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Analysis of the physical foundations of the build quality of the diagnosis structures based on electronic means of recording and analyzing the parameters of electromagnetic radiation mechanical contact connections DOI:10.15199/48.2017.05.29

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The paper presents the results of research that can be put into the development and research of non-contact rapid method for assessing the quality of the assembly and installation of EM designs. To achieve the objectives, studied the behavior of the mechanical connection of the contact pairs, namely the definition of the contribution of R,L,C parameters contact joints in the modulation level and the spectral composition of the electromagnetic radiation mechanical contact pair Streszczenie. W artykule przedstawiono wyniki badań, które mogą być wprowadzane do rozwoju oraz badań bezdotykowego szybkiego sposobu oceny jakości montażu i instalacji projektów EM. W tym celu zbadano zachowanie połączenia mechanicznego pary styków, mianowicie zdefiniowano wpływ parametrów R, L, C połączeń stykowych na poziom modulacji i skład widmowy promieniowania elektromagnetycznego mechanicznego styku par. (Analiza fizycznych podstaw jakości wykonania struktur diagnostycznych opartych na elektronicznym sposobie rejestrowania i analizowania parametrów promieniowania elektromagnetycznego mechanicznych połączeń stykowych) Keywords: diagnostics, mechanical connections, electromagnetic radiation, interference contact Słowa kluczowe: diagnostyka, połączenia mechaniczne, promieniowanie elektromagnetyczne, styk Introduction In today's design and manufacture of electronic means (EM) for assessing the quality of produced mechanical constructions, comprising testing the level of structural strength parameters are used, usually different types of mechanical influences. In this case, removed from the EM signal via mechanical quantities sensors that contain diagnostic information, it is concluded that the technical condition of the structure, the presence of defects. Among the main parameters that characterize the quality of assembly is the presence of non-compliance with tightening torques of threaded connections. This analysis is associated with the processing of larg[...]

Theoretical investigations of the interaction of acoustic apparatus with technological environment working process DOI:10.15199/48.2019.04.06

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The ultrasonic wave moving from the acoustic apparatus to the technological environment creates compression and dilution zones in it; they change each other during each half-period of oscillation. The general idea of the process of oscillation of any environment is described by the classical theory of acoustics equations. However, the cavitation process is characterized by a much more complicated motion of the dispersed environment. The dispersed environment after obtaining a certain level of energy varies significantly both qualitatively and quantitatively depending on the type of treatment. The process of changing the environment state during its processing is typical. It is the following. The environment ceases to be solid under the influence of energy. Vapor-gas bubbles are beginning to form. They make a significant contribution to changing the rheological properties of the cavernous environment. The process parameters (density, viscosity, etc.) change, it affects the speed of sound velocity, absorption coefficient and wave resistance. It is possible to change the shape and nature of the wave process velocity. Existing dependencies, as a rule, describe the process of cavitation processing by equations with constant coefficients of parameters and rheological properties of environments. Practically there are no studies of the estimation of the environment impact on the technological process and the effects of the interaction between the apparatus and the environment. At the same time, ultrasonic cavitation technologies are widely used in the chemical, food and building industries to process materials with different properties and create new ones. Their efficient use requires consideration of these different properties for setting modes and processing parameters. Therefore, an urgent problem is the search for new methods for studying the change and assessing the impact of these changes on the processing process, including[...]

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