Кузьмич, Л. В. та Кузьмич, А. А. та Kuzmych, L. V. та Kuzmych, A. A. (2018) МЕТОДИКА ОЦІНЮВАННЯ РЕСУРСУ СКЛАДНИХ ТЕХНІЧНИХ ОБ’ЄКТІВ. Вісник Національного університету водного господарства та природокористування (2(82)). с. 240-248.

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Анотація

Запропоновано методику оцінювання ресурсу складних технічних об’єктів, що включає побудову математичної моделі функціонування об’єкта для визначення його фактичного технічного стану та залишкового ресурсу.

Title in English

THE METHOD OF EVALUATION OF THE RESOURCE OF COMPLEX TECHNICAL OBJECTS

English abstract

During the operation of any technical objects the aging of their elements occurs as a result of mechanical, thermal, electrical and other physical and chemical processes or under the influence of various kinds of external and internal loads. These processes and factors cause accumulation of damages, the development of defects, irreversible changes in the properties of structural materials and the parameters of elements of technical objects and, consequently, the gradual decrease in their functionality, which subsequently leads to failures and the onset of the limited state, after which further exploitation of such object is impossible. The described approach to constructing a system for determining the actual state and assessing the residual resource involves maintaining the history of the operation of the object, measuring and monitoring a sufficiently larger number of diagnostic parameters, transmission of received data, their processing and interpretation. To determine the actual state and estimate the residual life of structures, it is proposed to simultaneously evaluate several characteristics of the material of the object: the characteristic parameters of the structure of the material, integral parameters of the material, related to strength (for example, hardness), the presence and nature of macrodefects, the degree of corrosion wear of the metal. Limit values of the selected diagnostic parameters are determined by available standards or technical conditions. The dynamics of changes in diagnostic parameters can be monitored and modeled on the basis of the data of periodic inspections of the control object. The space of the diagnostic parameters is broken down into the area, taking into account the rate of change of each of the parameters, while critical areas are determined. The state of the control object is connected to a point in the parameter space. The change in the state of an object is characterized by a trajectory that shows its movement in the parameter space. Getting a trajectory in a critical area indicates an emergency state of the control object.

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