金属磁记忆技术在无缝钢轨温度应力检测中的研究  

Research on Application of Metal Magnetic Memory Technology in Testing Temperature Stress of Seamless Rail

作　　者：刘磊[1] 舒迪[1] 董炳义[2] 邸锦玉[2] 

机构地区：[1]北京化工大学,北京100029 [2]北京铁路局,北京100071

出　　处：《铁道工程学报》2010年第11期56-60,共5页Journal of Railway Engineering Society

摘　　要：研究目的:如何对无缝钢轨的温度应力进行连续、动态、准确的监测,是铁路部门长期悬而未决的难题。因此如果能够实时检测线路实际的纵向温度应力,对指导线路的维修,以及对发生胀轨和断轨事故的可能性做出合理的评估具有重大的意义。研究结论:介绍了采用TSM-1M-4型金属磁记忆检测仪在无缝钢轨温度应力检测中的研究。在北京铁路局丰台工务段,对一段总长为1515 m的无缝钢轨检测过程中磁记忆检测技显示出良好的规律性。试验表明,该技术在铁路突发性胀轨事故的早期诊断检测中具有很大的优势。Research purposes： How to continuously,dynamically,accurately monitor the temperature stress of seamless rail is the problem unsolved for long time.Therefore,real-time detection of the actual vertical temperature of the track is of great significance to instructing the track maintenance and evaluating the possibility of appearance of broken rail and buckled track.Research conclusions：The introduction is given to the research on application of metal magnatic memory technology in testing the temperature stress of seamless rail by using TSM-1M-4 Magnetic Memory Detector.Application of TSM-1M-4 Magnetic Memory Detector in testing the temperature stress of 1 515 m long rail administrated by Fengtai Track Maintenance Section of Beijing Railway Administration shows this metal magnatic memory technology has a big merits in early-time diagnosis of sudden buckled track.

关 键 词：金属磁记忆 无缝钢轨 无损检测 应力集中区 

分 类 号：TH7[机械工程—仪器科学与技术]