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A. Bracciali, F. Piccioli, "Effect of Load on Vibrations of a Railway Gearbox", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 306, 2014. doi:10.4203/ccp.104.306

Keywords: gearbox, vibrations, railway, metro, condition monitoring, kurtosis, failure, bearings.

Summary

Condition monitoring of a railway gearbox installed on a metro vehicle is described. The peculiarities of the application, which led to a sort of "bouncing" of the whole gearbox when running in coasting at high speed, are such that extensive failures of the cage of a taper roller bearing were observed and related to the abnormal accelerations measured on the casing. The complexity of the signals led to the need to use numerical indicators more sophisticated than levels or energy. A proper combination of different indicators was checked during tests in different conditions and verified through the application of the procedure to signals from regular service. A combination of energy and kurtosis was found to give the best results in terms of reliability of detection.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 306 Effect of Load on Vibrations of a Railway Gearbox A. Bracciali and F. Piccioli Dipartimento di Ingegneria Industriale, Università di Firenze, Italy doi:10.4203/ccp.104.306 purchase the full-text of this paper Full Bibliographic Reference for this paper A. Bracciali, F. Piccioli, "Effect of Load on Vibrations of a Railway Gearbox", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 306, 2014. doi:10.4203/ccp.104.306 Keywords: gearbox, vibrations, railway, metro, condition monitoring, kurtosis, failure, bearings. Summary Condition monitoring of a railway gearbox installed on a metro vehicle is described. The peculiarities of the application, which led to a sort of "bouncing" of the whole gearbox when running in coasting at high speed, are such that extensive failures of the cage of a taper roller bearing were observed and related to the abnormal accelerations measured on the casing. The complexity of the signals led to the need to use numerical indicators more sophisticated than levels or energy. A proper combination of different indicators was checked during tests in different conditions and verified through the application of the procedure to signals from regular service. A combination of energy and kurtosis was found to give the best results in terms of reliability of detection. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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