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The problems of analyzing the rail and wheel profiles of a railway rolling stock in order to identify the conformity of their contact are examined. Mathematical data are presented and, basing upon them, geometric parameters of a contact spot are calculated. Graph dependencies are designed and the results are compared with the currently available data in studies of the wheel/rail interface. The contact...
In recent years multilayer structures replaced traditional powder thermite mixtures and opened up new possibilities for nano- and micro-scale surfaces, materials and devices joining processes. This paper presents the results of experimental studies of the thermal wave propagation velocity in multilayered thermite materials. For experimental studies Al-Ni based multilayer structures were formed on...
This research considers a structure of metrics enabling estimation the information security status in a complex computer network. The structure under consideration consists of 4 layers: integral layer, subnet layer, segment layer and host layer. Each layer contains a set of metrics reflecting particular aspects of the network functioning on this layer. The process of information security management...
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