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- Publisher
- IOS Press
- Copyright
- Copyright © 2021 © 2021 – IOS Press. All rights reserved
- ISSN
- 1567-2069
- eISSN
- 1875-9262
- DOI
- 10.3233/SFC-204004
- Publisher site
- See Article on Publisher Site
Abstract
In the component operated at elevated temperatures, the life evaluation should be made in consideration of both creep and fatigue (creep-fatigue) such as the linear damage summation rule. However, the concept of creep-fatigue life evaluation has not spread well in the industry. In order to consider the reason, a series of past creep-fatigue research was surveyed, namely experimental methods, life evaluation procedures and strength design guidelines. As a result, it was revealed that the mechanism of creep-fatigue interaction has not been fully clarified yet, which results in obscuring the necessity of creep-fatigue life evaluation. The necessity of creep-fatigue life evaluation was reviewed and consequently it proved to be necessary in two cases. One is the case where the creep-fatigue interaction is significant for some kinds of material, loading modes and temperatures. The other is one where the amount of creep damage is almost the same as that of fatigue damage even though the creep-fatigue interaction is insignificant.
Journal
Strength, Fracture and Complexity – IOS Press
Published: Apr 27, 2021