摘要
提出一种基于压电陶瓷激励与传感技术的钢管混凝土柱界面粘结缺陷检测方法。将嵌入式压电功能元和粘贴在钢管外壁的压电陶瓷片分别作为驱动器和传感器,比较不同频率简谐信号下传感器测量幅值,发现界面剥离区域传感器测量信号幅值明显小于无剥离区域传感器信号幅值,探讨了不同激励频率下所定义的损伤指标的变化。
In this study,a PZT-based interface debonding defect detection approach for concrete-filled steel tubular（CFST）column section is proposed and validated experimentally.The embedded piezo-based functional elements（EPFEs）and piezoelectric ceramic（PZT）patches bonded on the outer surface of the steel tubular are used as the actuator and sensor respectively.Based on the amplitude of the measurement of the PZT patches under the sinusoidal excitations with different frequencies,the interface debonding defects are detected successfully by comparing the amplitude of the measurement.The defined damage index change with the different excitation frequencies is investigated.
出处
《压电与声光》
CAS
CSCD
北大核心
2016年第1期166-169,173,共5页
Piezoelectrics & Acoustooptics
基金
国家科技合作与交流专项基金资助项目(2014DFE70230)
高等学校博士学科点专项科研基金资助项目(20120161110023)
关键词
钢管混凝土
界面剥离损伤
压电陶瓷
嵌入式压电功能元
健康监测
应力波传播
损伤监测装
concrete filled steel tube（CFST）
interfacial debonding
piezoelectric ceramic（PZT）
embedded piezobased functional element（EPFE）
structural health monitoring
stress wave propagation
damage detection
