Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep
Holding periods of 300 and 3600 s in a trapezoidal load cycle are shown to increase the crack growth rate dozens of times for alloy EP962 and several-fold for alloy EP742 at a temperature of 973 K. It is demonstrated that in the presence of the first portion on the creep crack growth diagram, whereo...
Збережено в:
| Дата: | 2009 |
|---|---|
| Автори: | , , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Інститут проблем міцності ім. Г.С. Писаренко НАН України
2009
|
| Назва видання: | Проблемы прочности |
| Теми: | |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/48469 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep / V.V. Pokrovskii, V.G. Sidyachenko, V.N. Ezhov, S.B. Kulishov // Проблемы прочности. — 2009. — № 1. — С. 105-112. — Бібліогр.: 19 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
irk-123456789-48469 |
|---|---|
| record_format |
dspace |
| spelling |
irk-123456789-484692013-08-20T06:48:12Z Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep Pokrovskii, V.V. Sidyachenko, V.G. Ezhov, V.N. Kulishov, S.B. Научно-технический раздел Holding periods of 300 and 3600 s in a trapezoidal load cycle are shown to increase the crack growth rate dozens of times for alloy EP962 and several-fold for alloy EP742 at a temperature of 973 K. It is demonstrated that in the presence of the first portion on the creep crack growth diagram, whereon the crack growth rate decreases, the crack growth kinetics for a trapezoidal load cycle can be predicted using the hypothesis of the linear summation of fatigue and creep crack growth rates provided that the peculiarities of the first portion of the creep crack growth diagram are taken into account. Empirical approaches are proposed for determining the mean crack velocity in the first portion of the creep crack growth diagram. Установлено, что наличие участков выдержки 300 и 3600 с в трапецевидном цикле нагружения при температуре 973 К приводит к повышению скорости роста трещины. Показано, что при наличии на диаграмме роста трещины ползучести первого участка, на котором наблюдается снижение скорости роста трещины, можно прогнозировать кинетику ее роста для трапецевидного цикла нагружения на основании гипотезы линейного суммирования скоростей трещин усталости и ползучести. При этом необходимо учитывать особенности первого участка диаграммы роста трещин ползучести. Предложены эмпирические подходы к определению средней скорости роста трещины на первом участке диаграммы. 2009 Article Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep / V.V. Pokrovskii, V.G. Sidyachenko, V.N. Ezhov, S.B. Kulishov // Проблемы прочности. — 2009. — № 1. — С. 105-112. — Бібліогр.: 19 назв. — англ. 0556-171X http://dspace.nbuv.gov.ua/handle/123456789/48469 539.4 en Проблемы прочности Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Научно-технический раздел Научно-технический раздел |
| spellingShingle |
Научно-технический раздел Научно-технический раздел Pokrovskii, V.V. Sidyachenko, V.G. Ezhov, V.N. Kulishov, S.B. Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep Проблемы прочности |
| description |
Holding periods of 300 and 3600 s in a trapezoidal load cycle are shown to increase the crack growth rate dozens of times for alloy EP962 and several-fold for alloy EP742 at a temperature of 973 K. It is demonstrated that in the presence of the first portion on the creep crack growth diagram, whereon the crack growth rate decreases, the crack growth kinetics for a trapezoidal load cycle can be predicted using the hypothesis of the linear summation of fatigue and creep crack growth rates provided that the peculiarities of the first portion of the creep crack growth diagram are taken into account. Empirical approaches are proposed for determining the mean crack velocity in the first portion of the creep crack growth diagram. |
| format |
Article |
| author |
Pokrovskii, V.V. Sidyachenko, V.G. Ezhov, V.N. Kulishov, S.B. |
| author_facet |
Pokrovskii, V.V. Sidyachenko, V.G. Ezhov, V.N. Kulishov, S.B. |
| author_sort |
Pokrovskii, V.V. |
| title |
Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep |
| title_short |
Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep |
| title_full |
Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep |
| title_fullStr |
Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep |
| title_full_unstemmed |
Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep |
| title_sort |
theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep |
| publisher |
Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| publishDate |
2009 |
| topic_facet |
Научно-технический раздел |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/48469 |
| citation_txt |
Theoretical-experimental model for predicting crack growth rate in structural alloys under combined action of fatigue and creep / V.V. Pokrovskii, V.G. Sidyachenko, V.N. Ezhov, S.B. Kulishov // Проблемы прочности. — 2009. — № 1. — С. 105-112. — Бібліогр.: 19 назв. — англ. |
| series |
Проблемы прочности |
| work_keys_str_mv |
AT pokrovskiivv theoreticalexperimentalmodelforpredictingcrackgrowthrateinstructuralalloysundercombinedactionoffatigueandcreep AT sidyachenkovg theoreticalexperimentalmodelforpredictingcrackgrowthrateinstructuralalloysundercombinedactionoffatigueandcreep AT ezhovvn theoreticalexperimentalmodelforpredictingcrackgrowthrateinstructuralalloysundercombinedactionoffatigueandcreep AT kulishovsb theoreticalexperimentalmodelforpredictingcrackgrowthrateinstructuralalloysundercombinedactionoffatigueandcreep |
| first_indexed |
2023-10-18T18:10:00Z |
| last_indexed |
2023-10-18T18:10:00Z |
| _version_ |
1796143486269915136 |