48 articles in this issue
D. B. Astrakhantsev,V. I. Havryliuk,O. V. Zavhorodnii
A mathematical model describing distribution of an electromagnetic field around a rail with account of skineffect in rail steel is developed and experimental measurements of a magnetic intensity are carried out.
O. V. Zavhorodniy,V. I. Havryliuk,V. H. Sychenko
An analysis of electromagnetic influence of rolling stock and traction power supply system on rail circuits and cab locomotive signalization has been provided. A method of determining permissible levels of dangerous and preventing electromagnetic influenc... see more
T. M. Serdiuk,V. I. Gavryliuk
The occurrence reasons of 50 Hz frequency interference in rail circuits are analysed. The interference was registered on some railway sections by an experimental research. The average value of amplitude has made 1.8 ? in a dividing pause of a code «Green»... see more
A method is proposed for determination of rail circuits parameters in measurements with the use of automated microprocessor system, installed in a laboratory car. The system allows to check and measure the parameters of current in the rail circuits. The v... see more
V. H. Sychenko,M. P. Bader,V. I. Havryliuk
The criteria of voltage regulating quality on tractive power supply substation buses have been analyzed and the suboptimum adaptive algorithm of voltage regulation has been proposed. The method developed for a Dcelectrified railway section allows reducing... see more
O. I. Tymoshkin,V. V. Kamenskyi
Various methods of operative built-in check for digital functional units are proposed. These methods are based on simultaneously using several self-checking or (and) non-self-checking control schemes for the same functional unit.
Yu. L. Zaiats,V. V. Beliaeva
A numerical model to simulate the process of pollutant transfer in rooms was developed. The numerical simulation is carried out using 2D models of pollutant transfer and potential flow. The implicit finite difference schemes are used. The results of numer... see more
O. V. Aulin,D. M. Baranovskyi,V. H. Kuznetsov
The process of secondary structures formation on the friction surface of contact wire in the process of operation has been explored. A possibility of obtaining and modifying secondary material structures within the system «contact wire – current collectio... see more
N. H. Visyn,B. T. Vlasenko,O. O. Sokolov
The article examines transitional processes in the power circuit of tractive motors and their influence on the work of grading automatic starting of EMU trains ER2R, ER2? and EPL2?. Recommendations have been developed for increasing reliability of operati... see more
H. K. Hetman,S. V. Arpul,E. O. Dovhan
A method of determining optimal power range of tractive vehicles for passenger operations in case of applying several speed categories on traction area of a locomotive depot or a railroad has been developed.
H. K. Hetman,M. H. Visyn,B. T. Vlasenko,O. I. Kyiko
The article provides brief description of a technical project for reequipping the electric locomotives VL80? and VL80S with smooth thyristor adjusters of tractive motors with the single automatic control system.
T. M. Mishchenko
A mathematical model of DC electric locomotive series DE 1 has been developed for study of the influence of jolt-like voltage changes on the pantograph on transitional electromagnetic processes. The authors have made numeric calculation of the magnetic fl... see more
P. V. Kovtun,V. V. Taletskyi,E. M. Etin,P. Yu. Etin
The article represents results of inspections of reinforced concrete plates of ballastless bridge surfacing on Byelorussian Railway. Special forms of recording the observable parameters in operational supervision have been proposed. Measures have been sug... see more
V. V. Rybkin,M. A. Arbuzov
Nowadays the maintenance of long welded rails track is an urgent problem of railway industry. The inexact diagnostic method of the stressed state of long welded rails is used now on railways of Ukraine. This method does not give a direct and true picture ... see more
V. V. Rybkin,O. M. Bal
The article suggests a technique of determining admissible efforts in rails on the basis of the analysis of random removal of a rail from track. The differentiation of admissible efforts in rails is offered depending on a category of track.
M. I. Umanov,V. V. Tsyhanenko,O. H. Reidemeister,M. V. Khalipova,V. V. Koval?v
The article presents the outcomes of experimental and theoretical research on determination of allowed train running speeds on the segments of track repaired in conditions of long-time section closure, with the use of track maintenance machines RM-80 (or ... see more
O. M. Bashkatov
The article is devoted to the issues of interaction between railway transport and fixed route modes of goods delivery to customers, the provision of optimal functional schemes of the route network, in accordance with specific capacities of a transport jun... see more
V. V. Harbaruk,P. V. Herasymenko,S. V. Elyzarov,V. O. Khodakovskyi
The article provides methodical guideline on construction of mathematical model for evaluation of the number of auxiliary educational staff for provision of training workshops of all kinds.
M. M. Strekalov
Approximation of transitive function by means of solution of second order differential equation has been examined and estimation of the error of transfer function has been determined.
R. V. Lisnevskyi
The article gives estimation to the task of development and introductions of the decisions support systems in the process of designing glass packages. The forecasts have been made of sharpening of contradictions, characterizing the process of designing; s... see more
I. Ye. Kramar,S. O. Yakovliev,V. V. Sytyk
The article gives estimation of technical level of building and handling machinery, on the basis of which it develops a method of technical equipment of the State Special Transport Service of the Ministry of Transport and Communication of Ukraine and prov... see more
B. I. Toropov
The article examines historical development of scientific ideas about the system of carflow organization on the railway network since the moment of its appearance and establishment and enumerates main stages and aspects of technological and economic chara... see more
M. H. Visyn,B. T. Vlasenko,O. I. Kyiko,O. O. Yehorov
The article deals with the analysis of the work of Traction Motor Protecting System on electric locomotives DE1, which protects the motors from inner and outer short circuits in the mode of recuperative breaking. The calculations have revealed that the sy... see more
L. V. Petrovych,S. M. Holik
A modernization option of onboard test units of the electric locomotive ChS7 on the basis of use of control electric circuits flow-charts for calculation of the minimal number and location of the control points has been proposed in the article.
V. Klapita,B. Buková,V. Bartošová
Smart dust utilization is futuristic concept that thinks over the use of microscopic equipment called «smart dust» on railway transport. It appears from the technology of near future, whose base should be tiny sensors able to collect, process and wi... see more
I. O. Vakulenko,H. V. Reidemeister,O. M. Perkov
Factors have been examined that influence the strength parameters and other characteristics of railway wheels.
V. Ye. Artomov
The method of combinational profiles is used for refining the values of deformational and force factors in the designs of automobile bridges, intended for multi-lane road traffic.
D. O. Bannikov
Steel reservoir-type constructions are now some of the most widespread types of thin-walled structures. One of the biggest problems with them now is the increased level of corrosion wear during the operation. All the used methods, as practice shows, are n... see more
Yu. V. Beliavskyi,O. V. Mashytun
The analysis of work of the system «high filling – water-carrying pipe – the base» reveals the causes of stretch deformation alone the pipe axis, deflection of the pipe body in relation to its heads, etc. For solution of these problems new designs of wate... see more
S. V. Borshchevskyi
Are considered a technique and results of experiments spent on concrete samples, on study of change durability of the characteristics of a concrete stone depending on time and conditions of a storage of containing components. By the received results the p... see more
S. O. Bokarev,O. M. Yashnov,S. S. Pribytkov,O. V. Sliusar
The article examines the questions of improving supervision and diagnostic techniques of facilities. Natural frequency of superstructure is selected as a primary diagnostic parameter. Modeling of dynamic behavior of a span superstructure has been based on... see more
V. Ye. Volkova,Ye. O. Misiura
O. O. Goncharenko
This article describes conceptional approach to the organization of production and manufacturing technique of the insulative material «Heatisol-2» and gives general information on the new material.
H. S. Zhelezniak,K. I. Soldatov
The article, using the example of a three-flight irregular beam, studies the influence of irregularities of linear, stiffness- and mass-related parameters on the change of own frequencies. It has been shown that at certain parameters of irregularity it is... see more
V. O. Ishchenko,M. V. Shaptala
A procedure has been developed of calculating a 3-D temperature field with application of FEM for determination of vulcanization time of elastomer products with geometrically complex heating surfaces. On the example of heavy-duty tire it has been shown th... see more
V. M. Konoval
The article considers the issues of aggressive media influence upon corrosion-resistance and service lifespan of the collectors made up from reinforced concrete pipes. As the basic method of protection from internal corrosion it is suggested making obliga... see more
M. I. Netesa
The article deals with the issue of using super-plasticizers in concrete grades with strength less than 20 MPa, which provides substantial economic effect.
O. P. Nikiforov,M. O. Matenchuk,O. O. Pushkarenko,D. O. Horydko
The work describes the results of study of the rheological properties of cement compositions with complex modifiers, and offers a method of determining the optimal dosage of the chemical additives.
O. M. Pshinko,S. V. Miamlin,V. D. Petrenko,S. V. Tsepak
The work proposes dynamical interpretation and extensive analysis of display graphics for computations of railway earth permanent way.
A. V. Radkevych
By an ambivalent task in a network interpretation a model has been developed, which allows producing optimal organizational and technological solutions for renewal of facilities in a set timeframe.
O. S. Raspopov
Results of investigations, based upon logical models application, are used for account of intermediate supports of continuous multispan beams. The matrices obtained take into account all possible combinations of elastic fastenings of both the end and inte... see more
B. V. Savchynskyi
The article generalizes the basic criteria of estimating reliability of metal span structures of railway bridges. Recommendations have been offered for increasing reliability and operational safety of the bridges.
O. V. Krasniuk,O. L. Koreiko,Ye. S. Kharchenko
The article presents results of studies of epoxy-based polymeric composition of for repair and protection of concrete and reinforced-concrete facilities. Models have been designed, reflecting physical, mechanical and rheological properties of the composit... see more
Yu. S. Barash
Five organizational models have been proposed that could be used to for implementation of structural reform of railway transport in different countries of Europe.
O. O. Kovtun
In the present-day, quickly changing economical situation it is practically impossible to achieve positive results without planning one’s actions and forecasting their consequences on the market of educational and other services. A comparison of theoretic... see more
T. V. Teslenko,Nyn Chzhan
The article presents analysis of basic directions of development and reformation of railways control system in China.
T. V. Polishko
The break-even analysis is built on the basis of splitting the costs into variables and permanent. For this purpose the method of marginal income is seen the most acceptable. It is suggested to use marginal approach of costs account for operative manageme... see more
O. S. Savenko,H. I. Muzyka,P. V. Bekh
The article presents a method of calculating the costs of rail freight container services.