Indicator of the crack growth resistance as one of the factors for express analysis of damaged pipelines

Keywords

сrack growth, stress intensity factor, defect, pipeline, damage, strength, internal pressure.

Cite as

Bilyy O. L., Domínguez Rodríguez G., and Canto Santana G. I. Indicator of the crack growth resistance as one of the factors for express analysis of damaged pipelines. Physicochemical Mechanics of Materials. 2025. 61(5), 125-129.

https://doi.org/10.15407/pcmm2025.05.125

Abstract

Analytical relations are presented for calculating the stress intensity factor KI and its change dKI/da (regarding the characteristic size of the crack-like defect) at the crack tip in structural elements of structures during crack growth. Several pipeline systems with defects of various shapes and locations under internal pressure are considered. For each structural element with a crack-like defect of a given shape and location, the corresponding dimensionless relations for crack growth dKI/da are used. The proposed approach can serve as a tool for a more detailed analysis of not only pipeline systems, but also of other elements of technical structures.

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