3-3复合压电换能器特性研究——(Ⅱ)在岩体中的声特性

Researches on the Performance of 3-3 Connectivity Composite Piezoelectric Transducers (Ⅱ)——Measiuremeut of Acoustic Properties of Rock Materials

本文介绍了3-3复合压电换能器的一种最新应用:配对3-3复合压电换能器借助微机采集超声脉冲,观察混凝土整个受力破坏全过程,成功地监测了材料受力的初裂点。首次获得了科学的标定方法。

In this paper,a new application of 3-3 connectivity composite piezoelectric tra-nsducers to rock materials is presented.Using this kind of transducers combinedwith a microcomputer,we have successfully monitored the whole process of fractureof a concrete beam stressed,and quantitatively demarcated the first crack point ofthe material stressed for the first time.