Friction forces measurements by the acoustic emission for slide bearing test stand in uni of applied science Giessen

• Autorzy: Ziegler B. , Wierzcholski K. , Miszczak A.
• Języki publikacji: EN

Abstrakty

EN

The present paper describes the results of measurements performed in University of Applied Science Giessen and determined hydrodynamic friction forces in journal slide bearings by using the Acoustic Emission Method. It describes the use of the Acoustic Emission Analysis as an indicator of the bearing friction at slide bearings. The investigations were made at two different test stands. The test stand at Maritime University Gdynia covers the hydrodynamic operation range, the test stand at University of Applied Science Giessen the mixed friction area. The successive steps of measurements of the hydrodynamic friction forces are presented in this paper. Hardness and roughness of cooperating surfaces is in this paper particularly described. The friction values and its boundary conditions at the test were measured for the low bearing load and for the high bearing load. In both cases, the dependencies between friction forces and time are exactly obtained. During the measurements, the temperature is taken into account. The advantage of this method is the fact that these oscillations can be executed directly from the source to the sensor, what enables us to do an "online-measurement". The Acoustic Emission Analysis is (in opposite to the aforementioned friction power measurement) a relative method, which means, that the absolute amount of a RMS-Value depends on the measuring chain. The results are compared and discussed with other results obtained in experiments performed in Maritime University Gdynia.

Słowa kluczowe

EN

acoustic emission (AE); RMS; experimental data; test stand; journal bearing

• 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: 2008
• Tom: Vol. 15, No. 4
• Strony: 627--633
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Ziegler B.

autor

Wierzcholski K.

autor

Miszczak A.

• University of Applied Sciences Gießen-Friedberg Wiesenstr. 14, 35390 Gießen, Germany tel:[phone], fax:[phone],

Bibliografia

• [1] American Society of Testing Materials, Standard Guide for Determining the Reproducibility of Acoustic Emission Sensor Response, American Society for Testing and Materials, USA, pp. 976-94, 2003.
• [2] Chao, Zhang, Zixia, Yi, Zhiming, Zhang, THD Analysis of Higd Speed Heavily Loaded Journal Bearings Including Thermal Deformation, Mass Conserving Cavitation, and Turbulent Effects. Transactions of the ASME, Journal of Tribology, Vol. 122, pp. 597-602, 2000.
• [3] Czichos, H., Habig, K.-H., Tribologie - Handbuch Reibung und Verschleis, Vieweg & Sohn Verlag, Wiesbaden, 2003.
• [4] Dwyer-Joyce, R. S., Harper, P., Drinkwater, B. W., A Method for the Measurement of hydrodynamic Oil Films Using Ultrasonic Reflection, Springer Verlag, Tribology Letters, Vol. 17 No. 2, pp. 337-348, 2004.
• [5] Ma, M.-T., Taylor, C. M., An experimental investigation of thermal effects in circular and elliptical plain journal bearing, Tribology International, Vol. 29 No. 1, pp. 19-26, 1996.
• [6] Niemann, G., Winter, H., Hohn, B.-R., Maschinenelemente, Band 1, Berechnung und Konstruktion von Maschinenelementen, Springer, Berlin, 2001.