应力作用对电涡流法测试碳纤维复合材料位移的影响机理  

Influence Mechanism of Load on Displacement Measurement of Carbon Fiber Reinforced Composite with Eddy Current Sensor

作　　者：姜磊 王黎明[1] 张小章[3] JIANG Lei;WANG Liming;ZHANG Xiaozhang(Research Institute of Physical and Chemical Engineering of Nuclear Industry, Tianjin 300180, China;Science and Technology on Particle Transport and Separation Laboratory, Tianjin 300180, China;Department of Engineering Physics, Tsinghua University, Beijing 100084, China)

机构地区：[1]核工业理化工程研究院,天津300180 [2]粒子输运与富集技术重点实验室,天津300180 [3]清华大学工程物理系,北京100084

出　　处：《原子能科学技术》2019年第3期518-524,共7页Atomic Energy Science and Technology

基　　金：天津市企业博士后创新项目择优资助计划资助项目(2016)

摘　　要：电涡流法是测试碳纤维复合材料(CFRP, carbon fiber reinforced composite)位移的常用技术。CFRP通常工作在较高应力水平,本研究针对应力作用下电涡流法测试CFRP位移开展了理论与实验研究。建立了应力作用下电涡流传感器测试CFRP位移的理论模型,分析了应力对该测试方法的影响规律。建立了原理性实验测试装置,测试了不同应力水平下电涡流法测试CFRP位移的传感器"输入-输出"曲线,获得了应力水平对传感器灵敏度的影响规律。通过理论与实验结果综合比较分析,证实了理论模型的有效性,并分析了应力对该测试方法的影响机理。Eddy current method is a common technique to measure the displacement of carbon fiber reinforced composite(CFRP). CFRP often works on high level load, and the influence rule of load was studied with both theoretical and experimental methods in this research. The so called equivalent eddy current ring was used to develop the model aiming to simulate the measurement of CFRP displacement by eddy current method. In order to conduct experimental research, an experimental system was built. A kind of thin board, which is unidirectional CFRP, was taken as the specimens. The sensor calculation experiments were conducted for this specimen and the results were compared with numerical simulation results in detail. The validity of the theoretical model was proved. The influence rule of the load was analyzed.

关 键 词：应力 碳纤维复合材料 电涡流 位移测试 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]