Известия Академии наук Беларуси. Сер. физ.-техн. наук, 1997, No.3
/ Издания академии / Научные журналы
Известия Академии наук Беларуси. Сер. физ.-техн. наук, 1997, No.3
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Известия Академии наук Беларуси
СЕРИЯ ФИЗИКО-ТЕХНИЧЕСКИХ НАУКИздатель: Беларуская навука, Минск, Республика Беларусь
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Номер 3, 1997
СОДЕРЖАНИЕ
МАТЕРИАЛОВЕДЕНИЕ
Matusevich A.S., Makarova Zh.E.
Contact voltages with solidphase deriving of compositions. pp. 3--6
Summary: With a use of moire effect the experiment field of glide lines has been built, which was used to calculate the values of parameters of the stressed state in fibre-matrix contact points. The epures of normal and tangential stresses distribution on the contact surface are presented.
Fedorov V.D., Koval V.N., Pesetskii S.S.
Dynamic mechanical properties of mixtures of polycarbonate and polyamides 6 with polythene. pp. 7--12
Summary: Free torsional oscillation method has been used to study viscoelastic properties, phase interaction and molecular structure of binary blends based on polyamides and polycarbonate with both initial and modified by LDPE grafting to carboxylic groups. The dynamic shear modules of polycarbonate and polyethylene blends shows to follow Devise's equation. This proves the formation of double-phase continuity blends.
Voroshnin L.G., Voroshnin A.L.
New approaches to creation and use of powder sating media for chemical-thermal handling. pp. 13--17
Summary: It is obvious that according to the data given the article a lot of negative problems of concrete processes of chemical and heat treatment of metal can be completely or partially solved applying scientific method for powder saturation mediums and their pretreatment it concerns such problems as: processing (raising the rate of process, stability of treatment results, exhausting and regeneration of mixtures and etc.); economic (reduction of prices of treatment, substitution of extensive and scarce components of mixtures by cheaper components) and ecological (giving traditional haloid activators up).
Protasenya A.V.
Fire resistance of nonwoven and heatsoundproof materials and modes of its increasing. pp. 18--21
Summary: The paper treats the questions of material development to heatproof vehicles showing high refractory properties, low smoke-formation and toxicity of pyrolysis and friction products. Data are given of investigations in the field of heatproof and modified nonwoven materials creation.
Komarov F.F., Komarov A.A.
Model of thermal picks in application to an appearance of track formation in A3B5 semiconductors under high-energy ionic implantation. pp. 22--25
Summary: In this paper a new model, describing some mechanisms of track formation in InP during implantation of Xe+ ions (M = 131 a.m.u., E = 250 MeV) is proposed. The discussing numerical model enables us with rather good accuracy to calculate some main quantitative parameters of formed latent tracks, such as cross section and extent over depth of the target. The results are analysed and the analysis is followed by the comparison of the data obtained with that of experiment. The mechanism of thermal spikes was chosen by authors as a basis of discussing numerical model.
НАДЕЖНОСТЬ И ДОЛГОВЕЧНОСТЬ МАШИН
Afanas'ev N.I., Goman A.M., D'yachenko O.V.
To the definition of resonance frequencies of work of a mill thin grinding. pp. 26--30
Summary: The results of calculations of resonance frequencies of fine milling mill dynamic model are listed. The two-arms lever installed on suspension is considered as the base units of model. For solution of initial system of differential equations the linearization method is employed. The received dependencies give the possibility to determine the effective working regimes of the mill.
ТЕХНОЛОГИЯ МАШИНОСТРОЕНИЯ
Yashcheritsyn P.I., Makharinskii E.I., Makharinskii Yu.E.
Models of restrictions of efficiency with flat cut-in grinding. pp. 31--34
Summary: Mathematical productivity restriction models of surface cut-in grinding with abundant cooling have been received analytically. These simple models permit to solve the engineering problem of surface cut-in grinding stage control algorithm optimisation. Also they allows to detect boundary control algorithm indicators.
Prushak V. Ya.
The definition of admissible number of drives of manydrive belt conveyors. pp. 35--38
Summary: An original computation of permissible number of drives is suggested which considerably improve reliability of belt conveyers. The analysis of investigations performed helps to considerably reduce load on conveyer belt, increase belt durability, preserve the transported material rating, reduce dust formation.
Klubovich V.V., Sakevich V.N.
The longitudinal-cross oscillations of the rod ultrasonic tool. pp. 39--41
Summary: The natural longitudinal-lateral vibrations of ultrasonic waveguide with attached tool were calculated.
Yashcheritsyn P.I., Sergeyev L.E., Sidorenko M.I.
Development and creation of the tool for magnetic-abrasive machining of orifices because of flexible abrasive brushes. pp. 42--45
Summary: The article learns the research of magnetic-abrasive machining of hard-treated materials. Newly elaborated types of instrument on the basis of flexible brushes which have magnetic and abrasive qualities permit machining of parts made from silicon carbide. The making technology of the present type instrument is given.
Prushak V.Ya., Shcherba V.Ya., Zayats I.M., Sviridov N.V.
Development of two-drive readjustable conveyor with flexible flight and damping idler. pp. 46--50
Summary: A two-drive readjustable conveyer with a flexible flight and damping idler has been developed. A number of technological innovations used in the design reduced considerably its metal-intensity, labor-consumption, cut its cost, but increased life, efficiency and technical resources.
РАДИОЭЛЕКТРОНИКА И ПРИБОРОСТРОЕНИЕ
Matyuk V.F., Strelyukhin A.V.
Evaluation of influence of an inspected product on shaping magnetizing impulses in systems of impulse magnetic monitoring. pp. 51--55
Summary: The change of form of magnetizing pulses because the influence of the article under test is conditioned by the change of inductance of magnetizing system at the cost of magnetic properties of that article. At using the superimposed transducers for local pulse magnetization of articles the influence of the last on the formation of magnetizing pulses can be neglected. For the decreasung of the influence of article under test on the formation of magnetizing pulses using the passing-through transducers one must decrease the cross-section of the test piece relative to the inner section of the solenoid and increase the amplitude of magnetizing pulses, take into account the polarity of solenoids connection when using the two-elements magnetizing systems.
Kundas S. P., Fastovets L. V.
The integrated model of process of ultrasonic плющения of fillets from refractory metals and alloys. pp. 56--63
Summary: Integrated mathematical model of thermophysical and dynamical processes under ultrasonic methods of microplastic metals deformation is designed. This model is base on the principles of complex processes description, conveyer methods of data processing and their through transmission by simulation.
Abramov I.I., Danilyuk A.L.
Model of coherent transport of a charge in a MIS-structure with a thin dielectric at room temperatures. pp. 64--68
Summary:
In the paper the model of coherent charge transport with self-organization for metal -- insulator -- p-type semiconductor structure with the thin insulator at room temperature is proposed.
ТЕХНИЧЕСКАЯ КИБЕРНЕТИКА
Romanyuk G.E.
Singularities of map of areas with bilinear transformation of the equations of discrete systems. pp. 69--74
Summary: A methods for determination of stability of discrete systems are discussed. A method for investigation of stability, based on bilinear transformation, is presented.
Solov'ev V.V.
Realization on PLIS the columns-circuits algorithms with repeated fragments. pp. 75--81
Summary: Method of synthesis of Control Logic Devices (CLDs) under the Flow Charts (FCs), having repeated fragments is considered. The circuit CLD Is offered to build in a kind of two-level network of Microprogramming Automates (MAs). Each MA of the bottom level will be realized on separate PLD. Criterion of expediency of the introduction in the circuit CLD of elements of the second level is resulted. Algorithm of automatic search in FC of repeated fragments is offered, which is reduced to the solution of a grafs izomorfizm problem.
Kartsev V.T.
On a choice of types of standard parallelograms for realization of image decomposition. pp. 82--85
Summary: The problem of selection of the standard parallelograms types for the execution of picture decomposition is considered in the paper.
МЕХАНИКА
Prusova I.V.
On calculation on durability of the flat elements of designs with large locally nonlinear strains. pp. 86--90
Summary: A new method of calculating isotropic plate strength is proposed. The plates are under plane stress assuming that there are large enough zones of nonlinear strains in the vicinity of points with an increased concentration of strains, in the rest of the plates the strains being linear. The main points of the method are presented using uniaxial tension of a plane with an elliptical hole as an example.
Sklyar O.N., Kazakevich V.A.
One-dimensional non-stationary processes in elastic bodies. pp. 91--93
Summary: System of Fredholm integral equations of second kind for one-dimensional non-stationary processes is obtained.
ТЕПЛОФИЗИКА, ТЕПЛОЭНЕРГЕТИКА, ТЕПЛОМАССООБМЕН
Bairashevskii B.A.
Optimization of loadings on power sources in conditions of a simultaneous realization of the purshased electric power. pp. 94--101
Summary: New laws for optimizing electrical loads among power sources with combined production of heat and electricity are found. The investigations can be put into background of certain computer software for making analyses.
Kulilov I.S.
Model of calculation of temperatures and voltages in a rod fuel element nuclear reactor under non-stationary conditions. pp. 102--107
Summary: A mathematical model for the determination of temperatures and stresses in a rod fuel element at non-stationary conditions has been suggested. The model is based on using the method of finite differences when solving heat equations as well as radial movements of the points of the fuel element.
Bairashevskii B. A.
The definition of fuel expendituresog power system, adequate to loadings of each customer separately. pp. 108--115
Summary: Functional dependences that can nominally influence each consumer in growth or lowering the energy source (or power system) on the whole are developed.
Sychevskii V.A.
Investigation of effectiveness of condensation dust- and gas-catching in smoke gases. pp. 116--120
Summary: The paper presents crucial solutions to reduce dust and gas ejections formed by stationary energy sources and methods to reduce such pollution to ecologically permissible levels. Technological methods has been developed to adopt the condensation dust- and gas-catching in industry.
Kuznetsov V.A., Onoshko M.P., Generalova V.A.
Behaviour of radionuclids on territory of western halo of the Chernobyl contamination of landscapes. pp. 121--127
Summary: The main regularities of the distribution and migration of Sr-90, Cs-134,137, Ru-106 and Ce-144 in Pripyat Polesye landscapes, linked with global bomb and accident (Chernobyl AES) precipitations, are considered.
ЯДЕРНАЯ ЭНЕРГЕТИКА
Gorbachev N. V., Sharovarov G. A.
Study of accumulation of yields of division in fuel reactor of the 4-th block of the Chernobyl NPP in before-accident regime. pp. 128--132
Summary: The influence of the 4-th block of the Chernobyl NPP operation on the fission products accumulation during the last day before the accident is investigated. The results of the 650 total fission products radioactivity calculation and its decrease after the accident are presented.
АННОТАЦИИ ДЕПОНИРОВАННЫХ СТАТЕЙ
Kozhuro L.M., Zabavskii M.T., Dymar O.V.
Evaluation of operational properties of porous metal связки of the diamond tool. p. 133
Sadykhov R.Kh., Malenko O.G.
Method of preliminary compression of binary images in systems of a discernment of hand-written numerals. p. 133
Sadykhov R.Kh., Mazurenok D.G.
Models of neurons nets in tasks of a discernment. p. 134
Kozhuro L.M., Khilko D.N.
Tribo-technical characteristics of the electromagnetic coverings. p. 134
Mikhnev V.A., Maksimovich E.S.
Reflectometric monitoring of a structural heterogeneity of composite materials. pp. 134--135
Matyuk V.F., Strelyukhin A.V.
Technique of shaping of impulses of a magnetic field of different duration of the identical form and impulses with different duration of forward and back fronts with the given parameters of a solenoid. p. 135
Kononkov P.T., Kononkov T.T.
Development of nonlinear models, algorithms and programs on optimal control of the system "person -- machine". pp. 135--136
Kononkov P.T., Kononkov T.T.
Perfecting and development of optimize mathematical models, algorithms and programs on synthesis of controlling systems. p. 136
Kononkov P.T., Kononkov T.T.
Development of nonlinear mathematical models, algorithms and programs for a solution of boundary and contact tasks. p. 136
Kononkov P.T., Kononkov T.T.
Perfecting and development of mathematical models and algorithms on optimization of parameters of the dynamic systems "person -- machine". p. 136
УЧЕНЫЕ БЕЛАРУСИ
Ігар Сяргеевіч Цытовіч (Да 80-годдзя з дня нараджэння). С. 137--138
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/ Издания академии / Научные журналы / К началу страницы
Разработана и поддерживается Николаем Н. Костюковичем. Последнее обновление: 10 мая 2008 г.
Создана при участии Игнатия И. Корсака
Копирайт © 1997-2008 Национальная академии наук Беларуси
Копирайт © 1997 Издательство "Беларуская навука"
