Известия Академии наук Беларуси. Сер. физ.-техн. наук, 1997, No.1
/ Издания академии / Научные журналы
Известия Академии наук Беларуси. Сер. физ.-техн. наук, 1997, No.1
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Известия Академии наук Беларуси
СЕРИЯ ФИЗИКО-ТЕХНИЧЕСКИХ НАУКИздатель: Беларуская навука, Минск, Республика Беларусь
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Номер 1, 1997
СОДЕРЖАНИЕ
МАТЕРИАЛОВЕДЕНИЕ
Tolstoi A.V., Shipko A.A., Kukareko V.A.
On a role of a crystal structure of Co-powders in formation of their technological properties. pp. 3--7
Summary: By methods of X-ray analysis the crystal structure of Co-powder of various consignments was investigated. It was established, that the investigated powders represent a mix of two crystal updatings of cobalt -- alpha and beta, and the contents of alpha-cobalt in a material depending on consignment can change from 10 to 90%.
Panteleenko F.I., Konstantinov V.M.
Peculiarities of diffusion processes under борировании of steel powders. pp. 8--11
Summary: It was investigated chemical-thermal treatment of self-fluxing powders of various steeles. Peculiarities of diffusion processes are established: modification of alloying kinetics; change of physical and mechanical propertes; change of powder's size; modification of powder's structure. Further reseaches in that sphere will permit to synthesize powderes of pseudoalloes.
Shut V.N.
Pb5Ge3O11 glass-ceramic. pp. 12--15
Summary: Fine-grained Pb5Ge3O11 glass-ceramic have been prepared by laser annealing treatment using CO2 laser. The polar c axes of the crystallites were mainly oriented parallel to temperature gradient and perpendicular to the sample surface.
Ipatov A.P., Belskaya E.A., Kerko P.F., Pavlyukovich P.A., Rytvinskaya E.V., Kopets Z.V.
Some features of interaction of nuclear fuel UO2 with silicate melts. pp. 16--18
Summary: Summarized results of the experimental investigations of uranium dioxide interaction with the melts of multicomponent silicate oxide systems SiO2 -- CaO -- Al2O3 -- Na2O in a wide range of basicity are presented.
Shapovalov V.M.
О механизме формирования пластифицированных граничных слоев в высоконаполненных экструзионных древесно-полимерных композитах. pp. 19--22
Summary: On the example of high-filled extrusion wood-polymer composites the effectivity of boundary plastification for system wood-thermoplastic was shown. That provides both high processability of the composites at manufacturing articles of them and their high-level physico-mechanical characteristics. The mechanism of plastisized boundary layers formation by way of directed redistribution of preliminary introduced into the wood plastisizing agent under the effect of thermal and strain fields at extrusion was revealed.
Zaborskaya L.V., Pashinskaya V.A., Yurkevich O.R.
Properties mechanically crushed polyethyleneterephtalate and coverings on its. pp. 23--27
Summary: The properties of the polyethyleneterephtalate (PET) in powder form and PET coatings which was maked by the powder technology was studied.
Detsuk V.S.
Study of influence of fenolsilicate on structure and properties alifatic polyamids. pp. 28--31
Summary: It is reported the results of the reseuch into the process of the modification of the alifatic polyamids by fenolformaldegid by silicate of polyvalent metall. It is shown that the influence of the fenolformaldegid silicate as a modificator on the poliamid is resulted in the formation of intermolecular between polyamidom fenolsilicatom and in the size's modification of the crystals and the degree of their regulation.
Shcherba V.Ya.
Chemical modifying of abrasive наполнителя as a method to increase its adhesive ability to polymeric binding. pp. 32--34
Summary: Silicon carbide appear to be most widely used in making tools containing abrasives. Silicon carbide is a chemically inert compaund having a low bonding strength to the binder. It was of interest to investigate the composition gaseous products produced by thermolysis of silicon carbide. Adsorption of low-molecular weight products of polycondensation was investigated. The thickness of chemically modified layer was estimated.
НАДЕЖНОСТЬ И ДОЛГОВЕЧНОСТЬ МАШИН
Gritskevich V.V.
System methods of designing of boxes of transfers on the basis of the multilevel block diagrams. pp. 35--41
Summary: The system methods are based on possible taking into consideration of whole factors to design and give the possibility to solve the problem at high scientific-technical level. The analysis and synthesis of gearboxes are based on employment of many-level structure schemes which are built at hierarchical principle. Thanks to this the unified approach to synthesis of stepped and variable ratio gearboxes with arbitrary number of steps is achieved.
ТЕХНОЛОГИЯ МАШИНОСТРОЕНИЯ
Yashcheritsyn P, I., Zabavsky M.T., Kozhuro L.M., Kheifets M, L.
Increase of efficiency of processing износостойких coverings by rational orientation diamond and abrasive grains of tools. I. Diamond grindings. pp. 42--45
Summary: Heat processes, strained condition and quality of surface layer of parts with wear resistance facing, which treatmented by diamond circle with orientatent corns on porous bunch have been examined.
Denisov L.S., Zankovets P.V.
Economic-mathematical model of management and optimization of quality of welding works. pp. 46--50
Summary: In the article the reasons of defect welding Formation are investigated. The dominant factors, rendering influence to formation of defects, are considered. Economic mathematical model of quality management of welding work is offered.
Klubovich V.V., Rubanik V.V., Tsarenko Yu.V.
High-speed electrothermal processing of a composite material. pp. 51--54
Summary: It is shown that the application on drawing of a thermostable cable in mineral isolations as well as a wire of nickel and stainless steel perming to increase single reductions and decrease annealing temperature of wire and cable of electrocontakt heating for a pass.
Starikov S.V., Bogdanovich P.N., Prushak V.Ya.
Influence of parameter of sensitivity to speed of deformation on development of defects in plastic materials. pp. 55--61
Summary: The influence of the deformation velocity sensitivity parameter has been investigated on the possibility and the direction of growth of non-solidity defects in plastic materials.Critical values of this parameter have been obtained. Materials have been classified on the basis of their ability to large plastic deformation.
Kozhuro L.M., Shchukin V.S., Khilko D.N., Kozhuro S.L., Shaduya V.L.
Physical-mechanical and operational properties of coverings received by electromagnetic smelt. pp. 62--69
Summary: The article shows properties covers are mode electromagnetic smelt and the dependence physico-mechanical properties during abraso-mechanic processing. The optimal process are defined.
РАДИОЭЛЕКТРОНИКА И ПРИБОРОСТРОЕНИЕ
Voropaev Yu.P., Noskov V.V., Sidorenko S.T., Nikipelov D.N.
The characteristics and parameters of a field of dispersion of minimally disseminating antennas. pp. 70--78
Summary: Formulas and the estimation of the properties of minimum scattering antenna scattered field accordind to their antenna pattern are given.
ТЕХНИЧЕСКАЯ КИБЕРНЕТИКА
Zjoma T.G., Yarmosh N.A.
Formal methods of representation of knowledge in intellectual artificial systems. pp. 79--85
Summary: Some useful formal methods of natural language text processing and knowledge representation in artificial intelligence systems are suggested.
Samoshkin M.A.
Mathematical modeling of processes for automation of reading of the graphic information and nonlinear filtration of video signals. pp. 86--91
Summary: The methods and analytical meanings fos the elaborating of the processes of the input of the graphical data with the controlled choice of the step are proposed. The mathematical models of the optimal non-linear filtration of the videosignals according of the maximum signal/noise ratio criteria & of the optical contrast are made.
Makhanek M.M.
Parallel realization of standard genetic algorithm. pp. 92--103
Summary: The problem of parallel genetic algorithms (GAs) realization is considered. The principles of a multiprocessing system organization are suggested for fast execution of logical operations dominating arithmetical ones in the system. It is shown what facilities must be implemented in the system to speed up execution of GAs.
Kartsev V.T.
About increasing the speed of performance of circular interpolation. pp. 104--107
Summary: In the paper a way of increase of speed of execution of circular interpolation is suggested.
МЕХАНИКА
Bosakov S.V.
Calculation of plates on a powerful half-plane. pp. 108--114
Summary: Using Zemochkin's method in paper is solved the contact problem for road in elastic half plane with mass forces.
Vantsevich V.V., Vysotsky M.S., Kharitonchik S.V.
Features качения of a wheel with the adjustable tractive-power characteristics. pp. 115--120
Summary: The control problem of wheel tractive-power characteristics has been formulated by means of wheel breaking under the slip of the wheel during its acceleration motion at deteriorarted road adhesion conditions. A way of the control has been offered. Using the way, the given functional dependence between speed and acceleration of the wheel and the top of its energy efficiency can be provided. The analytical functions have been deduced, the investigations and calculations have been carried out. They have confirmed the efficiency of the method proposed.
THERMOPHYSICS, POWER ENERGETICS, THERMO- AND MASS TRANSFER
Bairashevsky B.A.
Analyses on heat efficiency operation of heatpipe grids. pp. 121--129
Summary: A method of each factor analyses on heat efficiency operation of heatpipe grids is developed. New formulae that can be helful for making software at practical use on a on-line computer is worked out.
АННОТАЦИИ ДЕПОНИРОВАННЫХ СТАТЕЙ
Vasilevich Yu.V., Murach V.A.
Исследование эффективности виброзащиты тоннеля метрополитена подшпальными амортизаторами. p. 130
Lyubetsky N.V., Maksimovich E.S.
Use of a method of polarizing interferometry for the control of composite materials. pp. 130--131
Maksimovich E.S., Tikhanovich S.A.
Use of a radiowave method for control of uniformity superficial заполнителей. p. 131
Ibragimov V.A., Makhnach V.A., Shved O.L.
The account of effect of a heredity in determining the ratio of elastoviscoplasticity. pp. 131-131
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Designed and maintained by Dr. Nikolai N. Kostyukovich. Last updated: January 31, 1998
Created with assistance of Dr. Ignatii I. Korsak
Copyright © 1997, 1998 The National Academy of Sciences of Belarus
Copyright © 1997 The Belaruskaya Navuka Publishing House
