG
动静态载荷
响应特性
碳纤维复合材料
埋入粘贴
fsFBG sensor
dynamic and static loads
response characteristic
carbon fiber composite
embedding and pasting
