车轮浅表层缺陷试块的全聚焦相控阵超声检测分析  

Analysis of Total Focusing Method Phased Array Ultrasonic Testing for Shallow Surface Defect Test Blocks of Wheels

作　　者：潘碧琳 杨兴宽 黄永巍 李立凡 PAN Bilin;YANG Xingkuan;HUANG Yongwei;LI Lifan(Metals and Chemistry Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司金属及化学研究所,北京100081

出　　处：《高速铁路新材料》2025年第2期75-80,共6页Advanced Materials of High Speed Railway

基　　金：中国铁道科学研究院集团有限公司科研项目(2024YJ160);中国国家铁路集团有限公司科技研究开发计划(J2022J007)。

摘　　要：针对车轮浅表层缺陷难以检测的问题,根据实际服役车轮中常见的缺陷特征,设计了包含不同长度、深度和角度的浅表层裂纹试块,并采用全聚焦相控阵超声技术进行检测。通过对比分析全聚焦相控阵超声技术、相控阵扇扫及常规超声检测技术在浅表层裂纹检出能力、定位精度与成像质量方面的差异。结果表明:全聚焦相控阵超声技术在检出率、检测误差、图像信噪比以及缺陷深度定位精度上均表现最优,体现了其在车轮浅表层缺陷检测方面的显著优势。In response to the difficulty of detecting shallow surface defects in wheels,shallow crack test blocks with different lengths,depths,and angles based on the common defect characteristics in actual service wheels were made.Total focusing method phased array ultrasonic technology was used to detect them.By comparing and analyzing with phased array fan scanning and conventional ultrasonic testing technique,the differences in shallow crack detection ability,positioning accuracy,and imaging quality among the three methods were compared.The results show that the total focusing method phased array technology performs the best in detection rate,detection error,image signal-to-noise ratio,and defect depth localization accuracy,reflecting its significant advantages in shallow surface defect detection of wheels.

关 键 词：车轮 浅表层裂纹 全聚焦算法 相控阵超声检测 

分 类 号：U279[机械工程—车辆工程]