Acoustic field directivity and energy research of PZT embedded in concrete

HUANG Run1; CHEN Yu2; LI Peng-cheng2; TAN Bin2; CHEN Hao2

doi:10.13873/j.1000-97872012.01.011

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Acoustic field directivity and energy research of PZT embedded in concrete

更新时间：2025-09-11

- Acoustic field directivity and energy research of PZT embedded in concrete
- Vol. 31, Issue 1, Pages: 7-9+13(2012)
- 作者机构：
  
  1. 重庆大学光电工程学院
  2. 四川大学电子信息学院
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872012.01.011
  CLC： TU375
- Published：2012
- 稿件说明：
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[1]黄润,陈雨,李鹏程,谭斌,陈浩.埋入混凝土中PZT声场指向性和声能研究[J].传感器与微系统,2012,31(01):7-9+13.

HUANG Run1, CHEN Yu2, LI Peng-cheng2, et al. Acoustic field directivity and energy research of PZT embedded in concrete[J]. 2012, 31(1): 7-9+13.
[1]黄润,陈雨,李鹏程,谭斌,陈浩.埋入混凝土中PZT声场指向性和声能研究[J].传感器与微系统,2012,31(01):7-9+13. DOI： 10.13873/j.1000-97872012.01.011.

HUANG Run1, CHEN Yu2, LI Peng-cheng2, et al. Acoustic field directivity and energy research of PZT embedded in concrete[J]. 2012, 31(1): 7-9+13. DOI： 10.13873/j.1000-97872012.01.011.

摘要

将PZT作为声源埋入混凝土中构成的混凝土压电机敏模块具有超声检测功能。对埋入该模块中的PZT圆片模态分析发现

在各阶振动模态下PZT声辐射面存在分布不同的振幅极大值区域。基于混凝土压电机敏模块的声场指向性和声能实验表明:将PZT声辐射面等效为振幅相等的单一点声源的叠加

忽略振动模态对声场指向性影响

使得PZT圆片的声场指向性随频率变化规律偏离实际较大

而且在相同频率下声场指向性理论结果比实验结果发散;在各阶固有频率激励下

PZT圆片的声场指向性集中

但在一阶固有频率下声能最高

更适用于超声检测。

Abstract

The smart concrete module embedded PZT seen as acoustic source is with ultrasonic detection function.Model analysis of PZT wafer shows different maximum multitude distribution on the wafer acoustic radiating surface.The experiment based on smart concrete module shows while the radiating surface seen as superposition of equal multitude single point source and ignoring the vibration mode

the acoustic directivity variation deviates from the actual with frequency

and the directivity becomes divergent at a frequency.The first natural frequency is more suitable for ultrasonic detection considering the acoustic directivity and energy.

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references

基于压电埋入式模块的混凝土声检测研究 [D]. 安占营. 重庆大学 2010

混凝土无损检测技术手册[M]. 人民交通出版社 , 吴新璇主编, 2003

ANSYS实用分析教程[M]. 北京大学出版社 , 任重编著, 2003

固体中的声场和波[M]. 科学出版社 , [美]奥尔特（B·A· Auld）著, 1982

Characterization of PZT ceramic transducer embedded in concrete [J] . Yu Chen,Yumei Wen,Ping Li. Sensors & Actuators: A. Physical . 2006 (1)

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