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Full text
Total number
Full text
Number of local repositories
Full text
0224U000190,
0121U108957
,
Development of an energy approach for estimating the strength and durability of structural elements under complex loads in a hydrogen environment
Ivanytskyi Yaroslav L., д.т.н.
03-01-2024
Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine
It was established that the metal gas hydrogenation has different effects on the concentration of residual hydrogen in strain-free and pre-strained samples. The highest concentration is reached in 48-96 hours of hydrogenation under the conditions of pre-strained samples up to 75% and equals 43.9 ppm. Встановлено, що після 6-ти місяців вилежування при кімнатній температурі водень повIt was established that after 6 months of air exposure at room temperature, hydrogen completely diffused. In pre-strained samples up to 75%, the hydrogen concentration practically did not change and remained in the structural defects. It has been established that a significant reduction in the fracture energy during preliminary elastoplastic deformation as a result of embrittlement of the material can be used in the development of improved fragmentation of shell structures instead of cutting mechanical concentrators. The value of the degree of damage to the metal on the tubular samples was determined based on the change in the strain energy, which is determined using the true diagram of the fracture of the pipe material and the determined value of the strain on the outer surface under operating loads, using the ODIC method, it is possible to estimate the true wall thickness and the degree of damage.
Yaroslav Ivanytskyi
Vergun Igor A.
Hvozdiuk Mykola M.
Hembara Oksana V.
Hrynenko Mykhajlo V.
Sapuzhak Yaroslav І.
Chaban Petro M.
Chepilʹ Olʹha Ya.
Chernysh Mariya Stepanivna
Shtayura Stepan T.
2024-01-03
Updated: 2025-12-07
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