动车组列车车轮超声波检测异常反射回波分析研究
张勇周广浩程志义杜雨欣孟庆顺刘创
Analysis and Research on Ultrasonic Detection Abnormal Reflection Echo of EMU Wheels
ZHANG YongZHOU GuanghaoCHENG ZhiyiDU YuxinMENG QingshunLIU Chuang
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作者信息:中车长春轨道客车股份有限公司质量保证部, 130062, 长春
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Affiliation:Quality Assurance Department, CRRC Changchun Railway Vehicles Co., Ltd., 130062, Changchun, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.02.032
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中图分类号/CLCN:U266.2;U270.331+1
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栏目/Col:应用技术
摘要:
对速度为350 km/h动车组动车车轮超声波检测过程中定位销孔处产生的异常反射回波进行了分析。结果表明，该异常反射回波在定位销孔固有回波之后出现，且声程差固定；两个定位销孔之间存在的较大接触应力是产生异常反射回波的主要原因。对定位销孔两侧异常反射情况和定位销孔应力的来源进行了试验验证。验证结果表明，该类型异常反射回波为非缺陷波，定位销孔处的应力为动车组车轮运行过程中所产生。
Abstracts:
In this paper, the abnormal reflection echo is analyzed and studied, which is generated at the positioning pin hole during the ultrasonic detection of 350 km/h EMU wheels. The results show that the abnormal reflection echo appears after the inherent echo of the positioning pin hole, and the sound distance is fixed. The larger contact stress between two positioning pin holes is the main reason for the abnormal reflection echo. Then, the abnormal reflection on both sides of the positioning pin hole and the source of the positioning pin hole stress are tested and verified. The verification results show that this type of abnormal reflection echo is nondefect wave, and the positioning pin hole stress is generated during the operation of EMU wheels.
引文 / Ref:
张勇, 周广浩, 程志义, 等. 动车组列车车轮超声波检测异常反射回波分析研究. 城市轨道交通研究, 2022, 25(2): 134.
ZHANG Yong, ZHOU Guanghao, CHENG Zhiyi. Analysis and research on ultrasonic detection abnormal reflection echo of EMU wheels. Urban Mass Transit, 2022, 25(2): 134.
ZHANG Yong, ZHOU Guanghao, CHENG Zhiyi. Analysis and research on ultrasonic detection abnormal reflection echo of EMU wheels. Urban Mass Transit, 2022, 25(2): 134.
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