1-3正交异性聚合物/水泥基压电复合材料的研究

2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) Pub Date : 2016-10-01 DOI:10.1109/SPAWDA.2016.7829951

S. Zhai, Yongchen Wang, Bo Geng, Hong-chao Xu, Shi-feng Huang

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引用次数: 1

摘要

以PZT-51为功能部件，环氧树脂/水泥为基体，采用两次切割填充法制备1-3正交各向异性聚合物/水泥基压电复合材料(OPCM)作为声发射传感器。采用铅笔芯断路作为信号源采集混凝土表面的声发射信号，采用声发射技术对信号源进行线性定位测试。结果表明，信号幅值和电压随距离和角度的变化而变化，沿0°和180°方向最大，表明OPCM具有良好的正交各向异性。衰减曲线呈现幅值和电压信号在近场区急剧下降，远场区稳定下降的趋势。作为传感器的OPCM能够接收到衬垫定位过程中的各个信号，定位精度可达95%以上，为OPCM利用声发射技术进行土木工程健康监测提供了基础。

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Study on the 1–3 orthotropic polymer/cement based piezoelectric composite

The 1–3 orthotropic polymer/cement based piezoelectric composite(OPCM) fabricated using PZT-51 as functional part and epoxy resin/cement as matrix via twice cutting-filling methods was to be used as acoustic emission (AE) sensors. The acoustic emission signals were collected by pencil lead-break as signal source on the concrete surface and the linear location test of signal source was carried by AE technique. The results showed that the values of signal amplitude and voltage both varied from distance and angle, it reached the maximum along the direction of 0° and 180°, which exhibited the OPCM an excellent orthotropic property. The attenuation curve showed a trend that signals of amplitude and voltage decreased sharply in near field region and reduced steadily in far field area. The OPCM used as sensors could receive each signal in the process of liner location, and the positioning accuracy could reach above 95%, which provide a basic for the OPCM to carry out health monitoring of civil engineering with AE technique.

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2016 Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA)

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