基于植入式压电阻抗技术的混凝土梁损伤识别  

Damage detection of concrete beams through electromechanical impedance technology using embedded PZT transducers

作　　者：余王景 朱宏平[1,2] 

机构地区：[1]华中科技大学土木工程与力学学院,湖北武汉430074 [2]华中科技大学控制结构湖北省重点实验室,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2011年第4期124-128,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50778077);国家杰出青年科学基金资助项目(50925828)

摘　　要：基于压电阻抗技术,对内植单个PZT传感器的混凝土梁进行建模,模拟其在无损、发生损伤、不同损伤程度的各种工况下的损伤识别过程.随后采用分布式多个内植PZT传感器确定损伤梁中裂纹的大致位置.结果表明:运用植入式PZT传感器能有效地识别混凝土梁中损伤的发生、损伤程度和损伤位置.On the basis of electromechanical impedance method, damage detection was implemented on the finite element models of concrete beams with a single embedded PbZrO3-PbTiO3 （PZT） ceramic transducer under various conditions. Then the damage location diagnosis of a cracked beam was simulated using distributed multiple PZT transducers. Results show that the proposed method using embedded PZT transducers is effective in identifying the existence, severity and location of cracks in concrete beams and has great potential in structural health monitoring field

关 键 词：混凝土 健康监测 损伤检测 压电阻抗 植入式PZT传感器 损伤指标 

分 类 号：TU312[建筑科学—结构工程]