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结构健康监测技术成为目前土木工程领域的一个研究热点,特别是基于智能材料的结构健康监测技术更是热点中的热点。以锆钛酸铅(PZT)为代表的压电材料依据正压电效应可实现传感功能,依据逆压电效应可实现驱动功能。且具有易加工、质量轻、不受外界环境影响、成本低廉以及适合实时监测等特点。将其用于土木工程结构健康监测领域具有明显的优势。本文重点介绍了基于压电阻抗法的结构健康监测基本原理,阐述的该方法用于土木工程结构健康监测领域的国内外研究进展,最后总结了压电阻抗法的优点及不足,并对其应用前景加以展望。
Structural health monitoring technology has become a hot topic in the field of civil engineering. Especially the structural health monitoring technology based on smart materials is a hot topic in the field. Piezoelectric materials represented by lead zirconate titanate (PZT) can realize the sensing function according to the positive piezoelectric effect, and the driving function can be realized according to the inverse piezoelectric effect. And has easy processing, light weight, free from the impact of the external environment, low cost and suitable for real-time monitoring and so on. It has obvious advantages in the field of structural health monitoring of civil engineering. In this paper, the basic principles of structural health monitoring based on piezoelectric impedance method are introduced. The method is applied to the research progress in the field of structural health monitoring of civil engineering. Finally, the advantages and disadvantages of piezoelectric impedance method are summarized. Prospect of the future.