Сериальные издания: Recent submissions
Now showing items 3061-3080 of 7947
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Рассеяние упругих волн неоднородной границей при акустическом контроле неразъёмных соединений
(БНТУ, 2019)Повышение надёжности и производительности контроля неразъёмных соединений различных материалов, выполненных сваркой, напылением, склеиванием, пайкой и другими методами, является важной производственной задачей, для решения которой наиболее простым и эффективным является акустический метод. Цель работы заключалась в расширении технических возможностей и повышении чувствительности ...2020-01-08 -
Frequency Domain Diagnostics of Transformer Insulation
(БНТУ, 2019)The first part of paper deals with the base information about diagnostics of power transformers. In this part are presented differently insulating methods, for example method of recovery voltage method, method of polarization and depolarization currents and chromatographic analysis. The second part of paper deals use of method of frequency domain spectroscopy for oil power ...2020-01-08 -
Новые функциональные возможности пожарных извещателей для жилых и промышленных помещений
(БНТУ, 2019)Актуальность раннего обнаружения признаков пожара вполне очевидна, поскольку в результате принятия необходимых мер по эвакуации людей и материальных ценностей, обесточиванию электрооборудования и тушению пожара в момент начала возгорания либо пассивного тления можно полностью избежать человеческих жертв и сократить экономические потери до минимума. Приведено графическое представление ...2020-01-08 -
Моделирование работы навигационного приёмника для сверхмалого космического аппарата
(БНТУ, 2019)В настоящее время к сверхмалым космическим аппаратам предъявляются жёсткие требования в части точности определения положения спутника на орбите, при этом на спутник накладываются ограничения по массе, габаритам и потребляемой мощности. Целью данной работы являлось моделирование работы навигационного приёмника сверхмалого космического аппарата с ограничениями по энергопотреблению ...2020-01-08 -
Влияние экстракции дырок из базовой области кремниевого p–n–p-транзистора на его реактивный импеданс
(БНТУ, 2019)Транзисторные структуры являются базовыми элементами интегральной схемотехники и часто используются для создания не только собственно транзисторов, но и диодов, резисторов, конденсаторов. Определение механизма возникновения импеданса индуктивного типа в полупроводниковых структурах является актуальной задачей, решение которой создаст предпосылки к разработке твердотельных аналогов ...2020-01-08 -
Устройство и методика измерения моментов сил сопротивления качению на пятне контакта
(БНТУ, 2019)В настоящее время изучение трения качения является одним из основных направлений в исследовании закономерностей контактного взаимодействия твёрдых тел. О сложности решения проблем, существующих в этой области, свидетельствует практически необозримое количество публикаций, список которых постоянно растёт. В данной работе внимание уделяется исследованиям моментов сопротивления ...2020-01-08 -
Continuous-wave Laser on Er,Yb-Codoped Pentaborate Crystal
(БНТУ, 2019)We report, for the first time to our knowledge, a diode-pumped continuous-wave microchip Er,Yb:YMgB5O10 laser. The purpose of this work was to study the growth technique, spectroscopic properties and continuous-wave laser performance of Er3+,Yb3+:YMgB5O10 novel crystal. Absorption and luminescence spectra as well as kinetics of luminescence decay were studied. Ytterbiumerbium ...2020-01-08 -
Validation of an Assistance System for Merging Maneuvers in Highways in Real Driving Conditions
(БНТУ, 2019)In the latest study conducted by the National Highway Traffic Safety Administration in 2018, it was published that human error is still considered the major factor in traffic accidents, 94 %, compared with other causes such as vehicles, environment and unknown critical reasons. Some driving scenarios are especially complex, such as highways merging lanes, where the driver obtains ...2019-12-06 -
Signal Pre-Selection for Monitoring and Prediction of Vehicle Powertrain Component Aging
(БНТУ, 2019)Predictive maintenance has become important for avoiding unplanned downtime of modern vehicles. With increasing functionality the exchanged data between Electronic Control Units (ECU) grows simultaneously rapidly. A large number of in-vehicle signals are provided for monitoring an aging process. Various components of a vehicle age due to their usage. This component aging is only ...2019-12-06 -
Increasing the Quality of Transient Processes in the Vehicle Transmission
(БНТУ, 2019)The paper shows results of an experimental and theoretical study of dynamic processes in the vehicle transmission after kinematic alignment of elements during gearshifts. The purpose of the research is increasing the quality of transient processes in the vehicle transmission. Applying an analysis of experimental results obtained through looking into dynamics of a 3-ton vehicle ...2019-12-06 -
The Analysis of Available Data on Energy Efficiency of Electric Vehicles to be Used for Eco-Driving Project Development
(БНТУ, 2019)The goal of this paper is to analyse the collected data on energy efficiency of electric vehicles from researches done by other authors and also to summarise all the factors affecting it. The majority of data available are obtained through simulations – therefore the emphasis in this paper will be placed on experimentally acquired data. The results of the analysis will be used ...2019-12-06 -
A Two-Echelon Green Supply Chain for Urban Delivery
(БНТУ, 2019)In recent years the urbanization to affect many countries of the world has made the significant changes to the material flow at all levels of the supply chain. The last mile logistics operating in the urban area has also changed notably. An increase in the volume of material flow within cities has led to a growth in the number of deliveries and the freight turnover, accordingly. ...2019-12-06 -
Analysis of Trams’ Consumption Depending on the Type of Traffic Light Used
(БНТУ, 2019)In the XXI century, when environmental awareness is growing and the impact of human activity on the planet is more and more noticeable, striving to minimize energy consumption seems to be a necessary direction in the development of technology. This development cannot take place without an initial understanding and describing the relationships influencing specific technologies. ...2019-12-06 -
Analysis of the State of the Road Traffic Safety in the Republic of Kazakhstan
(БНТУ, 2019)The article presents the results of the study of the road traffic safety on the automobile roads of the Republic of Kazakhstan. We performed the analysis of the main indicators, specifying the state of the road traffic safety on the automobile roads of the republican significance of the Republic of Kazakhstan. In many regulatory acts, such as “The Priority Action Plan for Improving ...2019-12-06 -
Skills and Training Requirements for the Future Transportation Sector of Europe
(БНТУ, 2019)More than 10 million people are directly employed by the transport industry in Europe, accounting for 4.5 % of total employment and representing 4.6 % of Gross Domestic Product (GDP). This fact, combined with the rapid developments and changes of the sector, makes imperative the need to create, attract and retain appropriate staff. As the overall trend is to increase automation, ...2019-12-06 -
Contactless Automated Express Evaluation of Damages to a Car Body by Visual Parameters
(БНТУ, 2019)Explosive development of computer technologies and their availability made it possible to extensively focus nowadays on emerging state-of-the-art technologies, digitalization, artificial intelligence, and automated systems, including in the field of road safety. It would be reasonable to implement some technical devices in this respect to remove human factor and automate some ...2019-12-06 -
Electric Propulsion Systems Design Supported by Multi-Objective Optimization Strategies
(БНТУ, 2019)Electric drive systems consisting of battery, inverter, electric motor and gearbox are applied in hybrid- or purely electric vehicles. The layout process of such propulsion systems is performed on system level under consideration of various component properties and their interfering characteristics. In addition, different boundary conditions are taken under account, e. g. ...2019-12-06 -
Design Features when Using an Effective Microturbine as a Range Extending Engine
(БНТУ, 2019)The rapid development of electric vehicles stimulates the development of structures related to their operation. Including the use of the range extending engine for electric vehicles. The use of gas turbine engines for vehicles has always been of interest. The microturbine in the range extending engine is relevant today. However, the possibility of using a microturbine as part of ...2019-12-06 -
Thermal Measurement and its Application for Diagnostics of Distribution Oil Transformers
(БНТУ, 2019)In the first part of the paper the theory of infrared radiation and the use of non-destructive measurement of electrical devices by means of thermovision are under analysis. In the second part of paper basic principles and application of non-contact temperature measurement are examined. In the third part of paper thermal processes in distribution oil transformer – temperature in ...2019-11-29 -
Formation Mechanisms and Methods for Calculating Pollutant Emissions from Natural Gas Combustion Depending on the Burner Emission Class
(БНТУ, 2019)The combustion of hydrocarbon fuels in the chambers of heat generating plants is one of the main sources of pollutant emissions. Environmental standards and rules that limit emissions are becoming more stringent and their implementation requires the introduction of advanced technologies and equipment. The main device in combustion systems are blow burners, the design of which ...2019-11-29