南昌工程学院学报2018，Vol.37Issue(1)：37-40,4.
轮轨摩擦温升对脉冲涡流响应信号的影响研究
Study on effect of frictional temperature on pulsed eddy current testing
摘要
Abstract
Pulsed eddy current(PEC)testing technology is used to detect the defects through sensing the changes of physical properties.Frictional temperature is an inevitable phenomenon during train running,which can change the physical proper-ties of the rail in a short time.During the high-speed running of the train,the impacts on the results of electromagnetic de-tection technologies,such as PEC testing,caused by the frictional temperature are not negligible,especially for the detection of minor damage.Based on the classical Herz contact theory and multi-field coupling model,this paper studies the influence of frictional temperature rise on the PEC detection signal.The simulation results show that the frictional temperature between the wheel and rail can cause the false detection of defect,which may threaten the safe running of train.关键词
脉冲涡流检测/摩擦温升现象/Herz接触理论/多场耦合方法Key words
pulsed eddy current/frictional temperature/Herz contact theory/multi-field coupling model分类
矿业与冶金引用本文复制引用
刘宝玲..轮轨摩擦温升对脉冲涡流响应信号的影响研究[J].南昌工程学院学报,2018,37(1):37-40,4.基金项目
江西教育厅科技项目(GJJ161104) （GJJ161104）
江西省科技厅面上项目(20171BAB206037) （20171BAB206037）
江西省精密驱动与控制重点实验室开放基金项目(PLPDC-KFKT-201608) （PLPDC-KFKT-201608）
