- 1. Obtaining kinetic characteristics of combustion of the coke from solid biofuels
- (Content №6 2020)
- ... sizes in a wide range of temperatures. Methodology. The initial data on carbon decrease over time at varying temperatures was obtained experimentally. The coke-ash residue was prepared in two stages, by ...
- Created on 22 December 2020
- 2. Dynamic analysis of thin laminated viscoelastic structures under elevated temperature using finite element modeling
- (Content №6 2020)
- ... the effect of elevated temperature on interlaminar stresses for different laminated viscoelastic structures and boundary conditions. Each structure considered consists of three laminated layers, where ...
- Created on 22 December 2020
- 3. Sodium silicate solute foaming in a flat slot-type capillary under microwave radiation influence
- (Content №6 2020)
- ... solute is done by the optical microscopy method with magnifications of 25 to 200 times. Microwave furnace internal temperature is measured using non-contact electronic infrared thermometer Temperature ...
- Created on 22 December 2020
- 4. Effect of alloying heat-resistant packing coatings on their tribotechnical, physical and mechanical properties
- (Content №6 2020)
- ... and microhardness to ensure predictable performance properties at the temperatures of about 1100 C. Methodology. The friction coefficient and the energy rate of wear were determined regarding the results ...
- Created on 22 December 2020
- 5. Optimization of heat production processes in the biofuel vortex combustion systems
- (Content №6 2020)
- ... taking into account their humidity and ambient temperature, as well as the implementation of correction of performance control devices (dispensers) on the basis of these data. Findings. To determine the ...
- Created on 22 December 2020
- 6. Methods for determining the efficiency of the grinding process
- (Contens №5 2020)
- ... A. P. (2016). Determination of cutting temperature during milling of titanium alloys with end mills. Bulletin of NTUU “KPI”. Mechanical Engineering, 3(78), 71-76. 9. Tripasy P., & Maity, K. P. ...
- Created on 30 October 2020
- 7. Justification of rational parameters for manufacturing pump housings made of fibroconcrete
- (Contens №5 2020)
- ... of pump housings operating in the mining and metallurgical industry in unfavorable conditions such as pumping of aggressive liquids, highly abrasive pulp, high ambient temperature, dust, and others. The ...
- Created on 30 October 2020
- 8. The character of disruption of the rocks surface during rapid cooling
- (Contens №5 2020)
- ... Increasing the potential energy of the stretched rock layer due to an increase in the temperature difference between heating and cooling (“toughening” of the thermal shock regime) leads mainly to an increase ...
- Created on 30 October 2020
- 9. Mathematical simulation of heat and mass exchange processes during dissociation of gas hydrates in a porous medium
- (Contens №5 2020)
- ... state under the influence of relatively high initial temperature and pressure factors, is investigated. Numerical studies on the temperature and pressure patterns during the gas hydrate dissociation are ...
- Created on 30 October 2020
- 10. Rationale of use of guanidine surfactants for fire extinguishing in natural ecosystems
- (Contens №4 2020)
- ... Tian, Z. (2018). Preparation and High Temperature Resistance of a Novel Aqueous Foam for Fire Extinguishing. Procedia Engineering, 211, 514-520. 9. Taysumov, Kh. A. (2018). The composition of heat-resistant ...
- Created on 30 August 2020
- 11. Study on the effect of plasticizers and thermoplastics on the strength and toughness of epoxy resins
- (Contens №4 2020)
- ... to ED-20 are high-temperature polycarbonate (5 %) and polysulfone (10 and 15 %), the addition of which causes a simultaneous increase in both properties. A significant increase in the toughness of Etal ...
- Created on 30 August 2020
- 12. Influence of mechanical and thermal treatments on microstructural transformations in cast irons and properties of synthesized diamond crystals
- (Contens №4 2020)
- ... temperature and deformation fields that ensure transformation of polymorphic graphite to diamond with emerging gradient stress fields at the stages of forging, exposure to shock waves and thermal cycling. ...
- Created on 30 August 2020
- 13. Efficiency of underground gas generator in consideration of the reverse mode
- (Contens №4 2020)
- ... temperature field distribution around the fire face of the underground gas generator have been identified. Correction coefficient (kv) has been determined, which helps to obtain the data on the advance ...
- Created on 30 August 2020
- 14. Influence of pulse excitation on electromechanical indicators of a linear pulse converter of electrodynamic type
- (Contens №3 2020)
- ... the maximum speed, the pulse of electrodynamic forces (EDF) and the temperature rise of the inductor winding. The highest values of the maximum speed and impulse of an EDF arise upon excitation by a vibrationally ...
- Created on 02 July 2020
- 15. The analytic-field method for calculating the squirrel-cage induction motor parameters
- (Contens №3 2020)
- ... Banakara (2017). Finite element analysis in the estimation of air-gap torque and surface temperature of induction machine. Materials science and engineering conference series, (225), 46-56. https://doi.org/10.1088/1757-899X/225/1/012116. ...
- Created on 02 July 2020
- 16. Enhancing the efficiency of gas distribution stations operation by selecting the optimal gas pressure and temperature parameters at the station outlet
- (Contens №3 2020)
- ... and regulatory documents, the optimal gas temperature at the outlet of the gas distribution system was determined. It was outlined that the implementation of the developed set of measures will allow obtaining ...
- Created on 02 July 2020
- 17. Simulation of heat transfer process in a multilateral cylindrical shell taking into account the internal heat sources
- (Contens №3 2020)
- ... повний текст / full article Abstract: Purpose. To investigate the peculiarities of distribution of a non-stationary temperature field over the thickness of a multilayer hollow ...
- Created on 02 July 2020
- 18. Using broadband signals for structural change detection in metal details
- (Contens №3 2020)
- ... for forming and digital processing of wideband signals based on the RBHF for diagnostic detection of changes in the metal structure which provide invariance to temperature fluctuations by using the signal ...
- Created on 02 July 2020
- 19. The environmental reliability of gas-fired boiler units by applying modern heat-recovery technologies
- (Contens №2 2020)
- ... Findings. The thermal and humidity characteristics of the exhaust gases at the mouth of the chimneys were studied at used dry and heated air to reduce the humidity of these gases with a wide temperature change. Under the conditions considered, the main parameters of the chimney anti-corrosion protection systems were determined to prevent condensation in them under normative operating conditions of these chimneys. Based on the values of the obtained parameters, a comparative analysis of the effectiveness of the considered methods for protecting gas exhaust paths for various heat-recovery plants was performed. It is shown that for heating boilers, the use of the air method is most effective in complex-heat recovery systems, characterized by the use of recovered heat to heat the return heat-network water and combustion air ...
- Created on 10 May 2020
- 20. Calculation of static and dynamic losses in power IGBT transistors by polynomial approximation of basic energy characteristicss
- (Contens №2 2020)
- ... Findings. The proposed calculation method allows the Matlab software to determine with sufficient accuracy the static and dynamic losses in power IGBT-transistors and reverse diodes for any type of semiconductor converter with any control law. The simulation confirms the accuracy of the proposed technique for calculating power losses in semiconductor converters. In addition, the presented method allows determining not only the power loss, but also the temperature of the power transistor to prevent it from failing. The results of the approximation of the characteristics of high-voltage power IGBT-transistors manufactured by Mitsubishi are presented. ...
- Created on 10 May 2020