摘要
通过实验模拟压电传感器阵列在工作中易出现的传感元件破裂和脱粘损伤,探究传感元件损伤和脱粘对阵列式压电模态传感器输出的影响。在固支梁表面均匀布置一组圆形的锆钛酸铅压电陶瓷(PZT)片,将实验曲率模态作为加权系数设计阵列式压电模态传感器。对比研究模态传感器的输出在传感元件损伤前后的变化。实验结果表明:当不同位置的PZT出现不同程度的破裂时,阵列式压电模态传感器仍有很好的滤波效果;而当传感元件脱粘时,某些阶的模态传感器无法正常工作,这与传感元件的脱粘程度以及脱粘位置有关。
Sensor component crack and debonding may occur in the operation of the piezoelectric sensor array.Effect of piezoceramics crack or debonding on output of modal sensor are experimentally discussed.A group of circular Pb-based zirconate titanates(PZT)piezoceramics patches is uniformly arranged on the surface of the clamped beam,and the experimental curvature mode is used as weighting coefficients to design piezoelectric array modal sensor.The changes of the signal of the modal sensor before and after the sensor component being damaged are compared.The experimental results show that when the PZT sensor at any position has different degrees of crack,the array piezoelectric modal sensor can still perform modal filtering,but when the sensor component is debonded,the modal sensors cannot filter the corresponding mode,which is associated with the debonding degree and debonding position of the sensor component.
作者
王渊德
毛崎波
黄仕卓
WANG Yuande;MAO Qibo;HUANG Shizhuo(School of Aircraft Engineering,Nanchang Hangkong University,Nanchang 330063,China)
出处
《传感器与微系统》
CSCD
北大核心
2023年第1期59-63,共5页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(51975266)
江西省自然科学基金资助项目(20192BAB206024)
江西省研究生创新专项资金项目(YC2019-S343)。
关键词
模态传感器
锆钛酸铅
传感元件损伤
脱粘
modal sensor
Pb-based zirconate titanates(PZT)
sensitive component damage
debonding
