Corrosion fatigue mechanism and life prediction of railway axle EA4T steel exposed to artificial rainwater

Li, Hang; Zhang, Jiwang; Wu, Shengchuan; Zhang, Haonan; Fu, Yanan

doi:10.1016/j.engfailanal.2022.106319

Cited by 14 publications

(2 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The crack propagation life is defined as the number of load cycles from crack initiation to structural failure. The generalized Paris model is adopted to predict the crack propagation life, in which two parameters, namely fatigue coefficient C and fatigue index m, are used to represent the influence of the environment on crack propagation [24]. Although C and m can be computed by using experimental results, after referring to the fatigue coefficient and fatigue index of high-strength steel, C = 1 × 10 −10 and m = 2.0 are used in this study.…”

Section: Prediction Of Crack Propagation Lifementioning

confidence: 99%

Fatigue Life Prediction of High Strength Steel with Pitting Corrosion under Three-Point Bending Load

Liu,

Yan,

Sun

2023

Metals

View full text Add to dashboard Cite

Offshore structures often suffer from pitting corrosion, which leads to local stress concentrations, a decrease in the cross-sectional area, the subsequent initiation and gradual propagation of cracks, and a shorter service life as a result. This study aims to investigate the impact of pitting corrosion on the fatigue life endurance of high-strength steel used for offshore structures. To this end, a three-point bending fatigue test was first performed on the specimens to obtain the fatigue test data. Then, a fatigue life prediction model consisting of two terms is proposed based on fracture mechanics, and the fatigue test data are used to verify the reliability of the model. Finally, the experimental results are discussed, and conclusions are drawn. The first term was designed for crack initiation. Combining with the energy theory and slip band dislocation theory, a novel equivalent surface defect model was proposed and used to predict the fatigue life of pitted corroded specimens before crack initiation. The second term is designed for crack propagation. The generalized Paris model is adopted for fatigue life prediction during the crack propagation process after the crack angle is taken as a variable. The mathematical model for predicting three-point bending fatigue life was finally obtained, and the average relative error of the data validation results did not exceed 16%, which proved the reliability of the prediction model.

show abstract

Section: Prediction Of Crack Propagation Lifementioning

confidence: 99%

Fatigue Life Prediction of High Strength Steel with Pitting Corrosion under Three-Point Bending Load

Liu,

Yan,

Sun

2023

Metals

View full text Add to dashboard Cite

show abstract

“…Therefore, scholars have carried out in-depth research on structural fatigue life prediction. Considering the load spectrum, temperature, material, defects and energy laws, a reasonable linear or nonlinear fatigue cumulative damage model is established (Liu and Ma, 2023), such as Wang H (Wang et al ., 2021), Hang L (Li et al ., 2022) and Ruixian X (Xiu et al ., 2021). They all have established a new fatigue life prediction model in combination with various influencing factors.…”

Section: Introductionmentioning

confidence: 99%

A method for modifying octagonal Goodman–Smith fatigue limit diagram

Tang,

Wang,

Liu

et al. 2024

IJSI

View full text Add to dashboard Cite

PurposeIn order to extend the application of the original octagonal Goodman–Smith fatigue limit diagram, which is commonly used for the evaluation of structure fatigue stress in engineering, a modification of it is proposed for the structure made of S355 steel (commonly used in high-speed electric multiple units (EMUs) bogie frame).Design/methodology/approachThe modification is made based on Deutscher Verband für Schweißen und verwandte Verfahren e. V. (DVS) 1612 standard and the γ-P-S-N curve, with consideration of the fatigue evaluation requirements of different survival rates and confidence levels. The verification of the modification is performed for three welded joints and for the comparison with the experimental data.FindingsThe results indicate that the design survival rate, the design safety margin and the fatigue stress evaluation of welded joint types are all improved by using the modified diagram.Originality/valueThere are relatively few studies on modifying octagonal Goodman–Smith fatigue limit diagram. In this paper, a modified diagram is proposed and applied in order to ensure the safety and durability of key welded structures of rail vehicles.

show abstract

Failure causes and hardening techniques of railway axles – A review from the perspective of structural integrity

Gao

Dai²,

Zhu

et al. 2022

Engineering Failure Analysis

View full text Add to dashboard Cite

Corrosion fatigue mechanism and life prediction of railway axle EA4T steel exposed to artificial rainwater

Cited by 14 publications

References 44 publications

Fatigue Life Prediction of High Strength Steel with Pitting Corrosion under Three-Point Bending Load

Fatigue Life Prediction of High Strength Steel with Pitting Corrosion under Three-Point Bending Load

A method for modifying octagonal Goodman–Smith fatigue limit diagram

Failure causes and hardening techniques of railway axles – A review from the perspective of structural integrity

Contact Info

Product

Resources

About