传感技术学报2013，Vol.26Issue(1)：138-142,5.DOI:10.3969/j.issn.1004-1699.2013.01.028
基于PVDF传感器和工作曲率变形实现裂纹梁裂纹检测
Crack Detection for Beam Structures Based on Operating Curvature Deflection Shape Using PVDF Sensors
摘要
Abstract
With an example of a clamped-free cracked beam, a decision method for structural damage detection based on operating curvature deflection shape, which is measured by a piezoelectric polymer ( polyvinylidene fluoride,PVDF)film as sensor mounted onto the structure surface is presented in this paper. First, the theory of damage detection based on operating curvature deflection is introduced. And then the operating deflection shapes and damage index are direct determined from the frequency response functions of the damaged structures by using PVDF film as sensor. Final, the experimental woks for one and two-cracked aluminum beam were performed to verify the proposed method. The successful detection of cracks in the beam demonstrates that the proposed method can be used efficiently in damage identification and health monitoring of beam-type structures. The main advantage of the proposed method is without need of the health structures vibration information.关键词
损伤检测/工作曲率变形/PVDF传感器/频率响应函数Key words
damage detection/operating curvature deflection shape/PVDF sensor/frequency response function分类
通用工业技术引用本文复制引用
聂彦平,毛崎波,张炜..基于PVDF传感器和工作曲率变形实现裂纹梁裂纹检测[J].传感技术学报,2013,26(1):138-142,5.基金项目
国家自然基金项目(51265037) （51265037）
第44批教育部留学回国人员科研启动基金项目 （）
航空科学基金资助项目(BA201106350) （BA201106350）
南昌航空大学科研启动基金(EA20106211) （EA20106211）
江西省高等学校科技落地项目(KJLD12075) （KJLD12075）
