Growth dynamics pertaining to country- and industry branch-wise application of additive technologies is presented in the paper. The paper contains application examples of these technologies with a view of rapid manufacturing. Specific concrete recommendations are proposed for quicker introduction of additive manufacturing technologies in domestic industry.

The paper considers a structural flowchart of a typical digital servo system and its operational principle. A method for determination of the unbalanced load effect on the accuracy of the system operation is described in the paper. The paper proposes a method for compensation of the  unbalanced load influence on the system operation. The experimental verification of the unbalanced load effect on the operational accuracy of the servo system and compensation of these influences have been executed in the paper.

The paper describes an investigation of the structure, chemical and phase composition of wear resistance coatings on the basis of  oxide ceramics with inclusions of  solid lubrication.

Powder media for boriding of high saturating capacity have been developed in the paper. Treatment in the powder media has made it possible to obtain diffusion coatings on steel surface which are characterized by higher set  of operational characteristics in comparison with coatings obtained in conventional boriding mixtures. Peculiar features pertaining to formation of the developed coatings have been investigated in the paper.

An expression for determination of contact area of tool and part plane surfaces while being processed according to free lapping method. Calculation of regularities in changes of contact area of lapping segments has been carried out in the case when the upper segment goes over the edge of the bottom one. It is shown that the change of tool diameter can be used as one of the effective parameters while controlling the shaping process of high-precision optical details with plane surfaces (или: (It is shown that change of diameter of the tool can be used as one of the effective parameters in controlling formation process of high-precision optical parts with plane surfaces. It has been substantiated that it is necessary to use bonded tools of minimum thickness in order to reduce overturning moment while abrasive slurry is to be spread on the central area of a part.

 

The paper presents an analysis of  basic models of scanning digital apparatuses for express X-ray diagnostics of injured patients on the basis of full-scan X-ray images. Proposals pertaining to improvement of design and software of digital scanning apparatuses which are designed for operation at traumatology departments.

The concrete samples originate from fracture mechanics tests performed on February 19, 2012, at the Department of Geo-Engineering and Building Materials of the Izhevsk State Technical University.

After the fracture mechanics tests three types of small specimens (marked with CNT, C3 and control sample) have been prepared and tested by means of Nano-Indentation (NI) and Atomic Force Microscopy (AFM), at the Institute for Mechanics of Materials and Structures and Institute of Automation and Control, respectively, of Vienna University of Technology.

Hydrologic conditions that cause the Goryn river floods have been described in the paper. The paper considers engineering solutions pertaining to prevention of catastrophic floodings by bifurcation of maximum river flow while constructing a watershed dike and creating a non-flood polder in the flood plain. The formulas have been developed for calculation of dike slope fixing by dumped riprap when the slopes are subjected to stream impact. The paper provides an analysis of existing dependences for calculation of riprap material size in order to protect slopes against waves. The possible ways for lower cost of fixation while using  waste tyres and also while constructing  small wave-suppressing dikes reinforced by dumped riprap and shrub vegetation along the main dike have been revealed in the paper.

The paper describes development of the technology for obtaining thermal plasticizer from the Kansk-Achinsk brown coal while using a method of thermal destruction  in а hydrocarbon medium: oil selective purification extract or used motor oil mixtures. Coal thermal plasticizers have been used for production of unsupported roll-fed water proofing materials. The paper shows an economic effect of which can be ensured while obtaining a thermal plasticizer from brown coal.

 

The paper presents results pertaining to creation of national mobile monitoring system for  suspension hydraulic drives  in respect to high-power “Belarus” tractors. A monitoring system schematic diagram has been developed and channels for data accumulation and processing have been determined in the paper. The paper reveals dependences for determination of residual resources of the hydraulic drive. A tractor “Belarus 3022” has been used for test of the proposed system and it has  proved its operating capability.

The paper considers main directions pertaining to earth-digging machinery modernization for combat engineering. Description of modernized drive hydraulic systems for technological equipment of track layers and trench and underground digging machine is given in the paper.

 

  The paper presents a methodology that permits to construct regression dependences for traction curves of various tractors while using different operational backgrounds. The dependence construction process is carried out with the help of Microsoft Excel.

The paper considers a probability of simultaneous arrival more than one route vehicle at a stopping point  depending on a traffic interval.  Probability dependences of arrival more than one route vehicle on a traffic interval have been determined in the paper. The paper proposes calculated lengths of route vehicles, a methodology for calculation of stopping point length. A calculation example is given in the paper.

A new algorithm for detection of a maximum flow in multi-terminal network. The algorithm is based on its matrices description and execution of ternary operations in respect of matrix elements pertaining to arc capacity.  Therefore the algorithm does not require graphic network presentation. For this reason the programming realization of the developed algorithm is rather simple and it can be applied while solving a large scope of problems when mathematical models can be formulated in terms of a graph theory.

The paper considers the controllability problem of essentially various-speed singularly perturbed dynamic system consisting of three subsystems of different dimensions, containing a small parameter to a variable degree as a multiplier for derivatives.   A method for studying complete and relative
controllability of such systems has been proposed in the paper. The method is based on investigation of a controllability matrix rank. The matrix is composed of solution components of algebraic recurrent equations, which are drawn directly in accordance with the studied system of differential equations. The obtained effective algebraic conditions of controllability, expressed through parameters of the investigated system are obtained are illustrated by the case of essentially various-speed singularly perturbed dynamic system of fifth order with rational powers of small parameter.

The paper specifies a conceptual system of logistics and determines  basic elements of the logistics system of air transport. The methodology for evaluation of logistics system efficiency of international air communication in the Republic of Belarus has been presented in the paper.

The paper considers peculiar features pertaining to formation and influence of transport and logistical costs and other losses in the movement process of material, information and financial flows across the boundary infrastructure of the transport and logistical system.