Bosakov S. V., Semenyuk S. D.
Studies of the performance of spatial sections of reinforced concrete foundations from crossed strips of the rectanquiar section. pp. 5--11
Summary: Spatial reinforced concrete foundations for buildings and structures are considered here as a system of crossed beams on the arbitrary soil base. The statistical calculation of such systems taking into account the torsion is made by Zhemochkin method. The performance of foundation beams of rectangular section was studied for lateral bending with torsion at the stage of elasticity for different cases of force combinations. The methodology for determining of the supporting power of reinforced concrete foundation beams with the co-action of torsional and bending moments as well as with the co-action of the torsional moment and the lateral force is given. The practical method for estimation of spatial sections of reinforced concrete foundations is offered.
Gorbatsevich G. N., Rogacheva N. A.
Modeling stress-deformed state of the finite thickness plane from fibrous composite under symmetrical loading. pp. 12--15
Summary: Stress-deformed state of the finite thickness plane included continuous parallel fiber under normal static distribute load is investigated. A mathematics model of the boundary problem and results of numerical calculations for different types of fiber orientation in the plane are proposed.
Miklashevich I. A.
Group properties of deformation and procedure of introduction of gauge fields. pp. 16--19
Summary: Processes of deformation of real bodies are considered as a set of operators acting in linear space from geometrical point of view. The requirement of reversibility of the process gives the possibility to find symmetry group for introduced operators. Symmetry conditions for gauge fields are studied. It is shown that proposed group is determine Finslerian space.
Orlov S. A.
Temperature variable bending of sandwich ring shaped plate. pp. 20--24
Summary: On base of the theory of small elastic plastic deformation a formulation of boundary problem of temperature variable bending of sandwich ring shaped plate is offered. Analytical decision is received in iterations. Numeric realization of solution is made.
Tolstoy A. V., Pushkin S. O.
Increasing of longevity of internal linkages pumps during them restoring repair. pp. 25--28
Summary: The constructive solutions allowing increasing longevity of pumps of an interior hitch at the expense of magnification stiffness of a construction of the pump by change of the plan of a loading of a curl with console on designed two-basic.
CALCULATIONS AND MODELLING
Kurochka C. S.
Numerical modeling of deformations of a volumetric fragment of a frame building. pp. 29--32
Summary: In the given work is described the algorithm, on the basis of the finite elements method, for numerical modeling of deformations of a volumetric fragment of a frame building, which is considered as uniform spatial system.
Selivonchik N. V., Bobarikin Yu. L.
Criterion of obtaining coating-base joint by indirect extrusion cladding. pp. 33--37
Summary: The criterion of obtaining a joint between the cladding coating and the base being coated by indirect extrusion cladding is elaborated and investigated here (in this paper). The criterion is achieved by the variation of the process parameters and allows to increase the efficiency of the process of cladding.
Shevchenko D. N.
Model for research reliability reconfiguration systems with restore components. pp. 38--41
Summary: Methods of estimation reliability complex technical systems propose. He makes a simulation model in basis of statistical modeling. Common approach for formation model of system expounds. Computer-aided means for formation and research of model propose. Results of approbation this means and methods considers by reliability research of some systems.
MATERIALS
Burya A. I., Kozlov G. V., Lipatov Yu. S.
The influence of particles filler aggregation on volume inter phases of a layer in polymeric composites. pp. 42--44
Summary: The share inter phases of a layer in composites (polyhydroxy ester, polyarilate fiber glass) with the help continual and fractal of the approaches is appreciated. Is shown, that the aggregation of particles filler irrespective of its type reduces a relative share inter phases of a layer
Maiko L. P., Tsaryuk T. Ya., Konstantinov V. G., Drebenkova I. V., Falyushina I. P.
Alternative protective components to inhibit mineral oils. pp. 45--49
Summary: The produced by the republic's industry assortment of alternative protective components to inhibit mineral oils has been determined, the physical-chemical and functional properties of these components have been investigated and their classification on individual and complex indices of efficiency has been carried out. On the basic of the optimal combination of the alternative protective components of various action mechanism a combine corrosion inhibitor has been developed, allowing to create conservation oil of equal value to the efficiency of the best foreign analogues.
Mironovich L. L., Gartman E. V., Lin D. G., Vorobyeva E. V.
To the problem of modification of coatings based on dispersed polyethyleneterephthalate. pp. 50--52
Summary: Using the differential thermal analysis the efficiency of stabilizing effect of thermal stabilizers of amine and phenolic types as well as aromatic and bis-bicycloamide acid that inhibit thermal oxidation and destruction processes has been investigated at coating production based on cryogenic dispersed polyethylene terephthalate (PETP). Physico-mechanical and adhesive properties of the coatings have been determined.
Struk V. A., Rogachev A. V., Skaskevich A. A., Holodilov O. V., Lyuty M.
Nanomaterials and nanotechnology for engineering (re view). pp. 53--65
Summary: The problem condition of creation and using of nanocomposition materials in engineering was studied. Particularities of producing technology of nanocomposites and teamplay its structure with main characteristics of materials were shown
Khalapsina T. I., Zlotnikov I. I., Smurugov V. A.
Complex sodium soap based on tar and fat wastes as thickener for greases. pp. 66--68
Summary: New soapy thickener for high temperature greases based on wastes of fats industry has been developed Technology of tar-fat blends saponification and production of complex sodium soap are presented. Bulk mechanical and lubricating properties of oils thickened by developed complex sodium soap are studied.
TECHNOLOGIES
Klubovich V. V., Tsarenko Yu. V., Rubanick V. V., Bobrov V. P., Telepnev S. N.
Ultrasonic production process of cables in metallical shells. pp. 69--72
Summary: The process of covering the powder isolation and wire-drawing the heat-resistant and thermocouple cables with mineral isolation in metal jacket with use of ultrasound oscillations of different directions and intensity was studied. It was ascertained that the ultrasound application in the process of producing the cables with mineral isolation allows to considerably increase the single reductions at Wire-drawing and by the same to shorten the quantity of operations on thermal processing. Besides, the use of ultrasound at wire-drawing and further refining the surface before thermal processing allows to refuse from applying the expensive and ecotogically unsafe greases.
Kudina E. F., Tyurina S. I., Kushnerov D. N.
Effect of preliminary treatment of metals surface on adhesive and mechanical strength of multilayered materials. pp. 73--77
Summary: Technological principles of producing layered metal-polymer materials based on polymer binders, aramide fabric and metal plates have been studied. Interrelation between type of surface metal treatment, adhesive properties at the metal-plastics interface and multilayer material characteristics has been determined. Maximum adhesion value was found when polysulfone was used as a binder and superhigh modulus fibers as a reinforcing material. Preliminary treatment of metal surface (microarc oxidation and chemical treatment for aluminum and mechanical and chemical treatment for titanium) was established to raise adhesive strength 2 to 4 times.
Mamedov A. T., Mamedov V. A., Aliyev A. G.
Interrelationship of between components of the composition and their characteristics with structure and properties of iron - based sintered material. pp. 78--82
Summary: The iron-base Ni-Cr alloys containing cast iron shaving wastes produced via conventional pressing - sintering technology were investigated. The influence of Ni-Cr and cast-iron contents and the technological variables such as their particle size on the mechanical properties of sintered specimens was studied. Increasing the Ni-Cr content from 0 to 4.5 w/o exhibit a positive effect on the mechanical properties, however further increasing the Ni-Cr in the composition to 6.0 w/o reduces the final properties. The highest mechanical properties were observed at Ni-Cr and Cast-iron particle sizes of 100-160 and 63-100 mm respectively. The microstructural analyses revealed, that the microstructure ofsintered materials structure is heterogeneous and more affected by Ni-Cr powder content in the composition.
Pankov V. V., Kunitskii L. I.
Physicochemical synthesis peculiarities of ferrite powders used in manufacturing products in form of chip elements. pp. 83--87
Summary: Ni-Zn-Cu ferrite powders used in production of chip elements for electonic industry were prepared by coprecipitation and zol-gel methods. It was established that the increase of Cu content leads to the increase in material density, thus initial magnetic permeability is improved. It was shown, that magnetic charateristics of the produced material depend significantly on the its microstructure, in particular, on the grain size. Influence of V2O5, Bi2O3, BaWO4, WO3, NH4MoO4 additions on the sintering process was analyzed.
Tolochko N. K., Arshinov M. K.
Fabrication of components for micromechanical systems based on laser sintering of powder micromolding. pp. 88--93
Summary: Modern state and prospects in developing micromechanical systems are dwelt upon. A brief review is presented on the progress of anew direction in designing micromechanical components by laser sintering of preliminary micromolded powders.
INSTRUMENTS AND TEST METHODS
Andreiko S. S., Shcherba V. Ya., Prushak V. Ya.
Methods of local prognosis of gush-dangerous zones. pp. 94--97
Summary: Methods of local prognosis of gush-dangerous zones are developed for mine fields of potassium pits. The methods have been industrially tested at the third potassium level of "Belaruskalii" pits when examining over 40 km of openings. The tests have shown high resolution, reliability and technological simplicity of the method.
Klimovich L. N.
Contactless strain gage for torque and rotation frequency measurement. pp. 98--101
Summary: Torque gages capable of durable operation in friction joints of machines are analyzed in the paper. I he basic requirements to their design are formulated. A block diagram of the contactless strain gage for measuring torque and rotation frequency is presented.
Prushak V. Ya., Shcherba V. Ya., Andreiko S. S.
A method for controlling gas-dynamic processes in the zones of geological danger. pp. 102--105
Summary: A method for local control of gas-dynamic processes in conditions when the face crosses outburst hazard zones is described. It's shown that the intensity of man-made outbursts of salt and gas can be controlled by employing a cylindrical cut advance with less than 1 m2 cross-section and three retardation stages.
ECONOMIC OF INDUSTRIAL PRODUCTION
Prushak N. V.
Structurization of aims and directions of the policy at a mine-chemical company on the example of RUP PA "Belaruskalyi". pp. 106--110
Summary: Organization management structures are considered that have features different from the traditional line-functional and other families of organization management structures. Aims have been determined at formation of the structure and structural reorganization of RUP PA "Belaruskaly".
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Designed and maintained by Dr. Nikolai N. Kostyukovich. Last update January 30, 2003
Created with assistance of Dr. Ignatii I. Korsak
Copyright © 2003 The National Academy of Sciences of Belarus
Copyright © 2002 Materialy. Tekhnologii. Instrumenty
