Abstract

The current state of technical diagnosis of firearms barrel channels in Ukraine is analyzed. It is determined that for the technical diagnosis of firearms barrel channels, the armed forces of Ukraine mainly use mechanical and optical measuring instruments. The disadvantages of these measuring instruments include their limited ability to quickly and reliably determine the technical condition of barrels in the field. A way to overcome such limitations is noted, which consists in the use of a promising diagnostic complex based on a laser triangulation tool for measuring the geometric characteristics of the barrel channel. It is shown that, despite the existing approaches to the construction of the measuring channel of such a measuring instrument, the problem of the lack of scientific foundations for the creation of a computing component of the diagnostic complex, which should provide an automated search for damaged areas of the barrel channel and identification of existing defects, remains unresolved.

The paper investigates such defects of the barrel bore as crack, sink, and swelling. It is established that these defects have characteristic geometric features that should be described by algebraic equations of surfaces in the Cartesian coordinate system. The mathematical modeling of the bore defects was performed. The model of each of the defects is composed of surfaces corresponding to the damaged and undamaged areas that share a common boundary. The concepts of the base, contour, and axes of the model, as well as the dimensions of the defect, are formalized. To ensure a smooth transition between the damaged and undamaged areas, a cosine function (sink, swelling) and an argument module (crack) were used to accurately reproduce the geometry of the damage. To confirm the conformity of the proposed mathematical models of the barrel channel defects to typical real defects, their three-dimensional visualization was performed.

Ключові слова: barrel, bore, technical diagnosis, bore defect, mathematical model, sink, crack, swelling.

FULL TEXT (in Ukrainian)

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The article was submitted 05.05.2025
© Kriukov, O., Silin, H., 2025
Creative Commons Attribution 4.0 International License (CC BY 4.0)