Трение и износ, 2004, Vol.25, No.6
/ Издания академии / Научные журналы
Трение и износ, 2004, Vol.25, No.6
Том 25, номер 6; ноябрь-декабрь, 2004
СОДЕРЖАНИЕ
СТАТЬИ
Akhverdiev K.S., and Zhurba I.A.
Steady-state motion of a viscoelastic liquid between a tilt slider and a guide consistent with the lubricant inertia forces. pp. 567--576.
Summary: The authors present an asymptotic solution of the problem on a steady state motion of a viscoelastic lubricating fluid between a slider and a guide with account of its nonlinear effects. The chief service characteristics of the system are defined based on the proposed calculation method. The numerical results of obtained analytic dependencies are presented for the limiting loads at different b values that characterize viscoelastic properties of the lubricant, and the slope angle tangent of the tilt slider relative to the guide.
Matysiak S., Yevtushenko A., and Kutsei M.
Non-stationary heating of a uniform foundation with a surface composite layer. pp. 577--584.
Summary: The non-stationary temperature brought about by a uniform heating of a free composite layer surface applied on a homogeneous base is studied as a function of the geometrical and thermophysical properties of the layer constituents.
Balakin V.A., Sergienko V.P., Zabolotsky M.M., Kupreev A.V., and Lysenok Yu.V.
Thermal design of a multidisc oil-cooled brake. pp. 585--592.
Summary: The problems of friction-induced heat generation and transfer in the multidisc oil-cooled brake are analyzed. The authors present the formulas to calculate the mean surface temperature increment in the rubbing bodies and cooling medium (oil) in the course of braking. It's proposed to define the braking path of heavy haulers fit with multidisc oil-cooled brakes during slow down by the method derived.
Vityaz P.A., Levantsevich M.A., Maximchenko N.N., Bodrykh T.I., and Stepanova L.I.
Triboengineering properties of fine metal coatings with nanofillers. pp. 593--601.
Summary: The results of triboenginering tests of the fine metallic coatings reinforced by the nanoscale fillers of tungsten trioxide, graphite and ultradispersed detonation-synthesized diamonds (UDD) are presented. The coatings are formed by the deformation cladding using flexible tools and electroplating. The coatings formed of two-layer compositions (copper + UDD, composite + graphite) using flexible tools and by electroplating (nickel + tungsten trioxide, nickel) show advantages at friction of quenched ShHIS steel over a coated 08kp steel disc under the starvation lubrication and a 7 m/s sliding velocity. In contrast to the uncoated samples the compositions reduce the friction coefficient 2 till 2.5 times and increase the bearing capacity 2.2 till 2.3 times, and the pv factor from 14.6 up to 37 MPa-m/s.
Markova L.V., Myshkin N.K., Makarenko V.M., Semenyuk M.S., Kong H., Han H-G., and Yun E-S.
Water content control in lubricants as a means of tribodiagnostics. pp. 602--611.
Summary: The effect of water content in a lubricant on its qualitative parameters intrinsic for the tribosystem lifespan has been analyzed. Tough requirements to service characteristics of lubricating oils have stirred the activity in developing new methods and means of monitoring water content. The water content control devices in lubricants incorporating sensors to measure permittivity, conductivity and optical properties of oils are reviewed. To raise the reliability and adequacy of the readings it seems expedient to create the devices based on advanced techniques and elemental basis.
Dubravin A.M.
The choice of optimum scanning probe microscopy regimes and phase image interpretation as applied to frictional surfaces. pp. 612--623.
Summary: The effect of both bulk and surface properties of the samples as well as their friction-modified layer thicknesses on the probe-sample approach and phase values was analyzed for a short-term contact regime by the numerical simulation method. It's shown that for a given regime the phase conforms to the force coinciding with the maximum approach during oscillations of the cantilever. A vector diagram is presented to explain the phase shear mechanism for various conservative to dissipative force ratios in the system. It illustrates a conclusion that the bulk friction influences the phase contrast formation mechanism. Based on the numerical method the approach value function vs the dynamic system parameters was derived to make the preliminary accuracy estimates. The maximum interaction force within the probe-sample system was found to depend upon the force microsensor parameters, and the ample properties. The dependence can be used to forecast the system state.
Kuzharov A.S., Burlakova V.E., Kravchik K., and Kucherenkov A.A.
The tribochemistry of selective transfer. Investigation of triboelectricity in the systems bronze--glycerin--steel and steel--glycerin--niobium. pp. 624--634.
Summary: The tribological and electrochemical behavior of the systems bronze--glycerin--steel and steel--glycerin--niobium has been studied. A relationship is shown between the electric current and friction coefficient as a function of the tribojoint metals nature under various friction regimes.
Kicha G.P., Perminov B.N., Nadezhkin A.V., and Zavadsky S.A.
Wear simulation of vessel trunk-piston diesels using unified motor oils. pp. 635--641.
Summary: Friction properties of the oils for vessel diesels have been estimated on a motor test bench at combustion of different-fraction and composition fuels. The test results are summarized in the form of a generalized wear model of an internal combustion engine during operation. The model optimizes the diesel--fuel--oil system by the wear criterion aimed at the choice of a motor oil meeting the requirements of the diesel and fuel used.
Malyshev V.N.
The ceramic layer damage and failure during friction of microarc-oxidized coatings. pp. 642--649.
Summary: The paper deals with the problems of initiated by wear damaging and breakage of ceramic coatings formed by the microarc oxidation method. Breakage of the coatings at friction has been analyzed from the viewpoint of the fatigue wear theory, synergetics and the concept of damageability. The causes and conditions of the ceramic layer damaging are disclosed. Based on the analysis, a 8 criterion is proposed for estimation of the tribological system damageability, which presents a non-dimensional thermodynamic parameter relating the entropy generation rate in a critical state to the current one.
Mulin Yu.L, Verkhoturov A.D., Klimova L.A., and Vlasenko V.D.
Investigation of discontinuous wear resistant coatings formed by spark alloying. pp. 650--655.
Summary: The paper deals with the problems of initiated by wear damaging and breakage of ceramic coatings formed by the microarc oxidation method. Breakage of the coatings at friction has been analyzed from the viewpoint of the fatigue wear theory, synergetics and the concept of damageability. The causes and conditions of the ceramic layer damaging are disclosed. Based on the analysis, a 8 criterion is proposed for estimation of the tribological system damageability, which presents a non-dimensional thermodynamic parameter relating the entropy generation rate in a critical state to the current one.
Gurchenko P.S., Tolstoi A.V., and Shipko A.A.
Triboengineering characteristics of the profilecomposite pinion material subjected to surface-volumetric hardening. pp. 656--660.
Summary: The structure and triboengineering characteristics of pinion materials have been studied after the surface-volumetric hardening (SVH). The wear resistance of 60PP steel subjected to SVH was found to be on a par with that of 20HNZA grade after carburizing. The conclusions meet the bench and road test results.
ХРОНИКА. pp. 661--662.
ЛЮДИ НАУКИ
Alexander P. Krasnov (70 years since birthday). pp. 663--664.
КАЛЕНДАРЬ КОНФЕРЕНЦИЙ. p. 665
Contents of volume 25 (January--December 2004). pp. 666--670.
Authors index of volume 25, No 1--6. p. 670
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Designed and maintained by Dr. Nikolai N. Kostyukovich. Last updated: April 5, 2005
Created with assistance of Dr. Ignatii I. Korsak
Copyright © 2004, 2005 The National Academy of Sciences of Belarus
Copyright © 2004 The V.A.Biely Institute of Mechanics of Metal-Polymer Systems
