Impact of magnetic particles concentration in ferrooil on its magnetic susceptibility coefficient χ

• Autorzy: Frycz M. , Anioł A.

Identyfikatory

DOI

10.5604/12314005.1130454

• Języki publikacji: EN

Abstrakty

EN

The purpose of this article is to determine the effect of the concentration of magnetic particles in ferro-oil on the value of its magnetic susceptibility coefficient χ. Determination of the flow and operating parameters of slide journal bearings lubricated with ferro-oils requires, inter alia, designation the first magnetization N and the magnetic induction B vector components, dependent on the magnetic propertis of the lubricant. The fundamental problem lies in the inability to make direct accurate measurement of magnetic induction in the lubricating gap of slide bearing and its solution is to determine it on the analytical and numerical way. A key issue for the accuracy of such solutions is to obtain reasonably accurate values of magnetic susceptibility χ. This article attempts to determine these values and estimate their relationship with the concentration of magnetic particles concentration in ferro-oil being potential lubricant above-mentioned bearings. In this paper, the authors present the characteristic of experimental test benches to determine the coefficients of the magnetic susceptibility. They present method of determining this value from obtained measurement data and analyse the impact of the magnetic particles concentration in ferro-oil on its magnetic susceptibility values. Tests were performed for selected concentrations of magnetic particles in ferro-oil ranging: 2%, 4%, 6% and 8% and the tested ferro-oil was product from Unterensingen FerroTec Company (Germany) which is a mixture of colloidal mineral engine oil LongLife Gold Penzzoil class SAE 15W-40 with addition of Fe3O4 magnetic particles and a surfactant.

Słowa kluczowe

EN

ferro-oil; magnetic particles concentration; magnetic susceptibility coefficient

• 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: 2014
• Tom: Vol. 21, No. 4
• Strony: 111--117
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Frycz M.

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

autor

Anioł A.

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

Bibliografia

• [1] Frycz, M., Anioł, P., Temperature distribution In the gap of sidle journal bearings lubricated with ferrofluids for different concentration of magnetic particles, Zeszyty Naukowe Akademii Morskiej, Vol. 81, pp. 38-54, 2013.
• [2] Frycz, M., Parametry eksploatacyjne poprzecznych łożysk ślizgowych smarowanych ferrocieczą o różnym stężeniu cząstek magnetycznych, Zeszyty Naukowe Akademii Morskiej, Vol.71, s. 49-62, 2011.
• [3] Frycz, M., Miszczak, A., Wzdłużne pole magnetyczne w szczelinie poprzecznego łożyska ślizgowego, Tribologia, Nr 6, s. 77-86, 2011.
• [4] Jianmei, W., Jianfeng, K., Yanjuan, Z., Xunjie H., Viscosity monitoring and control on oil film bearing lubrication with ferrofluids, Tribology International 75, pp. 61-68, 2014.
• [5] Kazimierska-Drobny, K., Konop, J., Nowak B., Ferrociecze. Propagacja fal ultradźwiękowych w nasyconym ferro-cieczą miekkim magnetycznie materiale porowatym, praca badawcza pod kierunkiem prof. Kubika J. w ramach Kursu Eksperckiego Smart-Technology Export School, Bydgoszcz.
• [6] Miszczak, A., Analiza hydrodynamicznego smarowania ferrocieczą poprzecznych łożysk ślizgowych, Akademia Morska w Gdyni, Gdynia 2006.
• [7] Odenbach, S., Magnetoviscous Effects in Ferrofluids, Springer, Germany 2013.
• [8] Rosensweig, R., E., Ferrohydrodynamics, Dover Publications INC, Mineola, New York 1997.
• [9] Skumiel, A., Łabowski, M., Józefczak, A., The measurements of anisotropy of ultrasound propagation and magnetic susceptibility in viscous ferrofluid, Ultrasonics, No. 40, pp. 341-344, 2002.