Assessing of the Life Time of a Shaft with a Crack in Hydrogen

A theoretical-experimental approach for predicting the kinetics of fatigue crack growth and determining the life time of the responsible elements of structures in hydrogen is proposed. Based on the created calculation model of fatigue crack growth, experimentally constructed kinetic diagrams of fati...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2023-09, Vol.59 (2), p.191-197
Main Authors: Hembara, O. V., Holian, O. M., Chepil, O. Ya, Paliukh, V. M., Sapuzhak, Ya. I., Soviak, I. M.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Crack propagation
Fatigue cracks
Fatigue failure
Fracture mechanics
Hydrogen
Materials Science
Metal fatigue
Rotors
Solid Mechanics
Structural Materials
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Summary:A theoretical-experimental approach for predicting the kinetics of fatigue crack growth and determining the life time of the responsible elements of structures in hydrogen is proposed. Based on the created calculation model of fatigue crack growth, experimentally constructed kinetic diagrams of fatigue failure of 35KhN3MFA steel, the residual life of the rotor shaft of the turbo generator, weakened by a surface semi-elliptical crack in air, and in gaseous hydrogen environment, are determined. Hydrogen reduces the residual life of the rotor shaft by two orders of magnitude in hydrogen, compared to its residual life in air.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-024-00762-1