Titanium alloy corrosion fatigue crack growth rates prediction: peridynamics based numerical approach

Olena Karpenko; Selda Oterkus; Erkan Oterkus

doi:10.1016/j.ijfatigue.2022.107023

Titanium alloy corrosion fatigue crack growth rates prediction: peridynamics based numerical approach

Olena Karpenko, Selda Oterkus, Erkan Oterkus

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Abstract

This study presents a numerical approach for modelling the Corrosion Fatigue Crack Growth (CFCG) in conventional casting and additively manufactured Ti6Al4V alloys. The proposed numerical model, based on Peridynamics (PD), combines the PD Fatigue Crack Growth (FCG) model and PD diffusion model in order to couple the mechanical and diffusion fields existing in the material due to the impact of environmental fatigue. The mechanical field is responsible for the characterisation of the changes to the structure due to the fatigue loading conditions. The diffusion field is based on the modelling of the adsorbed-hydrogen Stress Corrosion Cracking (SCC), in particular, the Hydrogen Embrittlement (HE) model is considered. The proposed approach has been validated using experimental data available in the literature showing the capability of the tool to predict the CFCG rates.

Original language	English
Article number	107023
Number of pages	12
Journal	International Journal of Fatigue
Volume	162
Early online date	22 May 2022
DOIs	https://doi.org/10.1016/j.ijfatigue.2022.107023
Publication status	Published - 1 Sept 2022

Keywords

peridynamics
corrosion fatigue
crack growth prediction
stress corrosion cracking
hydrogen embrittlement
additive manufacturing

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10.1016/j.ijfatigue.2022.107023Licence: CC BY 4.0

Karpenko-etal-IJF-2022-Titanium-alloy-corrosion-fatigue-crack-growth-rates-predictionFinal published version, 7.04 MBLicence: CC BY 4.0

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title = "Titanium alloy corrosion fatigue crack growth rates prediction: peridynamics based numerical approach",

abstract = "This study presents a numerical approach for modelling the Corrosion Fatigue Crack Growth (CFCG) in conventional casting and additively manufactured Ti6Al4V alloys. The proposed numerical model, based on Peridynamics (PD), combines the PD Fatigue Crack Growth (FCG) model and PD diffusion model in order to couple the mechanical and diffusion fields existing in the material due to the impact of environmental fatigue. The mechanical field is responsible for the characterisation of the changes to the structure due to the fatigue loading conditions. The diffusion field is based on the modelling of the adsorbed-hydrogen Stress Corrosion Cracking (SCC), in particular, the Hydrogen Embrittlement (HE) model is considered. The proposed approach has been validated using experimental data available in the literature showing the capability of the tool to predict the CFCG rates. ",

keywords = "peridynamics, corrosion fatigue, crack growth prediction, stress corrosion cracking, hydrogen embrittlement, additive manufacturing",

author = "Olena Karpenko and Selda Oterkus and Erkan Oterkus",

year = "2022",

month = sep,

day = "1",

doi = "10.1016/j.ijfatigue.2022.107023",

language = "English",

volume = "162",

journal = "International Journal of Fatigue",

issn = "0142-1123",

}

TY - JOUR

T1 - Titanium alloy corrosion fatigue crack growth rates prediction

T2 - peridynamics based numerical approach

AU - Karpenko, Olena

AU - Oterkus, Selda

AU - Oterkus, Erkan

PY - 2022/9/1

Y1 - 2022/9/1

N2 - This study presents a numerical approach for modelling the Corrosion Fatigue Crack Growth (CFCG) in conventional casting and additively manufactured Ti6Al4V alloys. The proposed numerical model, based on Peridynamics (PD), combines the PD Fatigue Crack Growth (FCG) model and PD diffusion model in order to couple the mechanical and diffusion fields existing in the material due to the impact of environmental fatigue. The mechanical field is responsible for the characterisation of the changes to the structure due to the fatigue loading conditions. The diffusion field is based on the modelling of the adsorbed-hydrogen Stress Corrosion Cracking (SCC), in particular, the Hydrogen Embrittlement (HE) model is considered. The proposed approach has been validated using experimental data available in the literature showing the capability of the tool to predict the CFCG rates.

AB - This study presents a numerical approach for modelling the Corrosion Fatigue Crack Growth (CFCG) in conventional casting and additively manufactured Ti6Al4V alloys. The proposed numerical model, based on Peridynamics (PD), combines the PD Fatigue Crack Growth (FCG) model and PD diffusion model in order to couple the mechanical and diffusion fields existing in the material due to the impact of environmental fatigue. The mechanical field is responsible for the characterisation of the changes to the structure due to the fatigue loading conditions. The diffusion field is based on the modelling of the adsorbed-hydrogen Stress Corrosion Cracking (SCC), in particular, the Hydrogen Embrittlement (HE) model is considered. The proposed approach has been validated using experimental data available in the literature showing the capability of the tool to predict the CFCG rates.

KW - peridynamics

KW - corrosion fatigue

KW - crack growth prediction

KW - stress corrosion cracking

KW - hydrogen embrittlement

KW - additive manufacturing

U2 - 10.1016/j.ijfatigue.2022.107023

DO - 10.1016/j.ijfatigue.2022.107023

M3 - Article

SN - 0142-1123

VL - 162

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 107023

ER -

Titanium alloy corrosion fatigue crack growth rates prediction: peridynamics based numerical approach

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Keywords

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