Browsing Наука и Техника by Title

Now showing items 54-73 of 881

    • Knock Reduction Measures in the Gas Fuelled Internal Combustion Engine 

      Szwaja, S. (БНТУ, 2020)
      Studies on the influence of applying various technologies for combustion knock reduction have been presented in the paper. Among others, investigation concerning the following: overexpanded cycle, variable valve timing, internal and exhaust gas recirculation, leaning the combustible mixture and cooling the incylinder charge were of the interest. The research works were focused ...
      2020-08-04

    • Laser Research of the Fuel Atomization Process of Internal Combustion Engines 

      Stezycki, P.; Kowalski, M.; Jankowski, A.; Slawinski, Z. (БНТУ, 2020)
      The paper presents test methods (mechanical, electrical and optical) for the fuel spray research in combustion engines. Optical methods, imaging and non-imaging can be used in laboratory and engine tests. Imaging methods include flash photography and holography. Their use is limited to testing droplet dimensions larger than 5 μm. Imaging methods have an advantage over non-imaging ...
      2020-02-04

    • Mathematical Model of Energy Processes in Industrial Electric Screwdriver 

      Nieoczym, A.; Drozd, K.; Veselik, P. (БНТУ, 2019)
      An electric screwdriver has been designed to work in an automatic cycle on assembly lines. A characteristic feature of the screwdriver is the use of a low power motor in comparison with commonly used devices. The work for tightening a threaded joint takes place at the expense of kinetic energy in components of a drive system and the working screwdriver. It has been proved that ...
      2019-07-04

    • Modeling of Capillary Shrinkage and Cracking in Early-Age Concrete 

      Leonovich, S. N. (БНТУ, 2018)
      Scientific hypothesis on moistening shrinkage mechanism for cement stone and concrete has been assumed as a basis for the present paper. Physical ideas on a mechanism for cracks volume increment in a concrete model presented as two-level structure have been accepted as a theoretical basis for a calculation method of crack resistance during capillary shrinkage. These ideas are the ...
      2018-08-02

    • Multi-Layers Composite Plasma Coatings Based on Oxide Ceramics and M-Croll 

      Panteleenko, F. I.; Okovity, V. A.; Devоino, O. G.; Astashinsky, V. M.; Switala, F. (БНТУ, 2022)
      The paper considers the influence of the parameters of the plasma spraying process on the technological characteristics of multilayer coatings based on nickel-chromium, nickel-chromium-aluminum-yttrium materials, oxide ceramics, intended for operation at high temperature and additional dynamic loads. The design of plasma coatings during their application (with subsequent high-energy ...
      2022-04-06

    • Multi-Parameter Methodology for Assessing Quality Indicators of Nanomodified Fiber-Reinforced Concrete for Construction Site 

      Leonovich, S. N.; Sadovskaya, E. A.; Koleda, A. A. (БНТУ, 2023)
      Nanomodified fiber-reinforced concrete is a building material for which the required characteristics of fracture toughness are a distinctive feature. Determination of the stress intensity factor of fiber-reinforced concrete makes it possible to correctly assess the resistance of the material during the formation and development of cracks. The proposed multi-parameter methodology ...
      2023-10-20

    • Nanoantenna Array for Terahertz Detection Application, Design and Scope 

      Pande, S. V.; Patil, D. P.; Gade, S. (БНТУ, 2024)
      The development and implementation of a nanoantenna array for terahertz detection hold immense potential in advancing scientific research and innovation, proven by its ability to enhance terahertz signal reception, overcome limitations of conventional detection methods, and unlock new possibilities for numerous industries. However, concerns related to scalability, cost-effectiveness, ...
      2024-04-12

    • Nanofiber Concrete: Multi-Level Reinforcement 

      Leonovich, S. N.; Sadovskaya, E. А. (БНТУ, 2022)
      Concrete is the most commonly used building material worldwide. One of its main disadvantages is the fragility of fracture and low crack resistance. The use of dispersed reinforcement of concrete composites is a promising direction in solving this type of problem. Dispersed fibers, evenly distributed over the entire volume of the material, create a spatial frame and contribute ...
      2022-11-11

    • Optimization of Bridge Crane Movement Control 

      Loveikin, V. S.; Romasevich, Y. A. (БНТУ, 2018)
      Transient modes of bridge cranes movement determine their energy, dynamic and electrical performance, as well as productivity and durability of work. An optimal control problem of its movement has been solved while making an analysis of indicators for efficient performance of a bridge crane. Terminal and integral criteria have been selected as optimization criteria. They represent ...
      2018-10-11

    • Optimized Data Exchange Process between Design and Production Engineering 

      Kreis, A.; Hirz, M. (БНТУ, 2020)
      Growing vehicle variant diversity, legal requirements to reduce fleet CO2 emissions and innovations in the area of drive train technologies, coupled with the increasing pressure to cut costs, pose new challenges for parties in the automotive sector. An implementation of optimized development and production processes supports the effective handling of these challenges. One important ...
      2020-02-04

    • Organization of Logistics Operations for Transportation of Household Electronic Waste in Cities 

      Kapskiy, D. V.; Larin, O. N.; Nguyen, Thi Thu Huong; Khmelnitskaya, L. V. (БНТУ, 2022)
      The paper presents the methodological provisions for the organization of logistics operations during the transportation of household electronic waste in large cities. Human activity is accompanied by the formation of waste, the amount of which has recently increased. In modern conditions, households actively use electronic and electrical devices. Therefore, a lot of household ...
      2022-12-09

    • Organization of Six-Cylinder Tractor Diesel Working Process 

      Kuharonak, G. M.; Klesso, M.; Predko, A.; Telyuk, D. (БНТУ, 2021)
      The purpose of the work is to consider the organization of the working process of six-cylinder diesel engines with a power of 116 and 156 kW and exhaust gas recirculation. The following systems and components were used in the experimental configurations of the engine: Common Rail BOSСH accumulator fuel injection system with an injection pressure of 140 MPa, equipped with ...
      2021-10-07

    • Particularities of Exergy Analysis in Air Conditioning Systems 

      Prokhorov, V. I.; Troyanchuk, S. V.; Razakov, M. A. (БНТУ, 2022)
      The paper examines two methods of choosing the initial reference point for exergy of the moist air flow. The first method is characterized by a zero exergy value at the current temperature and humidity of the outdoor air, which are variable both in daily and annual periods. Another is characterized by constant values of parameters of moist indoor air (its temperature and humidity ...
      2022-02-22

    • Recycling of Materials for Pavement Dressing: Analytical Review 

      Tingguo, Liu; Zankavich, V. N.; Aliakseyeu, Yu. H.; Khroustalev, B. M. (БНТУ, 2019)
      The paper presents an analytical review of materials recycling for pavement dressing. Recycling or repeated usage of pavement dressing materials while making reconstruction and repair of road pavements is not considered as a new conception and it has been realized in various countries of the world since 20th century. Recycling (hot, cold) is based on methods of its execution, ...
      2019-04-16

    • Reinforced Concrete under the Action of Carbonization and Chloride Aggression: a Probabilistic Model for Service Life Prediction 

      Leonovich, S. N.; Shalyi, E. E.; Kim, L. V. (БНТУ, 2019)
      Reinforcement corrosion of marine and coastal hydraulic structures due to chloride aggression and concrete carbonization leads to a sharp decrease in structure safety. The reinforcement is subjected to a depassivation process as soon as a chloride concentration on its surface exceeds a certain threshold concentration, or the pH value in a concrete protective layer is decreased ...
      2019-08-12

    • Results of Many Years’ Measurements Conducted at the Czech State Long Distances Measuring Standard Koštice 

      Kosarev, N. S.; Lechner, J.; Padve, V. A.; Umnov, I. A. (БНТУ, 2023)
      Currently, electronic total stations based on the principles of laser long-range distance measurement are used for collecting geospatial information. As time goes, in the process of using the electronic total stations, their technical parameters vary, necessitating periodic calibration of the instruments. Calibration of the long-range distance measurement laser component of the ...
      2023-02-08

    • Road Safety Concept in the Republic of Belarus 

      Kapski, D. V.; Bogdanovich, S. V.; Kot, E. N.; Khmelnitskaya, L. V. (БНТУ, 2024)
      The general trend of accident rate reduction, which has been observed in the Republic of Belarus since 2010, reversed in 2017–2018. Remaining within the framework of the country’s traditional engineering activities related to road maintenance is unlikely to significantly improve road safety. A transition to qualitatively new practices and mechanisms for ensuring road safety is ...
      2024-04-12

    • Robust Design of Suspension System with Polynomial Chaos Expansion and Machine Learning 

      Gao, H.; Jezequel, L.; Cabrol, E.; Vitry, B. (БНТУ, 2020)
      During the early development of a new vehicle project, the uncertainty of parameters should be taken into consideration because the design may be perturbed due to real components’ complexity and manufacturing tolerances. Thus, the numerical validation of critical suspension specifications, such as durability and ride comfort should be carried out with random factors. In this ...
      2020-02-04

    • Signal Pre-Selection for Monitoring and Prediction of Vehicle Powertrain Component Aging 

      Udo Sass, A.; Esatbeyoglu, E.; Iwwerks, T. (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

    • Simulation Model for Drivability Assessment and Optimization of Hybrid Drive Trains 

      Domijanic, M.; Hirz, M. (БНТУ, 2021)
      The growing electrification of vehicle drive trains is increasing their complexity significantly. The interactions between the different drive train components should not be noticed negatively by the occupants, which is considered as good drivability and thus contributes to increasing customer acceptance. Today’s development processes of hybrid- and electric driven cars consider ...
      2021-02-04