基于分布式光纤传感技术的CFRP板变形监测研究  

Research on deformation monitoring of CFRP plate using distributed optical fiber sensing technology

作　　者：何建平[1] 沈锋 张世海[3] HE Jian-ping;SHEN Feng;ZHANG Shi-hai(School of Civil Engineering,Dalian University of Technology,Dalian 116024,China;Jiangsu Fiber Composite Co.,Ltd.,Yancheng 224700,China;School of Civil Engineering,Nanyang Institute of Technology,Nanyang 473001,China)

机构地区：[1]大连理工大学土木工程学院,大连116024 [2]江苏飞博尔新材料科技有限公司,盐城224700 [3]南阳理工学院土木工程学院,南阳473001

出　　处：《复合材料科学与工程》2021年第12期48-52,共5页Composites Science and Engineering

基　　金：国家自然科学基金项目(61875027,61675102);中央高校基本科研业务费项目(DUT20LAB140)。

摘　　要：碳纤维增强复合材料(CFRP)具有优良的抗拉强度和耐腐蚀性,被广泛应用于支护和加固结构中。为研究碳纤维复合材料使用过程中的变形特性,在CFRP板上布设分布式光纤传感器,开展CFRP板有损和无损两个工况下的变形监测试验,并在CFRP板上布设电阻应变片进行应变测试对比。试验结果表明:分布式光纤传感器能够有效测量CFRP板各处的应变信息,测量应变与有限元分析值、电阻应变片测量值基本吻合,分布式光纤传感器连续布设比定点布设更能真实反映CFRP板变形。Carbon fiber reinforced polymer(CFRP)has been widely used in supporting and strengthening structures due to its excellent tensile strength and corrosion resistance.In order to study the deformation characteristics of CFRP in service,distributed optical fiber sensors were placed on the CFRP plate to carry out deformation monitoring tests of CFRP plate under two working conditions of damage and non damage,and resistance strain gauges were placed on the CFRP plate for strain test comparison.The experimental results show that the distributed optical fiber sensor can effectively measure the strain information of the CFRP plate,and the measured strain is basically consistent with the finite element analysis value and the resistance strain gauge value.The continuous arrangement of the distributed optical fiber sensor is more realistic than the fixed-point arrangement to reflect the deformation of the CFRP plate.

关 键 词：CFRP 分布式光纤传感器 应变 损伤监测 

分 类 号：TB332[一般工业技术—材料科学与工程]