Publication detail

Key Issues With Residual Fatigue Life Estimation In Steels, Highly Scattered And Non-Conservative Thresholds, Crack Closure Mechanisms, Influencing Factors, Relevant Material Properties

VOJTEK, T. KUBÍČEK, R. POKORNÝ, P. JAMBOR, M. NÁHLÍK, L. HUTAŘ, P.

Original Title

Key Issues With Residual Fatigue Life Estimation In Steels, Highly Scattered And Non-Conservative Thresholds, Crack Closure Mechanisms, Influencing Factors, Relevant Material Properties

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

Fatigue crack growth rates for three different steels at room temperature were measured at high and low load ratios. The loading components and mechanisms in terms of effective ΔK, plasticity-, roughness- and oxide-induced crack closure were separated, including the threshold. The plasticity-induced crack closure values were modified according to the material cyclic plastic behaviour. The influencing factors on oxide debris growth such as loading history and air humidity are discussed. A model for simulation of oxide debris growth is introduced. The approach to fatigue crack growth modelling considering all these effects is presented, which contributes to a clarification of the influencing factors and to reaching the aim of transferability of the fatigue crack growth data into applications. It is pointed out that the lack of consideration of oxide-induced crack closure can lead to several non-conservative or misleading scenarios.

Keywords

Crack closure, Threshold, Life prediction, Steel

Authors

VOJTEK, T.; KUBÍČEK, R.; POKORNÝ, P.; JAMBOR, M.; NÁHLÍK, L.; HUTAŘ, P.

Released

19. 6. 2024

Publisher

ENGINEERING INTEGRITY SOCIETY

Location

Farnsfield

ISBN

978-0-9544368-7-2

Book

FATIGUE 2024: Proceedings of the 9th Engineering Integrity Society International Conference on Durability & Fatigue

Pages count

691

URL

https://fatigue2024.com/abstract-book-conference-proceedings/

BibTex

@inproceedings{BUT197004,
  author="Tomáš {Vojtek} and Radek {Kubíček} and Pavel {Pokorný} and Michal {Jambor} and Luboš {Náhlík} and Pavel {Hutař}",
  title="Key Issues With Residual Fatigue Life Estimation In Steels, Highly Scattered And Non-Conservative Thresholds, Crack Closure Mechanisms, Influencing Factors, Relevant Material Properties",
  booktitle="FATIGUE 2024: Proceedings of the 9th Engineering Integrity Society International Conference on Durability & Fatigue",
  year="2024",
  pages="691",
  publisher="ENGINEERING INTEGRITY SOCIETY",
  address="Farnsfield",
  doi="10.5281/zenodo.12723393",
  isbn="978-0-9544368-7-2",
  url="https://fatigue2024.com/abstract-book-conference-proceedings/"
}