控制与信息技术Issue(1)：81-86,6.DOI:10.13889/j.issn.2096-5427.2024.01.011
钢轨探伤车70°探头反射点群分析及判伤应用
Analysis and Flaw Recognition Application of 70° Probe Echoes for Rail Flaw Detection Vehicles
夏浪 1王品 1曹经纬 1李红梁1
作者信息
- 1. 株洲时代电子技术有限公司,湖南 株洲 412007
- 折叠
摘要
Abstract
This paper delves into the impact of abnormal echoes at the rail head on flaw recognition resulting from the central 70° probes on rail flaw detection(RFD)vehicles.Using B-scan data showcasing such 70° probe echoes near a transverse crack at the rail base on a rail flaw detection calibration track,this study elucidated the ultrasonic propagation path through analysis,theoretical calculations,and software simulation.The results identified these echoes as ghost echoes,originating from ultrasonic emissions by the central 70° probe and subsequently reflecting from the transverse crack at the rail base.Meanwhile,considering the characteristics of such ghost echoes,this paper presents practical suggestions for flaw recognition applications under the scenario of 70° echoes near a transverse crack at the rail base and a weld seam.The characteristics of such 70° probe echoes summarized in this paper can improve flaw recognition accuracy and reduce false alarming rates in rail detection.关键词
钢轨探伤车/超声波/幻象波/轨底横向裂纹Key words
rail flaw detection vehicle/ultrasonic/ghost echo/transverse crack at rail base分类
交通工程引用本文复制引用
夏浪,王品,曹经纬,李红梁..钢轨探伤车70°探头反射点群分析及判伤应用[J].控制与信息技术,2024,(1):81-86,6.
