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The Uniformal Metallization of the AlSiC Metal Matrix Composite Material Surface

Journal of Surface Engineered Materials and Advanced Technology 2014年第4期4卷 237-241页

作者： Nikolai Vladimirovich Sevostyanov konstantin nikolaevich nishchev Mikhail Il’ich Novopoltsev All-Russian Scientific Research Institute of Aviation Materials State Research Center (VIAM) Moscow Russia Mikhail Il’ich Novopoltsev Ogarev Mordovia State University Saransk Russia

The surface of the AlSiC composite material consists of aluminum and silicon carbide areas. The uniformal metallization by nickel is necessary in order to provide solderability and high thermal conductivity of the surface. The process of chemical deposition of nickel coatings elaborated in the research center VIAM yields the uniformal highly adhesive metallization. The kinetics of the deposition process has been studied and the estimation of the coatings quality has been made in comparison with commercially available samples produced elsewhere.

关键词： Composite Coating AlSiC Nickel

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Comprehensive Automation of Microprocessor Protection Relay Terminals Operated on AC Railways

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Journal of Applied Mathematics and Physics 2022年第2期10卷 491-503页

作者： Vostrikov Maksim Viktorovich Daneev Aleksey Vasilyevich Menaker konstantin Vladimirovich Sizykh Viktor nikolaevich Zabaikalsk Rail Transport Institute A Branch of Irkutsk State Transport University Chita Russia Irkutsk State Transport University Irkutsk Russia

The article discusses the possibility of a potential reduction in the number of operations of microprocessor relay protection of feeders of the contact network of AC railways TsZA-27.5-FKS (FTS) for unknown reasons. Real statistics on the number of microprocessor relay protection operations at the Buryatskaya traction substation are presented, simulation of the real train situation (in accordance with the regime maps of the throughput capacity of the sections of the Trans-Baikal railway) was carried out in the specialized software complex “KORTES”. Based on the results of the analysis of simulation modeling, the process of forming a unified template of settings using neural network technologies is considered, which characterizes only this specific regular train situation. To protect objects in the event of pre-emergency and emergency modes of operation of the traction power supply system, a variant of changing the standard operation algorithm of the TsZA-27.5-FKS (FTS) terminal by introducing additional blocks for calculating the predictive functions of current and voltage has been proposed.

关键词： Automated System Microprocessor Relay Protection Devices Feeder Traction Substation

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The Automated System of Unified Templates as an Element of Trainability of Microprocessor Relay Protection Devices

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Journal of Applied Mathematics and Physics 2021年第12期9卷 3045-3057页

作者： Viktor nikolaevich Sizykh Aleksey Vasilyevich Daneev Maksim Viktorovich Vostrikov konstantin Vladimirovich Menaker Irkutsk State Transport University Irkutsk Russia The Transbaikal Institute of Railway Transport Chita Russia

The article discusses the possibility of further modernization of the standard microprocessor relay protection of AC overhead system feeders DPA-27.5-TNF, which is operated on the Trans-Baikal Railway by creating an additional automated system of unified templates necessary for the occurrence of “trainability” elements. The templates will be formed via a separate dedicated channel for transmission, processing and storage of the necessary information, not related to the operation of the terminal, with its subsequent visualization at the workplace of the duty personnel of traction substations, together with information from the “GID” software received via another dedicated wired channel. With the help of such a base of unified preset templates, in the future, it will be possible not only to identify the specific causes of each emergency shutdown but also to reduce their number by dynamically adjusting the existing presets of the standard operation algorithm.

关键词： Automated System Microprocessor Relay Protection Devices Feeder Traction Substation

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Mathematical Modeling of Peat Self-ignition at Ambient Temperature Oscillations

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Journal of Energy and Power Engineering 2013年第3期7卷 491-495页

作者： Vassili Gorelski konstantin Zhiltsov Aleksei Yashchuk Alexander Shteinberg Alexander Berlin Research Institute of Applied Mathematics and Mechanics Tomsk State University Tomsk 634050 Russia ALOFT Corporation Berkeley 94708 California USA Nikolay nikolaevich Semenov Institute of Chemical Physics of the Russian Academy of Sciences Moscow 117977 Russia

In the classical formulation, the problem of thermal explosion in a finite volume of the reacting material in the presence of harmonic oscillations of the ambient temperature has been solved. It is shown that in the oscillation periods, commensurate with the adiabatic induction period of thermal explosion, implement a kind of resonance which corresponding with average ambient temperature. At both high and very low frequencies oscillations at ambient temperature, their influence on the critical condition and on the induction period of thermal explosion is negligible. However, at low-frequencies influence of ambient temperature oscillations, even a relatively low amplitude, on critical condition and especially on induction period of thermal explosion, can be very strong.

关键词：温度振荡数学建模环境温度自燃泥炭热爆炸诱导期谐波振荡

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