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Development of a noise related track maintenance tool
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi. (System and Component Design)ORCID iD: 0000-0001-7560-6232
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Machine Elements. KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi. (System and Component Design)ORCID iD: 0000-0003-4447-3363
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi. (System and Component Design)ORCID iD: 0000-0003-2489-0688
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Tribologi. (System and Component Design)ORCID iD: 0000-0002-2578-9453
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2015 (English)In: European Projects and Education: Predictive Maintenance Employing Non-intrusive Inspection & Data Analysis (QUIET-TRACK), 2015Conference paper, Published paper (Refereed)
Abstract [en]

The purpose of this work-package within the Quiet-track, FP7, is to develop a noise related track maintenance tool, in the form of an on-board measurement system. As a first step, lab scale tests using a pin-on-disc tribometer were used in order to distinguish how noise changes when the wear mechanism in a sliding contact shifts from normal wear to severe wear. Once the potential for using sound as an indication of severe wear transitions was established, full scale tests were carried out with a rapid transit (metro) train, type C20. The train was equipped with microphones that continuously measured the sound pressure near the wheel rail contact. In order to provoke severe wear, the test train was run in a curve with small radius, and the rails and wheels were carefully cleaned before the tests. The same kind of transfer from mild to severe wear was identified on the full scale test as in the laboratory scale test, confirmed by studying the surface topography and the morphology of the wear particles. Moreover, the full scale test results showed that the sound pressure changed significantly when transferring from mild to severe wear in agreement with the pin-on-disc test results. By comparing noise from the inner wheel/rail contact to noise form the outer wheel/rail contact a wear indication value for the outer wheel/rail contact is suggested in this study. This value can be seen as an advanced parameter from which the probability of severe wear, in the wheel flange/rail gauge face contact of the outer contact, can be estimated. At present, a real time condition monitoring system is set up in Stockholm (Metro line 1) in order to validate the results.

Place, publisher, year, edition, pages
2015.
National Category
Reliability and Maintenance Vehicle Engineering Transport Systems and Logistics Other Civil Engineering
Research subject
Järnvägsgruppen - Ljud och vibrationer
Identifiers
URN: urn:nbn:se:kth:diva-166259OAI: oai:DiVA.org:kth-166259DiVA: diva2:810149
Conference
The 22nd International Congress on Sound and Vibration (ICSV22), Florence, Italy 12-16 July, 2015
Projects
Quiet-track
Note

QC 20150512

Available from: 2015-05-06 Created: 2015-05-06 Last updated: 2015-07-16Bibliographically approved

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