Trenie i Iznos (Friction and Wear), 1998, Vol.19, No.1
/ Publications / Scientific Journals
Trenie i Iznos (Friction and Wear), 1998, Vol.19, No.1
Volume 19, Number 1; January--February, 1998
CONTENTS
ARTICLES
Sviridenok A.I.
Development trends of tribology in the countries of former USSR (1990--1997). pp. 5--16
Summary: On the basis of the analysis of the publications in a period from 1990 to 1997 the state of tribology in the countries of former USSR is shown. The perspective directions of fundamental research and applied development in two basic tribological directions are considered.
Yevtushenko A.A., Ivanik E.G., Kovalenko E.V.
Nonstationary frictional heating of elastic rough body. pp. 17--25
Summary: The quasistatic thermoelastic problem for half-space which is heated in a circular region by nonstationary frictional heat source is considered. Temperature field and thermoelastic sterss state are examined as functions of surface roughness parameters and heating duration when the body moves with constant deceleration.
Moiseeva T.M., Kholodilov O.V.
Methodology of creating classification criteria of rubbing joint friction state based on multistage statistical analysis. Part 1. Surface morphology. pp. 26--34
Summary: The procedure of using factor, canonic correlation and discriminant analyses is discussed aimed at criteria for estimating physico-mechanical state of rough surfaces. The proposed "statistic tecnique" is shown to assist the creation of classifying associations enabling identification of tribological joint state by morphological characteristics of interacting surfaces and junction conditions.
Chulkinn S.G.
Estimation of a resistance to wear of gear trains by power criterion. Part 1. pp. 35--39
Summary: Based on power approach, mathematical model of wear is advanced as a channel which absorbs and transfers flow of external energy. It is shown that new power criterion and its variants would be appropriate for Use in service life estimation of gear trains. This criterion involves phisico-mechanical characteristics of mating materials with consideration for their fracture mechanism.
Balakin V.A., Kenko V.M.
The harnessing of frictional heating in local forming of thin-wall sections by plastic metal working. pp. 40--49
Summary: Of importance in local forming of thin-wall section by plastic metal working is frictional heating condition of wall material. Calculation technique of heat of beta and mass transfer is developed. The contact temperature is shown to attain the melt temperature of the wall. Profile of tool, its rotational speed and feed are of great concern.
Nazarov A.D.
Development of the optimum method to determine of total unbalanced mass of crank parts for increasing and decreasing of vibration and noise of engines. pp. 50--60
Summary: The optimum method is proposed to determine the limiting values of permissible total unbalanced mass of crank parts. Thes disbalance is caused by deviation of crank parts from their nominal sizes, lasquer and gum formed on piston with rings, and accumulation of wear debris and mud in space of crankpins. It is shown that to determine the masses we need only have knowledge of permissible disbalances in planes of flywheel and pulley of engine crankshaft. Using this method we estimate permissible values of the unbalanced masses for V-8 engines.
Shaginyan A.S., Bolotskii V.V.
Determination of friction coefficient and stiffness in control valves of hydraulic boosters at hydrodynamic lubrication. pp. 61--66
Summary: A technique is advanced to calculate hydrodynamic forces acting on the control valve of hydraulic booster. The technique is based on measured values of resonance characteristics of the valve.
Chuprynin Yu.V.
Study of dynamics of friction clutches in tractors. pp. 67--70
Summary: Dynamic model of friction clutch with smooth engagement is examined in an effort to study power drives by numerical methods. By way of example transmission operation is modeled at various transient conditions.
Adrianova O.A., Popov S.N., Shitz E.Yu.
Prospect of creating the diamond tools with self-lubricated polymers and diamond powders. pp. 71--74
Summary: Tribotechnical properties of composites based on polytetrafluoroethylene (PTFE) with ultradispeised diamond powders and natural technical diamond powders have been investigated. It was established that using the natural diamond powders as abrasive material in diamond tools gives essential improvement in abrasive abilities of materials. The investigation of friction against steel and different minerals has shown that the using of natural diamond powders in PTFE composition very perspective for polishing of different stones, metals and etc.
Astashkevich B.M.
Properties and kinetics of second-structure formation on surface of friction phosphorus cast iron for railway transport brake shoes. pp. 75--85
Summary: Tribology properties of phosphorus cast iron for railway transport was investigated. The influence of chemical composition and initial microstructure on kinetics of second-structure formation during friction was demonstrated.
Kuzharov A.S., Burlakova V.Ye., Marchak R., Zadoshenko E.G., Savenkov I.N.
Triboelectrochemistry of the "wearless" effect. The friction influence on the electrochemical characteristics of the frictional contact in the primary stage of the "wearless" effect. pp. 86--89
Summary: The investigations of the evolution of the stationary potential of the friction surface under the transition of the system "brass-glycerin-steel" in the regime of the "wearless" effect were carried out. The change of the stationary potential may be connected with formation and persistent change of a structures and properties of the surface layers, with alternation of "activation-passivation" cycles during a corrosion processes under friction and with autocatalytic "avalanche" mechanism of the formation servovit film on the friction surface. The results show on necessity to take into account the electrochemical characteristics of the frictional contact for discussion of the self-organization mechanism at friction.
Krasnov A.P., Said-Galiyev Ye.E, Nikitin L.N., Afonicheva O.V., Volkov I.O., Popov V.K., Bagratishvili V.N., Aliev A.D.
Friction and wear of the polyarylate impregnated by Cu-hexafluoroacetylacetonate in supercritical CO2-solution. pp. 90--96
Summary: The technique of supercritical CO2 solution of Cu-hexafluoroacetylacetonate diffusion into the polyarylate bulk specimen was used for the first time to develope the wear resistant materials. Their subsequent heat treatment makes a porous surface layer saturated with metal particles (metall-polymer nanocomposite). Such surface is characterized by high microhardness and wear resistance.
Pogosyan A.K., Oganesyan K.V., Karapetyan A.N., Bagdasaryan A.Ye.
Antifriction composite polymer materials based on the copolymer of formaldehyde. pp. 97--103
Summary: The essential influence of the type and quality of modified mineral fillers as also of the sizes of their particles on the tribological and technological properties of composite materials was established. In the conditions of nonlubricated friction the ways of practical realization of the friction transfer phenomena in metal-polymer tribosystem were revealed for the purposeful creation of new wear-resistant antifriction materials based on the copolymer of formaldehyde, filled with modified mineral fillers (travertine, bentonite).
Prushak V.Ya., Kuzmenkova E.I.
The influence of the powder filler structure on the peat-phenol composite wear. pp. 104--107
Summary: The influence of the structure and granularity of the powder filler particles on the process of peat-phenol interaction has been investigated. The main factor of composite structure formation is shown to be related to ratio between nominal and whole particle surface area. The optimal granularity of filler particles is determined.
Shatsov A.A., Smyshlyaeva T.V.
Carbide-steels with structural unstable matrix infiltrated by copper. pp. 108--115
Summary: The technology of production, structure and properties of infiltrated steel-copper pceudo alloys with metastable austenite and additives of titanium carbide are discussed. The optimum contents of TiC makes approximately weight 5% at general content of carbide phase 10--15 vol.% is established. The best wear-resistance relates to materials excluding fracture of carbides at friction, and providing large volume of phase transition on a contact surface.
Shelestova V.A., Grakovich P.N.
Tribological changes in surface layer composition of carboplastics filled with PTFE fibres. pp. 116--121
Summary: Structure and composition of carboplastic surface layer filled with PTFE fibres were investigated before and after friction on steel using ESCA, electron and ultrasonic microscopy. Influence of PTFE fibres on tribotechnical and rheological characteristics of composite is examined.
SHORT COMMUNICATIONS
Rastikhin A.V., Gaivoronskii A.T., Gaivoronskii A.A.
Shear stresses of different lubricants under loads exceeding the yield limit of at least one member of couple in contact. pp. 122--123
Summary: Various lubricants have been tested in steel--on--steel and steel--on--hard alloy couples to determine their shear stresses in actuation and motion under contact loads exceeding the yield limit of the material of at least one member of the couple.
HISTORY OF TRIBOLOGY
Khrushchov M.M.†
Development of the science of machinery wear resistance during the Soviet period (1917--1970). pp. 124--136
Summary: In this posthumously published review article written by Prof. M.M. Khrushchov. At the end of sixties he has considered the principal features of the friction and wear science development in USSR as a part of the more general problem of reliability and durability of machines. The state of art in Russia to 1917 and the history of research efforts in the fields of investigation of pincipal wear forms, computational methods and theories, machines and tools for wear testing, wear-resistant materials, and conference activities in Soviet Union have been reviewed. The Appendix contains a chronology of the principal developments in Soviet tribology from 1917 to 1970.
MEN OF SCIENCE
Alexander S. Akhmatov (To 100 years since his Birthday). pp. 137--138
CHRONICLE
I.V. Kragelskii seminar on mechanics of friction. pp. 139--141
CONFERENCE CALENDAR. pp. 142--143
/ Publications / Scientific Journals / Back to Top of Page
Designed and maintained by Dr. Nikolai N. Kostyukovich. Last updated: October 10, 1998
Created with assistance of Dr. Ignatii I. Korsak
Copyright © 1998 The National Academy of Sciences of Belarus
Copyright © 1998 The V.A.Biely Institute of Mechanics of Metal-Polymer Systems
