基于压电陶瓷传感器的GFRP损伤检测试验  

Experimenton Damage Detection of GFRP Based on Piezoelectric Ceramic Sensor

作　　者：蔡高洁 胡彬 刘孝禹 李猛 佘艳华[1] CAI Gaojie;HU Bin;LIU Xiaoyu;LI Meng;SHE Yanhua(School of Urban Construction, Yangtze University, Jingzhou 434023, China)

机构地区：[1]长江大学城市建设学院,湖北荆州434023

出　　处：《压电与声光》2021年第2期290-293,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(51408057)。

摘　　要：该文使用外贴法将压电陶瓷传感器固定在玻璃纤维复合材料(GFRP)上进行损伤检测试验,研究了GFRP试件表面裂缝的深度及数量对压电陶瓷传感器接收信号的影响。将主动感应法和基于小波包能量法相结合,做出时域信号图和基于小波包的能量图。分析数据发现,GFRP试件损伤程度越大,传感器接收信号的电压值越小,信号的能量越小。试验结果表明,压电陶瓷传感器有望通过主动感应法用于检测GFRP的损伤变化。In this paper,the piezoelectric ceramic sensor is fixed on the glass fiber reinforced polymer(GFRP)by the external paste method to carry out the damage detection of GFRP.The effect of the depth and number of cracks on the surface of the GFRP specimen on the received signal of the piezoelectric ceramic sensor is studied.The time domain signal map and the energy diagram based on wavelet packet are obtained by combining the active induction method and the energy method based on wavelet packet.Through analyzing the data,it is found that the greater the damage of the GFRP specimen,the smaller the voltage value of the signal received by the sensor and the smaller the signal energy.The experimental results show that the piezoelectric ceramic sensor is expected to be used to detect the damage change of GFRP by the active induction method.

关 键 词：玻璃纤维复合材料(GFRP) 压电陶瓷传感器 主动感应法 小波包 损伤检测 

分 类 号：TN384[电子电信—物理电子学] TM22[一般工业技术—材料科学与工程]