On the formation of GBF of high-strength steels in the very high cycle fatigue regime

Liu, Y.B.; Yang, Zhi; Li, Y.D.; Chen, S.M.; Li, S.X.; Wang, Hui; Weng, Yuqing

doi:10.1016/j.msea.2008.08.011

Cited by 47 publications

(53 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In particular, the following estimates of c th , g , α th , g , and σ th , g were obtained:

({, \begin{matrix} \overset{c_{th, g}}{true} = 1.979 \cdot 10^{- 3} \\ \overset{α_{th, g}}{true} = 0.2916 \\ \overset{σ_{th, g}}{true} = 0.0194 \end{matrix}),

where

\overset{\cdot}{true}

denotes the parameter estimate. It is worth noting that the estimates

\overset{c_{th, g}}{true}

and

\overset{α_{th, g}}{true}

are in agreement with the values proposed in the literature for c th , g and for α th , g . As shown in Figure , the assumed linear model is in good agreement with the experimental data (11 failures of 12 are inside the 80% confidence interval).…”

Section: Numerical Application To An Experimental Datasetsupporting

confidence: 86%

Estimation of P‐S‐N curves in very‐high‐cycle fatigue: Statistical procedure based on a general crack growth rate model

Paolino

Tridello

Chiandussi

et al. 2017

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Extensive experimental investigations show that internal defects play a key role in the very‐high‐cycle fatigue (VHCF) response of metallic materials and that crack growth from internal defects can take place even if the stress intensity factor associated to the initial defect is below the threshold for crack growth. By introducing a reduction term in the typical formulation of the threshold for crack growth, the authors recently proposed a general phenomenological model, which can effectively describe crack growth from internal defects in VHCF. The model is able to consider the different crack growth scenarios that may arise in VHCF and is enough general to embrace the various weakening mechanisms proposed in the literature for explaining why crack can grow below the threshold. In the present paper, the model is generalized in a statistical framework. The statistical distributions of the crack growth threshold and of the initial defect size are put into the model. The procedure for the estimation of the Probabilistic‐S‐N curves and of the fatigue limit distribution is illustrated and numerically applied to an experimental dataset.

show abstract

“…In particular, the following estimates of c th , g , α th , g , and σ th , g were obtained:

({, \begin{matrix} \overset{c_{th, g}}{true} = 1.979 \cdot 10^{- 3} \\ \overset{α_{th, g}}{true} = 0.2916 \\ \overset{σ_{th, g}}{true} = 0.0194 \end{matrix}),

where

\overset{\cdot}{true}

denotes the parameter estimate. It is worth noting that the estimates

\overset{c_{th, g}}{true}

and

\overset{α_{th, g}}{true}

Section: Numerical Application To An Experimental Datasetsupporting

confidence: 86%

Estimation of P‐S‐N curves in very‐high‐cycle fatigue: Statistical procedure based on a general crack growth rate model

Paolino

Tridello

Chiandussi

et al. 2017

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…In each type of specimen, at least 15 specimens are tested, and total of more than 400 specimens were tested in the present study. Since it costs a long period of time, some experimental results had been reported by our group previously [11,19,20]. All fracture surfaces of failed specimens were examined in an SEM, and the attention was paid to observe the fatigue origins.…”

Section: Materials and Experimental Methodsmentioning

confidence: 99%

“…In previous study [19], a criterion was proposed to identify the role of hydrogen in forming GBF in very high cycle fatigue regime. The total stress intensity factor of the GBF-crack, K T , is defined as…”

Section: The Criterion For the Gbf-crack Growingmentioning

confidence: 99%

“…Fig. 5 is a schematic to illustrate the criterion [19]. (K GBF ) th and K Imax are represented by the black solid, and red dash lines, respectively.…”

Section: The Criterion For the Gbf-crack Growingmentioning

confidence: 99%

“…Suppose that the k H /K Imax is about 0.01 when the k H has no substantial effects on GBF-crack formation. It is known that K Imax at GBF boundary for many high-strength steels are in the range of 2.5-5 MPa m 1/2 [19], therefore can be in the range of 0.025-0.05 MP am 1/2 . Substituting all data above into Eq.…”

Section: Fatigue Strengthmentioning

confidence: 99%

See 2 more Smart Citations

Dependence of fatigue strength on inclusion size for high-strength steels in very high cycle fatigue regime

Liu

Yang

et al. 2009

Materials Science and Engineering: A

Self Cite

View full text Add to dashboard Cite

Effect of Hydrogen on Fatigue Strength of High‐Strength Steels in the VHCF Regime

Yang

et al. 2009

Adv Eng Mater

View full text Add to dashboard Cite

On the formation of GBF of high-strength steels in the very high cycle fatigue regime

Cited by 47 publications

References 28 publications

Estimation of P‐S‐N curves in very‐high‐cycle fatigue: Statistical procedure based on a general crack growth rate model

Estimation of P‐S‐N curves in very‐high‐cycle fatigue: Statistical procedure based on a general crack growth rate model

Dependence of fatigue strength on inclusion size for high-strength steels in very high cycle fatigue regime

Effect of Hydrogen on Fatigue Strength of High‐Strength Steels in the VHCF Regime

Contact Info

Product

Resources

About