基于多层石墨烯薄膜的柔性传感器研究  

Research of Flexible Sensors Based on Multilayer Graphene Films

作　　者：李正农[1,2] 肖康博 任志刚 LI Zhengnong;XIAO Kangbo;REN Zhigang(College of Civil Engineering,Hunan University;Sanya Science and Education Innovation Park of Wuhan University of Technology)

机构地区：[1]湖南大学土木工程学院 [2]武汉理工大学三亚科教创新园

出　　处：《仪表技术与传感器》2024年第6期1-7,65,共8页Instrument Technique and Sensor

基　　金：海南省科技计划三亚崖州湾科技城联合项目(2021CXLH0024);武汉理工大学三亚科教园开放基金(2001KF007)。

摘　　要：为了在结构监测领域探索新型的传感材料和技术,对一种以多层石墨烯薄膜作为敏感材料的柔性传感器展开了研究,进行结构应变和冲击力信号监测。基于相似三角形的性质,设计了柔性传感器大应变范围内的标定实验,并通过悬臂钢梁实验对柔性传感器和电阻应变片的应变监测结果进行了比较。此外,还搭建了沙粒冲击实验平台,实现了沙粒在不同下落高度的冲击响应。实验结果表明:柔性传感器具有大变形的监测能力,可代替电阻应变片测量结构的应变,并可用于沙粒冲击力的测量,在结构监测领域具有广泛的应用前景。In order to explore new sensing materials and technologies in the field of structural monitoring,a flexible sensor with multilayer graphene film as a sensitive material was studied to sense the strain and impact force signals of structures.Based on the properties of similar triangles,a calibration experiment in the large strain range of the flexible sensor was designed,and the strain monitoring results of the flexible sensor and the resistance strain gauge were compared through the cantilever steel beam ex-periment.In addition,a sand impact test platform was built to realize impact response to different falling heights of sand.The ex-perimental results show that the flexible sensor has the ability of monitoring large deformation,can replace the resistance strain gauge to measure the structural strain,and can be used to measure the impact force of sand particles,and has a wide application prospect in the field of structural monitoring.

关 键 词：石墨烯薄膜 传感器标定 应变监测 沙粒冲击力 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]