超声兰姆波激励技术研究  

Technology of Ultrasonic Lamb Wave Excitation

作　　者：李佳 李辉 李万军 Li Jia;Li Hui;Li Wanjun(School of Electronic and Control Engineering,North China Institute of Aerospace Engineering,Langfang 065000,China;Maintenance and Emergency Repair Company of China Petroleum Pipeline Engineering Co.,Ltd,Langfang 065000,China)

机构地区：[1]北华航天工业学院电子与控制工程学院,河北廊坊065000 [2]中国石油管道局工程有限公司维抢修分公司,河北廊坊065000

出　　处：《北华航天工业学院学报》2024年第4期12-14,30,共4页Journal of North China Institute of Aerospace Engineering

基　　金：北华航天工业学院科研基金项目(ZD-2021-03)。

摘　　要：本文全面探索了超声兰姆波激励方法及其在结构健康监测中的应用。文中详细讨论了包括压电换能器、电磁脉冲以及激光激发等多种兰姆波激发方式,并针对它们的工作原理和适用条件进行了分析。本文详细描述了用于激励和信号处理的高压激发电路与相控阵Lamb波激励电路设计,讨论了通过FPGA实现精确控制激发延时的能力。清晰地提出了超声激励参数选择的标准,如激励频率和入射角,对提升检测技术的性能至关重要。并展望研究将集中于新型传感器技术的发展和信号处理技术的改进,以提升兰姆波用于结构健康监测的准确性和可靠性。This article thoroughly explores ultrasonic Lamb wave excitation methods and their application in structural health monitoring.It discusses various Lamb wave excitation approaches,including piezoelectric transducers,electromagnetic pulses,and laser irradiation,analyzing their working principles and conditions of application,and it provides a detailed description of high-voltage excitation circuitry and phased array Lamb wave excitation circuit design,discussing the precision control of excitation delays achieved through FPGA. Furthermore,It clearly outlines the criteria for choosing ultrasonic excitation parameters,such as excitation frequency and incidence angle,which are crucial for enhancing the performance of detection technologies. The outlook suggests that research will focus on the development of new sensor technologies and improvement in signal processing techniques to increase the accuracy and reliability of Lamb waves in structural health monitoring.

关 键 词：兰姆波 激发方式 激发参数 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]