Effect of the magnetic particles concentration on the ferro-oil’s dynamic viscosity in presence of an external magnetic field in the aspect of temperature changes

• Autorzy: Czaban A. , Frycz M. , Horak W.
• Języki publikacji: EN

Abstrakty

EN

There is presented an effect of the changes of the concentration of magnetic particles included in the ferro-oil on its dynamic viscosity in the presence of external magnetic field in this paper. The study was conducted in the context of temperature’s changes. The authors assume that the concentration of magnetic particles in ferro-oil can significantly affects its basic physical properties as dynamic viscosity, as well as the operational properties of journal sliding bearings ferro-oil’s lubricated. The equally significant as the above mentioned properties may affect the external environmental conditions of operation, especially temperature changes. In this context, an important technique’s issue appears to determine the principles of selection of optimal concentration of above mentioned particles according to the existing environmental conditions of its operation, or the expectations laid against the operation of the devices. Rheological studies were carried out on Physica MCR 301 rheometer in the “plate-to-plate” measurement system with an adapter to magneto-rheological studies MRD 180/1T. Thermal stabilization was carried out by a water jacket in a closed chamber and controlling the nature of the magnetic field was conducted by current’s changes. Tests were performed for four selected temperature range of 60º, 70º, 80º and 90ºC as regards changes an external magnetic field intensity 0-700 mT. The selected concentrations of magnetic particles in a ferro-oil were 1, 2, 4, 6 and 8%.

Słowa kluczowe

EN

ferro-oil; dynamic viscosity; magnetic particles concentration; temperature changes; external magnetic field

• 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: 2013
• Tom: Vol. 20, No. 2
• Strony: 55--60
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Czaban A.

• Maritime University Gdynia, Faculty of Marine Engineering Morska Street 83, 81 225 Gdynia, Poland tel.: [phone], fax: [phone]

autor

Frycz M.

• Maritime University Gdynia, Faculty of Marine Engineering Morska Street 83, 81 225 Gdynia, Poland tel.: [phone], fax: [phone]

autor

Horak W.

• AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics Mickiewicza Av. 30, 30-059 Krakow, Poland tel.: [phone]

Bibliografia

• [1] Frycz, M., Effects of concentration of magnetic particles on ferrooil’s dynamic viscosity as a function of temperature and shear rate, Journal of KONES Powertrain and Transport, Vol. 19, No.2, pp. 159-165, 2012.
• [2] Frycz, M., Effect of Temperature and Deformation Rate on the Dynamic Viscosity of Ferrofluid, Solid State Phenomena, Vol. 199, pp. 137-142, 2013.
• [3] Frycz, M., Miszczak, A., Distribution of hydrodynamic pressure in the interspace of lateral sliding bearings lubricated by ferrofluid with different concentrations of magnetic particles, Journal of KONES Powertrain and Transport, Vol. 18, No. 3, pp. 83-89, 2011.
• [4] Frycz, M., Miszczak, A., The friction force and friction coefficient in the journal sliding bearing ferrofluid lubricated with different concentrations of magnetic particles, Journal of KONES Powertrain and Transport, Vol. 18, No. 4, pp. 113-120, 2011.
• [5] Miszczak, A., Experimental values of temperature distribution in sliding bearing sleeve lubricated with non-Newtonian oils, Polish Maritime Research, Vol. 12, No. 3 (45), pp. 16-26, 2005.
• [6] Miszczak, A., Analiza hydrodynamicznego smarowania ferrocieczą poprzecznych łożysk ślizgowych, Monography, Akademia Morska w Gdyni, Gdynia 2006.
• [7] Rosenweig, R. E., Ferrohydrodynamics, Dover Publications INC, Mineola, NewYork 1997.
• [8] Schramm, G., Reologia. Podstawy i zastosowania, Ośrodek Wydawnictw Naukowych PAN, Poznań 1998.