Fundamental physics and mathematics principles of complex wave structures needed for research and development of complex crystal-like structures and signal processing devices based on them were created. The generalized impedance model of different wave nature barrier structures is developed. In the analysis of structures impedance model allows use of the nonuniform transmission lines theory.
The dependence of the concentration of lead and calcium Raman spectra (RS) films of lead titanate-calcium Pb1-xCaxTiO3 (PCT), it is determined that the substitution of Pb Ca on the general nature of the spectra does not change even when x = 0.45 Raman spectra correspond to tetragonal ferroelectric phase, which is implemented in pure PCT. It was revealed that the soft mode component A1(TO) in the film-lanthanum titanate lead Pb0.9La0.1TiO3 (PLT) has a frequency of 280 cm-1 and significantly shifted to lower frequencies with an increase in the content of La.
On the basis of technology TONTOR reasonably new principles of integrated combination of sensors BTO system that will allow not only the early detection of disease, but also carry out preventive measures to detect vibration characteristics.
The charge capacity of cathodes of lithium power sources (LIPS) depends on the degree of implementation of the ions in the structural channels, defects and other features of the developed surface of nanosized materials. Interaction ions of lithium with the ions which are on the surface nanoparticles directly dependent on the energy distribution of the valence electrons, particularly a negatively-charged ions. It is important to identify change of these characteristics as a result of methods of synthesis of nano-sized composites.
A new scientific concept, new methods and means of improving the flow of new termoanemometrychnoho (TAB) (patent of Ukraine), the theoretical bases of research of temperature field of biofuels. Increased accuracy (1.5%) compared with the known works (3%), high speed 10 times. A further practical use new software and hardware for computer-based (patent of Ukraine), which provides automated measurements in real time while documenting information in the right form (figures, graphs, tables) that extends the functionality.
Analysis of accidents in electric power systems (EPS) of the world has shown that one of the reasons for their occurrence is poor damped low-frequency oscillations (LFO). This requires solving of the complex problem aimed to reduce the LFO impact and increase the stability of the EPS. For the interconnected power system (IPS) of Ukraine, which is characterized by relatively weak interconnections in the conditions of rising of amount of distributed energy sources (RES) to solve these problems it is particularly important.
Increasing of operational properties, especially wear-resistant surface of industrial components may be achieved by modifying the surface layers of nano forms through the providing of nanopowders into the molten pool at electric-arc surfacing and coating during thermal spraying.
A new principle of attitude control system of ultra-small spacecraft (SKA) is developed, which is based on the determination of the spatial orientation of SKA by information of multi-antenna GPS-system and further usage of this information in the control loop of engine-flywheel (EF) - executing element of control system of angular motion of SKA. Methods and algorithms for determining the spatial orientation of SKA are investigated, as well as methods and algorithms for signal generation of the angular acceleration, which will significantly expand the resources of the precision of EF.
Main goal in the development of technological process and the design of experimental equipment for its realization was to improve the exploitation properties of parts. It is possible to pattern required micro-relief on flexible thin-walled workpieces and, with help of additional ultra-sonic processing, on rigid bulk parts. Данная технология позволяет создавать требуемый микрорельеф на не жестких тонкостенных деталях или его формирование (для жестких деталей) с помощью дополнительной выглаживающей УЗ-обработки
The technology of manufacturing of powder of superhard and high-strength ceramic materials by directional crystallization of eutectic alloys of B4C-TiB2, LaB6-ТіB2, Mo-Si-B systems in conditions of zone melting and centrifugal spraying was developed. It is found that the change of the process parameters allows obtaining the powders with particle size of 40-500 microns, a spherical shape and narrow particle size distribution.
