Methodology for assessing service life of cylindrical products with an internal bore based on the energy criterion and control of geometric parameters

Keywords

cylindrical components with an internal bore; service life assessment; energy-based fracture criterion; numerical modelling; local deformation; digital speckle image correlation; geometric parameters; remote monitoring of geometric dimensions; accuracy.

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 service life assessment of cylindrical components with an internal bore based on an energy-based fracture criterion, taking into account operational factors, is developed. The methodology is based on determining the specific fracture energy of the material, numerical modelling of the stress-strain state, and evaluating damage accumulation within a local material volume. Based on experimental investigations, complete true stress-strain curves were constructed at different temperatures, and the relationship between the specific fracture energy and temperature was established. Digital speckle image correlation was employed to analyze local deformation, providing high accuracy in strain-field measurements. In addition, an approach to the remote monitoring of geometric dimensions of cylindrical components with an internal bore based on changes in their geometric parameters is proposed. The proposed methodology enables the assessment of material damage evolution and the prediction of the remaining service life.

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