Kärkkäinen, K., Vaara, J., Väntänen, M., Niskanen, I., & Frondelius, T. (2023). The role of plasticity-induced crack closure in the non-propagation prediction of surface defect-initiated cracks near fatigue limit. In International Journal of Fatigue (Vol. 168, p. 107462). Elsevier BV. https://doi.org/10.1016/j.ijfatigue.2022.107462
The role of plasticity-induced crack closure in the non-propagation prediction of surface defect-initiated cracks near fatigue limit
|Author:||Kärkkäinen, Kimmo1; Vaara, Joona2; Väntänen, Miikka3;|
1Materials and Mechanical Engineering, University of Oulu, Pentti Kaiteran katu 1, 90014, Finland
2R&D and Engineering, Wärtsilä, P.O. Box 244, 65101, Vaasa, Finland
3Global Boiler Works Oy, Lumijoentie 8, 90400 Oulu, Finland
|Online Access:||PDF Full Text (PDF, 7 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe20230901115657
|Publish Date:|| 2023-09-01
The purpose of present work is to deepen the understanding of crack propagation, non-propagation, and fatigue limit. Quantitative prediction of fatigue crack non-propagation in constant amplitude loading is attempted through extensive 3D elastic–plastic finite element analysis of near-threshold propagation of short cracks nucleating from surface defects. Level of plasticity-induced crack closure is used to estimate the effective stress intensity factor range, which is evaluated in terms of non-propagation potential. It is shown that plasticity-induced crack closure alone is adequate in producing a local minimum in the development of effective stress intensity factor range, which gives a prerequisite to crack arrest.
International journal of fatigue
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
214 Mechanical engineering
216 Materials engineering
The authors would like to acknowledge the financial support of Business Finland in the form of the research projects ISA University of Oulu 7537/31/2018, and ISA Wärtsilä Dnro 7734/31/2018. Co-funded by the European Union Grant Agreement No. 101058179 ENGINE project.
Data will be made available on request.
© 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).