Effect of mixed-mode loading on surface crack propagation in steels

Yarullin, R.R.; Yakovlev, M.M.; Boychenko, N.V.; Lyadov, N.M.

doi:10.1016/j.engfracmech.2023.109717

Cited by 3 publications

(4 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, the importance of K eq in fatigue crack growth has been acknowledged in aluminum samples [9,10] and both aluminum and steel specimens [11]. Additionally, numerical studies [12] investigated the effects of mode-mixity in surface cracks, observing a difference in crack growth rate under mixed modes in steel. Moreover, Berrios-Barcena et al [13] reproduced FCG in a double cantilever sample of low-carbon steel.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and Numerical Evaluation of Equivalent Stress Intensity Factor Models under Mixed-Mode (I+II) Loading

Gómez-Gamboa,

Díaz-Rodríguez,

Mantilla-Villalobos

et al. 2024

Infrastructures

View full text Add to dashboard Cite

This study determines the equivalent stress intensity factor (SIF) model that best fits the experimental behavior of low-carbon steel under mixed modes (I and II). The study assessed Tanaka, Richard, and Pook’s equivalent SIF models. The theoretical values used for comparison correspond to the experimental results in a modified C(T) geometry by machining a hole ahead of the crack tip subjected to fatigue loads with a load ratio of R = 0.1. The comparison involved the SIF for six experimental points and the values computed through the numerical simulation. The Paris, Klesnil, and Modified Forman–Newman crack growth models were used with each equivalent SIF to analyze the prediction in the estimated number of cycles. The Klesnil model showed the closest prediction since the error between the calculated and experimentally recorded number of cycles is the lowest. However, the material behavior reflects a reduced crack propagation rate attributed to plasticity in the crack tip. The results suggest that Asaro equivalent SIF conservatively estimates the element lifespan with increasing errors from 2.3% at the start of growth to 27% at the end of the calculation. This study sheds light on the accuracy and limitations of different equivalent SIF models, providing valuable insights for structural integrity assessments in engineering applications.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Here is where the models to quantify the combination of SIF under mixed modes come into play [5]. Moreover, FCG is usually conducted using analytical methods for simple loading cases, numerical methods [12][13][14], a combination of both, or even with non-parametric models [22]. A review of some of them can be found in [23].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Evaluation of Equivalent Stress Intensity Factor Models under Mixed-Mode (I+II) Loading

Gómez-Gamboa,

Díaz-Rodríguez,

Mantilla-Villalobos

et al. 2024

Infrastructures

View full text Add to dashboard Cite

show abstract

“…Moreover, FCG is usually conducted using analytical methods for simple loading cases, numerical methods [11], [12], [13], a combination of both, or even with non-parametric models [21]. A review of some of them can be found in [22].…”

Section: Introductionmentioning

confidence: 99%

“…Results suggest that Asaro equivalent SIF conservatively estimates the element lifespan with increasing errors from 2.3% at the start of growth to 27 % at the end of the calculation.Keywords: equivalent stress intensity factor; low-carbon steel; Mixed Mode I/II; finite element method (FEM); boundary element method Recently, the importance of Keq in fatigue crack growth has been acknowledged in Aluminum samples [9] and both Aluminum and steel specimens [10]. Additionally, numerical studies [11] investigated the effects of mode-mixity of surface cracks, observing a difference in crack growth rate under mixed mode in steel. Moreover, [12] reproduced FCG in a double cantilever sample of low-Disclaimer/Publisher's Note: The statements, opinions, and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s).…”

mentioning

confidence: 99%

Experimental and Numerical Evaluation of Equivalent Stress Intensity Factor Models under Mixed-Mode (I+II) Loading

Gómez-Gamboa,

Díaz-Rodríguez,

Mantilla-Villalobos

et al. 2024

Preprint

View full text Add to dashboard Cite

This study determines the equivalent stress intensity factor (SIF) model that best fits the experimental behavior of low-carbon steel under mixed mode (I and II). The study assessed Tanaka, Richard, and Pook's equivalent SIF models. The theoretical values used for comparison correspond to experimental results in a modified C(T) geometry by machining a hole ahead of the crack tip subjected to fatigue loads with a load ratio of R = 0.1. The comparison involved the SIF for six experimental points and the values computed through the numerical simulation. The Paris, Klesnil, and modified Forman-Newman crack growth models were used with each equivalent SIF to analyze the prediction in the estimated number of cycles. The Klesnil model showed the closest prediction since the error between the calculated and experimentally recorded number of cycles is the lowest. However, the material behavior reflects a reduced crack propagation rate attributed to plasticity in the crack tip. Results suggest that Asaro equivalent SIF conservatively estimates the element lifespan with increasing errors from 2.3% at the start of growth to 27 % at the end of the calculation.

show abstract