Error analysis of time delay based on ultrasonic phased array structural health monitoring

被引：0

作者：

Ji S. ^{[1
,2
,3
]}

Gu F. ^{[1
,3
]}

Sun Y. ^{[1
,2
,3
]}

Wang J. ^{[4
]}

机构：

[1] Jiangsu engineering Centre of Network Monitoring, Nanjing University of Information Science and Technology, Nanjing

[2] Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology, Nanjing University of Information Science and Technology, Nanjing

[3] School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing

[4] School of Information Engineering, Yangzhou University, Yangzhou

来源：

Journal of Computers (Taiwan) | 2018年 / 29卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Error analysis; Excitation signal; Response signal; Structural health monitoring; Time delay; Ultrasonic phased array;

D O I：

10.3966/199115992018082904014

中图分类号：

学科分类号：

摘要：

Ultrasonic phased array technology becomes significant in structural health monitoring with its flexible beam deflection and strong focusing performance. The transducer is used to complete the multiple directions scanning of the structure. During the process of beam scanning, the signal exciting from each element needs to add a time delay in time domain, due to the difference to the distance from each element to the far field target point, so that the excitation signal can reach the target point and the far field at the same time. Besides, in the process of receiving and transmitting process, it also needs to add a time delay for the response signal, so that the sensor can receive the reflection signal from the preset deflection angle. Therefore, the error will be generated in the calculation of time delay. Making the anti-rust aluminum plate as the experimental object, the process of ultrasonic phased array structural health monitoring will be introduced. And then the reason of time delay error will be pointed out and analyzed. © 2018 Computer Society of the Republic of China. All Rights Reserved.

引用

页码：176 / 184

页数：8

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