摘要
在复合材料的结构健康监测中,一般采用压电元件作为激励源和接收源进行主动监测,室温下监测效果良好。但是,当温度发生一定变化的时候,往往达不到理想的监测效果。本文首先分析了压电元件本身的温度特性,接着介绍了一种基于Lamb波的结构载荷定位系统,并通过设计实验说明了该系统存在的温度效应以及这种温度效应对于定位精度的影响。
Piezoelectric materials and Lamb wave technology are widely used on structure health monitoring. In the room temperature, the system works well, but it will make the wrong diagnosis if the temperature changes greatly. In this paper, temperature effects on piezoelectric materials are investigated at first. Next, the temperature effect in the active lamb-based lord localization system is develooed.
出处
《传感器世界》
2008年第2期22-24,37,共4页
Sensor World
关键词
压电材料
载荷定位
温度效应
Piezoelectric materials
load localization
temperature effect