基于FBG传感的CFRP层合板低速冲击响应监测  

Monitoring of CFRP Laninate under Low Velocity Impact Based on FBG Sensors

作　　者：胡业发[1] 王彬[1] 张锦光[1] 宋春生 徐仕伟[1] HU Yefa;WANG Bin;ZHANG Jinguang;SONG Chunsheng;XU Shiwei(The Shanghai Institute of Technical Physics of the Chinese Academy of Sciences,Shanghai 200083,China;School of Physical Science,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430070

出　　处：《郑州大学学报（工学版）》2018年第3期82-86,共5页Journal of Zhengzhou University（Engineering Science）

基　　金：湖北省重大科技创新计划项目(2014AAA005);国家自然科学基金资助项目(U1537103)

摘　　要：运用有限元分析软件ABAQUS对碳纤维复合材料(CFRP)层合板在低速冲击作用下的响应进行了模拟,发现了冲击过程中随着冲击能量的增大,层内最大应力随之增大的现象.实验利用光纤光栅(FBG)传感器受到应力作用后光栅中心波长随应力增大而增大的特性,对埋有FBG传感器的CFRP层合板进行低速冲击响应监测实验,并对解调仪采集的中心波长值进行分析,得到冲击能量与中心波长偏移峰值的关系.实验结果表明:埋有CFRP层合板中的FBG传感器能准确捕捉到瞬间冲击信号,并且FBG传感器中心波长偏移峰值能反映冲击能量的大小,随着冲击能量增大,中心波长偏移峰值增大,层内最大应力也随之增大.In this paper,ABAQUS was used to simulate the response of carbon fiber composite laminates under low velocity impact. It was found that with the increase of the impact energy,the maximum stress of each layer increased. By using the characteristic that the center wavelengths of FBG sensors in composite material structure were determined by stress,the experiment used the embedded FBG sensors to monitor the response of low velocity impact. By analyzing the center wavelength captured by optic fiber grating demodulator,the relationship between the impact energy and the peak wavelength shift of sensors was found. Experimental results showed that,the embedded FBG sensors were able to accurately capture the transient impact signal and the peak wavelength shift of sensors could determine the size of the impact energy. With the increase of the impact energy,the peak wavelength shift increases as well as the maximum stress of layer.

关 键 词：CFRP层合板 低速冲击响应 FBG传感器 有限元分析 冲击能量 

分 类 号：TH145[一般工业技术—材料科学与工程]