According to the results of research work, the conditions for obtaining high-quality compounds in the process of contact welding of biological tissues with electrical pulses are determined. The dependences of the quality indicators of welded joints on the used form of welding pulses, which is characterized by the law of change of current (or power), amplitude and duration, are analyzed.
Today, the necessity of development highly productive and metal-saving equipment for electron-beam melting of refractory and chemically active metals is stimulated by the needs of nuclear, aviation, space technology, chemical technology and the electronics industry in highly pure metals and alloys that retain high strength at high temperatures, chemical resistance and required electrical parameters. Electron beam vacuum melting is the most efficient way to obtain such materials.
A simulation model was developed for the first time. That model takes into account variable temperature gradients, the scheme of reinforcement of multilayer PCM under conditions of complex dynamic and vibration load. For the first time, a phenomenological model of scattered destruction of anisotropic structural materials was developed. The main thermopower parameters of the operational load and the anisotropy coefficient were taken into account. A new method for estimating the strength of bolted joints of composite panels has been developed.
In the course of work on the basis of the developed theory of interactive methods of control of formation of a difficult surface: by placement of an initial surface by means of functional dependences of geometry of a surface and parameters of space, the software integrating with CAD / CAM systems, namely the COPTeR software for space management is developed.
The fundamentals of non-trivial additive technologies of 3D-printing and cold spraying (CS) for the manufacture of complex-shaped products from cermet and ceramic composites, as well as from multicomponent metal alloys, which are fundamentally different from existing analogs of costly foundry methods ensure the level of material properties required for their operation at temperatures above 600 °C, under conditions of high-speed multiple heating-cooling (1500 deg/min), cyclic loading and in an aggressive oxidizing environment.
Algorithmic and technological approaches to the technological-constructive and algorithmic-software integration of the complex of navigation-visual modules and sensors are determined. A patent information study was carried out on a number of technical and technological solutions. A physical and mathematical model for solving navigation problems with the structure of a local navigation positional system has been developed. Optimal design parameters and operating modes of robotic platforms for a local navigation system have been developed.
A new approach to the creation of composite wear-resistant coatings is proposed, which consists in realizing the advantages of combining the effect of mechanical nanocrystallization and mechanochemical reactions in the near-surface layers treated with ultrasonic impact treatment (UIT) in chemically active and inert media. This fundamentally distinguishes the proposed technique from the known methods of synthesis of bulk composite materials and provides more effective, compared to heat treatment and standard UIT schemes, surface hardening.
The regularity of the formation of framework materials in the LaB6-TiB2-Cu systems was Regularities of formation of frame materials in the LaB6-TiB2-Cu system are established. Establishing the influence of technological parameters of the production process in the conditions of spark-plasma sintering and surface modification of ceramic reinforced particles on the structure, mechanical and electrical properties of the refractory frame. Spark-plasma sintering by temperatures of 850 ° C-1100 ° C was obtained composites (LaB6-TiB2) -Cu, with a content of refractory compound 2.5-70 vol.%.
The main threat for increase of the Ukraine’s mobilization potential is global tendence of liberalizetion of civil-military relations. The state structures should control the population to provide the mobilization activities. Unfortunately, it is not relevant to contemporary situation in Ukraine. The most of Ukrainian youth is not ready to protect its homeland or take part in other forms of defence.