Simulation on high speed rail magnetic flux leakage inspection

Based on the background of high speed rail, this paper researches the speed effect on rail magnetic flux leakage (MFL) inspection and the recognition of rail oblique cracks by the finite element method (FEM). Firstly, the effect of the testing speed on the MFL signals is discussed theoretically by f...

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Bibliographic Details
Published in2011 IEEE International Instrumentation and Measurement Technology Conference pp. 1 - 5
Main Authors Zhijun Chen, Jianqing Xuan, Ping Wang, Haitao Wang, Guiyun Tian
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2011
Subjects
Finite element
Finite element methods
High speed rail
Inspection
Magnetic fields
Magnetic flux leakage
Magnetic flux leakage inspection
Mathematical model
Oblique crack
Rails
Speed effect
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ISBN1424479339
9781424479337
ISSN1091-5281
DOI10.1109/IMTC.2011.5944294

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Summary:Based on the background of high speed rail, this paper researches the speed effect on rail magnetic flux leakage (MFL) inspection and the recognition of rail oblique cracks by the finite element method (FEM). Firstly, the effect of the testing speed on the MFL signals is discussed theoretically by formulation; secondly, the research model is established in Ansoft software; thirdly, the numerical analyses are performed detailedly, which include the effects of testing speeds on MFL signals, the recognition of depth and width of rectangle crack with speed effect, the MFL signal differences between oblique crack and rectangle crack, the recognition of depth and width of oblique cracks, the recognition of several parallel oblique cracks, etc. The simulation conclusions could provide guidance for the further experimental research.
ISBN:1424479339
9781424479337
ISSN:1091-5281
DOI:10.1109/IMTC.2011.5944294