Fatigue crack propagation near a corrosion pit in a HSS specimen

0579333 - ÚFM 2025 RIV NL eng J - Journal Article
Malíková, Lucie - Miarka, Petr
Fatigue crack propagation near a corrosion pit in a HSS specimen.
Theoretical and Applied Fracture Mechanics. Roč. 129, FEB (2024), č. článku 104214. ISSN 0167-8442. E-ISSN 1872-7638
R&D Projects: GA ČR(CZ) GA21-14886S
Institutional support: RVO:68081723
Keywords : Corrosion pit * Fatigue crack * Finite element method * High-strength steel
OECD category: Pure mathematics
Impact factor: 5.3, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0167844223004779?via%3Dihub

Corrosion and fatigue are very common forms of metal degradation, and thus an aspect of the complex issues involved is analysed within this work. A rectangular specimen with a surface fatigue crack and a surface corrosion pit subjected to remote tensile loading was modelled via the finite element method in order to assess the crack behaviour for various configurations of both the crack and the pit. A perpendicular crack was considered along with an angled crack, and the basic fracture parameters have been determined and discussed regarding the influence of the corrosion pit on further crack propagation. Additionally, selected fracture criteria have been applied in their classical one-parameter as well as generalised multi-parameter form to estimate the angle of further crack propagation. The results obtained are discussed thoroughly, and it is proved that the larger the corrosion pit, and the closer it is to the crack, the higher its effect on the fatigue crack behaviour is.
Permanent Link: https://hdl.handle.net/11104/0349500