ISSN 3041-1815. Physicochemical Mechanics of Materials. 2026.
Volume 62, Issue 3
Methodology for assessing service life of cylindrical products with an internal bore based on the energy criterion and control of geometric parameters
Ivanytskyi Ya. L. 
Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, Lviv, Ukraine. (https://ror.org/02jv3yx22)
Andreiko I. M.
Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, Lviv, Ukraine. (https://ror.org/02jv3yx22)
Bolkot P. A.
Hetman Petro Sahaidachny National Army Academy, Lviv, Ukraine. (https://ror.org/004n78r59)
Ivakhiv O. S.
Hetman Petro Sahaidachny National Army Academy, Lviv, Ukraine. (https://ror.org/004n78r59)
Kryvtsun V. I.
Hetman Petro Sahaidachny National Army Academy, Lviv, Ukraine. (https://ror.org/004n78r59)
Bubenshchykov R. V.
Hetman Petro Sahaidachny National Army Academy, Lviv, Ukraine. (https://ror.org/004n78r59)
Vankevych P. I.
Hetman Petro Sahaidachny National Army Academy, Lviv, Ukraine. (https://ror.org/004n78r59)
Platonov M. O.
Hetman Petro Sahaidachny National Army Academy, Lviv, Ukraine. (https://ror.org/004n78r59)
Kharchyshyn B. M.
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Poloz O. A.
Hetman Petro Sahaidachny National Army Academy, Lviv, Ukraine. (https://ror.org/004n78r59)
Keywords
cylindrical components with an internal bore; energy fracture criterion; ballistics; projectile motion; service life; strain localization; digital image correlation; remote monitoring of geometric parameters.
Cite as
Ivanytskyi Ya. L., Andreiko I. M., Bolkot P. A., Ivakhiv O. S., Kryvtsun V. I., Bubenshchykov R. V., Vankevych P. I., Platonov M. O., Kharchyshyn B. M., and Poloz O. A. Methodology for assessing service life of cylindrical products with an internal bore based on the energy criterion and control of geometric parameters. Physicochemical Mechanics of Materials. 2026. 62(3), 95-101.
Abstract
A methodology for assessing the service life of cylindrical components with an internal bore based on an energy-based fracture criterion, considering operational factors, is developed. The methodology is based on determining the specific fracture energy of the material and evaluating damage accumulation within a local material volume. Based on experimental investigation results, complete true stress–strain curves were constructed at different temperatures, and the relationship between the specific fracture energy and temperature was established. Digital image correlation method was used to analyze strain localization. In addition, an approach to the remote monitoring of the geometric parameters of cylindrical components based on changes in their external dimensions is proposed. This approach enables the assessment of material damage evolution and the prediction of the remaining service life.