Title :
Signature analysis on wheel-rail interaction for rail defect detection
Author :
Ho, Tin Kin ; Liu, S.Y. ; Ho, Y.T. ; Ho, K.H. ; Wong, Kenneth K.Y. ; Lee, Khuan Y. ; Tarn, H.Y. ; Ho, S.L.
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Hong Kong
Abstract :
Fibre Bragg Grating (FBG) sensors have been installed along an existing line for the purposes of train detection and weight measurement. The results show fair accuracy and high resolution on the vertical force acted on track when the train wheels are rolling upon. While the sensors are already in place and data is available, further applications beyond train detection are explored. This study presents the analysis on the unique signatures from the data collected to characterise wheel-rail interaction for rail defect detection. Focus of this first stage of work is placed on the repeatability of signals from the same wheel-rail interactions while the rail is in healthy state. Discussions on the preliminary results and hence the feasibility of this condition monitoring application, as well as technical issues to be addressed in practice, are given.
Keywords :
Bragg gratings; condition monitoring; fibre optic sensors; flaw detection; mechanical contact; rails; railway engineering; signal processing; vehicle dynamics; wheels; FBG; condition monitoring application; fibre Bragg grating sensor; rail defect detection; signature analysis; train detection; train wheels; weight measurement; wheel-rail interaction; Remote sensing; rail defect detection; wheel-rail interactions;
Conference_Titel :
Railway Condition Monitoring, 2008 4th IET International Conference on
Conference_Location :
Derby
Print_ISBN :
978-0-86341-927-0