Detail publikace
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.
Anglický název
Key Issues With Residual Fatigue Life Estimation In Steels, Highly Scattered And Non-Conservative Thresholds, Crack Closure Mechanisms, Influencing Factors, Relevant Material Properties
Typ
článek ve sborníku mimo WoS a Scopus
Jazyk
en
Originální abstrakt
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.
Anglický abstrakt
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.
Klíčová slova anglicky
Crack closure, Threshold, Life prediction, Steel
Vydáno
19.06.2024
Nakladatel
ENGINEERING INTEGRITY SOCIETY
Místo
Farnsfield
ISBN
978-0-9544368-7-2
Kniha
FATIGUE 2024: Proceedings of the 9th Engineering Integrity Society International Conference on Durability & Fatigue
Počet stran
691
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",
month="June",
publisher="ENGINEERING INTEGRITY SOCIETY",
address="Farnsfield",
isbn="978-0-9544368-7-2"
}