列车车轮超声波自动探伤机研制  

Development of an Automatic Ultrasonic Detector for Train Wheel Flaw

作　　者：傅晔[1] 王晓娜 杜学钢 高成旺 

机构地区：[1]南车青岛四方机车车辆股份有限公司,山东青岛266111 [2]北京博力加机电技术发展中心,北京100083

出　　处：《物理测试》2013年第3期51-54,共4页Physics Examination and Testing

摘　　要：为了满足列车提速和车轮快速准确探伤的需要,研制了列车车轮超声波自动探伤机。探伤机通过旋转扫查的方式,由8通道分设2个探头组,同时扫查轮毂的内侧面和踏面;通过工控机与DMC运动控制卡控制液压系统和驱动电机实现自动探伤的各种运动;通过应用小波变换对超声波回波信号进行降噪处理;基于Labwindows/CVI编写操控软件,实现人机交互。实际应用表明该自动探伤机结构合理、运行稳定可靠,降低了探伤的劳动强度,提高了列车车轮探伤的效率和准确性。In this study,an automatic ultrasonic detector for train wheel flaw detection is developed for the need of train＇s running speed increase and testing wheels in a more accurate and rapid way.The detector which has 8 channels in 2 groups can detect the wheel＇s inner side surface and tread at the same time through rotatational scanning.Automatic motion is done in a way where IPC（Industrial Personal Computer） along with DMC motion control card controls a hydraulic system and electromotors.The WT（wavelet transform） is applied during the process of noise reduction of ultrasonic echo,and the overall detection software is programmed based on Labwindows/CVI to perform man-machine interaction.Practical application in workshop reveals that it owes appropriate structure and high stability.This detector can relieve workers from high labour intensity and significantly increase efficiency and accuracy of train wheel flaw detection.

关 键 词：无损检测 超声波 运动控制 小波降噪 LABWINDOWS CVI 

分 类 号：TH878.2[机械工程—仪器科学与技术]