基于高频涡流的高铁主结构焊接缺陷在线检测技术  

On-line Detection Technology of Welding Defects in Main Structure of High-speed Railway Based on High Frequency Eddy Current

作　　者：胡珈玮 黄平[1] 张国恒 白石 杨爽 黄惠琳 喻玥 苑崇华 邱志川 HU Jiawei;HUANG Ping;ZHANG Guoheng;BAI Shi;YANG Shuang;HUANG Huilin;YU Yue;YUAN Chonghua;QIU Zhichuan(School of Information Science and Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学信息科学与工程学院,沈阳110870

出　　处：《无损探伤》2025年第2期20-24,29,共6页Nondestructive Testing Technology

基　　金：国家重点研发计划(2023YFB3407803);辽宁省自然科学基金联合基金(面上资助计划项目)(2023-MSLH-261)。

摘　　要：本文提出了一种基于高频涡流技术的在线检测方法,用于实时监测焊接过程中产生的缺陷。该方法利用高频磁场在焊缝区域的反射特性,通过分析感生信号的变化来识别缺陷是否存在。研究首先分析了高铁主结构焊接缺陷的产生机理及其对结构性能的影响。在此基础上,通过有限元仿真软件Maxwell对探头进行了模型建立和可行性分析。仿真结果表明,该方法能够有效检测不同尺寸的缺陷。为了实现对缺陷的准确测量,本文设计了阻抗测量电路和电感测量电路,并进行了电路仿真实验。该研究为高铁焊缝缺陷检测提供了可行的解决方案,对提高高铁运行的安全性和可靠性具有重要意义。This paper proposes an online detection method utilizing high-frequency eddy current technology for real-time monitoring of welding defects.The method leverages the reflection characteristics of high-frequency magnetic fields within the weld zone to identify defects by analyzing variations in the induced signal.The study first examines the generation mechanism of welding defects in high-speed railway main structures and their impact on structural performance.Subsequently,the probe was modeled and its feasibility analyzed using the finite element simulation software Maxwell.Simulation results demonstrate the method's effectiveness in detecting defects of varying sizes.To enable precise defect measurement,this paper presents the design of impedance and inductance measurement circuits,accompanied by circuit simulation experiments.This research provides a practical solution for the detection of welding defects in high-speed rail,contributing significantly to enhancing the safety and reliability of high-speed rail operations.

关 键 词：高频涡流 高铁主结构 焊接缺陷 MAXWELL 

分 类 号：TG115.28[金属学及工艺—物理冶金]