Application of vibroacoustic signal to diagnose disck braking system

• Autorzy: Sawczuk W.
• Języki publikacji: EN

Abstrakty

EN

Attempt to raise train speed involves application of greater braking power i.e. braking systems rapidly absorbing and dispersing stored heat energy. To maintain high efficiency of braking system in the whole operational process, it is necessary to control the friction set: brake and pad before reaching limitary wear particularly of friction pads. Stable and constant - in the whole speed range- coefficient of friction "mi" and realization of greater pad's pressures to the disc because of better conditions of warmth offtaking generated during braking into the athmoshere are basic advantages of disc brake systems [8]. Few disadvantages of disc brake include a lack of possibility of controlling the condition of the friction set: brake and pad in the whole operation time. It is particularly observable in rail cars, where disc brakes are mounted on the axle of the axle set between the wheels. To check the wear of friction pads and brake discs it is necessary to apply inspection channel to carry out inspections, and to carry out replacement of friction parts in case they reach their limitary wear. The purpose of this research is to apply vibration signal of pad calipers to assess the wear of friction pads of disc brake by defining characteristics of time, amplitude and selected frequency characteristics during tests at internal brake station.

Słowa kluczowe

EN

disc brake; wear of friction pad; vibration signal; amplitude characteristics; frequency characteristics

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2011
• Tom: Vol. 18, No. 1
• Strony: 525--534
• Opis fizyczny: Bibliogr. 9 poz,. rys.

Twórcy

autor

Sawczuk W.

• Poznan University of Technology, Faculty of Working Machines and Transportations Piotrowo Street 3, 60-965 Poznan, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Bocian, S., Boguś, P., Kaluba, M., Kardacz A., Pozyskanie obrazu przez komputerowe systemy graficzne do wizyjnej kontroli i diagnostyki hamulca tarczowego, Pojazdy Szynowe, nr 2, pp. 37-53, 2000.
• [2] Brüel & Kjær, Measuring Vibration, Revision September 1982.
• [3] Brüel & Kjær, Piezoelectric Accelerometer Miniature Triaxial Delta Tron Accelerometer – Type 4504A, oferta firmy Brüel & Kjær.
• [4] Cempel, C., Podstawy wibroakustycznej diagnostyki maszyn, WNT, Warszawa 1982.
• [5] Gruszewski, M., Wybrane zagadnienia eksploatacji hamulca tarczowego, Technika Transportu Szynowego, nr 6-7, pp. 84-86, 1995.
• [6] Gryboś, R., Drgania maszyn, Wydawnictwo Politechniki Śląskiej, Gliwice, pp. 214, 2009.
• [7] Kodeks UIC 541-3, Hamulec-Hamulec tarczowy i jego zastosowanie. Warunki dopuszczenia okładzin hamulcowych, Wydanie 6, listopad 2006.
• [8] Sawczuk, W., Szymański, M. G., Zastosowanie sygnału drganiowego do oceny stanu technicznego pary ciernej hamulca kolejowego, Materiały 28 mezinárodní vědecká konference DIAGO® 2009, Czechy Rožnov pod Radhoštěm, 27–28.01.2009 Technickà DIAGNOSTIKA, z 1 Ročník XVIII 2009, s. 34 - streszczenie, referat na CD, pp. 271-275, 2009.
• [9] http://www.mermecgroup.com/diagnostics/rolling-stock-inspection/96/1/brake-padswear.php (18.02.2011).