Methods for assessing stress-strain states of brittle strain sensitive coatings
https://doi.org/10.31660/0445-0108-2023-2-116-128
Abstract
Early prediction of an emergency situation is of great importance, especially for objects with high accident costs. This is due to the fact that, according to the signals of early diagnosis, it is possible to stop the development of an emergency before it enters an irreversible phase, when it is already necessary to consider the consequences of the accident. There are two important aspects to this work. Firstly, the timely detection of the signal at the beginning of the development of abnormal operation of the equipment; secondly, it is necessary to clearly filter out false signals, since they can lead to unmotivated shutdown of the equipment and economic losses.
The way out of this situation is seen in the combination of different methods, so that different interferences, which are fundamental for one method, have little effect on the results given by another method. This approach, together with appropriate processing of the results, will provide reliable data at the beginning of the emergency development of the process.
This article discusses highly sensitive methods of early diagnosis to determine the time of safe operation of equipment when a signal of the onset of an emergency process is detected. This al-lows an informed decision to be made in the presence of an emergency development model: to stop work immediately or to continue operating the equipment without serious risk until the next scheduled repair.
The article considers combined methods of diagnosis: fragile strain-sensitive coatings, acoustic emission and aerosol particle generation, technical vision.
A methodological evaluation of the physical and mechanical properties of the coatings, the relationship between the stress and strain values and the parameters of the output signals of the devices under laboratory conditions was carried out on beams of various profiles, which made it possible to improve the accuracy of the measurements and the quality of the new strain-sensitive coatings.
About the Authors
V. N. Permyakov
Industrial University of Tyumen
Russian Federation
Russian Federation
Vladimir N. Permyakov, Doctor of Engineering, Professor at the Department of Technosphere Safety
Tyumen
N. A. Makhutov
Institute of Machines Sciense named after A.A. Blagonravov of the Russian Academy of Sciences
Russian Federation
Russian Federation
Nikolay A. Makhutov, Doctor of Engineering, Professor, Corresponding Member of the Russian Academy of Sciences, Chief Researcher
Moscow
V. L. Martynovich
Institute for Applied Research of the Gas Industry
Russian Federation
Russian Federation
Vladimir L. Martynovich, Candidate of Engineering, Head of the Department of Environmental Protection, Safety, Civil Defense and Emergencies
Tyumen
S. A. Erenchinov
Industrial University of Tyumen
Russian Federation
Russian Federation
Sergey A. Erenchinov, Candidate of Engineering, Associate Professor at the Department of Building Structures
Tyumen
L. A. Kazantseva
Industrial University of Tyumen
Russian Federation
Russian Federation
Lyudmila A. Kazantseva, Candidate of Geology, Head of the Laboratory of the Department of Technosphere Safety
Tyumen
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Review
For citations:
Permyakov V.N., Makhutov N.A., Martynovich V.L., Erenchinov S.A., Kazantseva L.A. Methods for assessing stress-strain states of brittle strain sensitive coatings. Oil and Gas Studies. 2023;(2):116-128. (In Russ.) https://doi.org/10.31660/0445-0108-2023-2-116-128
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