Automatic detection of flats on the rolling stock wheels

• Autorzy: Madejski J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The goal of this work was increasing safety of tram, metro and trams operation. Design/methodology/approach: The accelerometers were fixed directly to the rail to provide the system with the best defect signal quality. Analysis of the acoustic signals collected using microphones proved that too much of the background noise limited their usefulness. Findings: It has been proven that all wheel geometry defects can be reliably detected and classified according to the experimentally established defect categories. Research limitations/implications: Exact measurements of the wheel defect geometry may be possible only after collecting huge signals time series along with the wheel measurements taken with other methods to reveal the relationships between them. This goal is hard to achieve, as the system performs already very well, and such experiments would be very costly and time consuming. Practical implications: Integrated wheel geometrical data collected from the wheel ovality, flat spots, and build-up detection system along with the wheel profile information have eliminated all derailments due to faulty wheel geometry. Originality/value: The system presented is the first wheel monitoring application in Poland, its unique feature is that it can be used at low speeds, like those allowed in depots.

Słowa kluczowe

EN

wheel geometry; wheel flats; build-up; wheel profile; wheel reprofiling; safety of tram operation

PL

geometria koła; koło ze spłaszczeniem; profil koła; przeprofilowanie koła; bezpieczeństwo eksploatacji tramwaju

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2006
• Tom: Vol. 16, nr 1-2
• Strony: 160--163
• Opis fizyczny: Bibliogr. 8 poz., rys., wykr.

Twórcy

autor

Madejski J.

• Division of Materials Processing Technology and Computer Techniques in Materials Science, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland P.U.T. GRAW sp. z o.o., ul. Karola Miarki 12, 44-100 Gliwice, Poland

Bibliografia

• [1] T.X. Wu, D.J. Thompson, A Hybrid Model for Wheel/Track Dynamic Interaction and Noise Generation Due to Wheel Flats, University Of Southampton, Institute of Sound And Vibration Research, Dynamics Group, ISVR Technical Memorandum No. 859
• [2] Rail Regulator questions Railtracks asset management over broken rail, 12 November 1999, Report No ORR/99/50
• [3] P J. Remington, The control of wheel/rail rolling noise at the source, Journal: International Journal of Heavy Vehicle Systems 2000 - Vol. 7, No. 1 pp. 1-21
• [4] J. Jergeus, Railway wheel flats - martensite formation, residual stresses and crack propagation. PhD thesis, Chalmers University of Technology, 1998, Gothenburg, Sweden
• [5] Joint Committee on Relation between Track and Equipment of the Mechanical and Engineering Divisions, AAR 1952 Effect of flat wheels on track and equipment (abstract of eport) American Railway Engineering Association 53, 423-448.
• [6] W. Zhai, C. Cai, Q. Wang, Z. Lu, X. Wu, Dynamic effects of vehicles on tracks in the case of raising train speeds, Proceedings of the I MECH E Part F Journal of Rail and Rapid Transit, Volume 215, Number 2, 12 June 2001, pp. 125-135(11)
• [7] J. Madejski, Track geometry analysis as preventive maintenance data source, Modern Railways Seminar, Beijing, 5-8 July, 2005 (in Chinese)
• [8] GRAW sp. z o.o., Instrukcja obsługi - zbiorcza baza danych kół, Gliwice, 2005 (in Polish)