在线油液磨粒检测聚焦超声换能器声场特性分析

李一宁; 张培林; 杨玉栋; 徐超; 张云强; 吕纯

doi:10.13433/j.cnki.1003-8728.2016.0606

在线油液磨粒检测聚焦超声换能器声场特性分析

doi: 10.13433/j.cnki.1003-8728.2016.0606

1.
军械工程学院七系, 河北石家庄 050003;
2.
武汉军械士官学校四系, 湖北武汉 430075

基金项目:

国家自然科学基金项目(51205405,51305454)资助

详细信息

作者简介:
李一宁(1989-),硕士研究生,研究方向为超声信号处理、在线监测与故障诊断,liyiningoec@163.com

通讯作者:
张培林(联系人),教授,博士生导师,zpl1955@163.com

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- 文章访问数: 165
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- 被引次数: 0
出版历程
- 收稿日期: 2014-08-13
- 刊出日期: 2016-06-05

Characteristic Analysis of Ultrasonic Sound Field for Online Wear Debris Detection in Oil Based on KZK Equation

1.
Department 7^st, Ordnance Engineering College, Shijiazhuang Hebei 050003, China;
2.
Department Four, Mechanical College, Wuhan 430075, China

摘要

摘要: 在线超声磨粒检测结果与超声换能器声场特性密切相关,在线油液超声磨粒传感器也是基于换能器声场特性设计的,运用数值模拟方法可以有效地分析超声波声场的特性。首先从理论方面分析了在线超声磨粒检测方法;然后利用时域有限差分法求解KZK方程对超声换能器声场进行仿真;最后搭建润滑油超声波声场分布测量实验系统实际测量超声波声场特性。仿真与实验结果表明:利用时域有限差分法求解KZK方程能够很好的模拟聚焦超声换能器在润滑油中的声场分布情况,聚焦超声换能器的焦斑区域呈椭圆形,长轴约为4 mm,短轴约为0.4 mm,仿真结果与实验结果具有较好的一致性。研究结果为下一步的超声磨粒传感器设计奠定了基础。
- 在线磨粒检测 /
- 超声波声场 /
- KZK方程 /
- 时域有限差分法
Abstract: The result of online ultrasonic detection of wear debris has close relations with acoustic field features of ultrasonic transducer. Online sensor of wear debris in oil is designed by acoustic field features of ultrasonic transducer. Numerical simulation method can effectively analyze the characteristics of ultrasonic sound field. First, online ultrasonic detection method of wear debris is theoretically reviewed. Then, the finite-difference time-domain method (FDTD) is utilized to solve KZK equation for simulating sound field of ultrasonic transducer. Finally, an experimental system is set up for distribution measurement of ultrasonic sound field in lubrication, and ultrasonic acoustic field feature is measured. The results of simulation and experiment show that FDTD's utilization to solve KZK equation can effectively imitate acoustic field distribution of focused ultrasound transducer in oil. Focal spot of focused ultrasound transducer has an oval shape, and major axis is 4mm and minor axis is 0.4mm. Simulation and experiment show the good consistency. The research builds the foundation for next ultrasonic sensor design of wear debris.
- KZK equation /
- online detection of wear debris /
- time-domain finite difference /
- ultrasonic sound field

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参考文献(16)

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