Load interaction effect on fatigue crack growth in through-wall cracked pipes under large scale yielding: Experimental and numerical investigation

In this work two approaches to the description of short fatigue crack growth rate under large-scale yielding condition were comprehensively tested: (i) plastic component of the J-integral and (ii) Polák model of crack propagation. The ability to predict residual fatigue life of bodies with short initial cracks was studied for stainless steels Sanicro 25 and 304L. Despite their coarse microstructure and very different cyclic stress–strain response, the employed continuum mechanics models were found to give satisfactory results. Finite element modeling was used to determine the J-integrals and to simulate the evolution of crack front shapes, which corresponded to the real cracks observed on the fracture surfaces of the specimens. Residual fatigue lives estimated by these models were in good agreement with the number of cycles to failure of individual test specimens strained at various total strain amplitudes. Moreover, the crack growth rates of both investigated materials fell onto the same curve that was previously obtained for other steels with different properties. Such a “master curve” was achieved using the plastic part of J-integral and it has the potential of being an advantageous tool to model the fatigue crack propagation under large-scale yielding regime without a need of any additional experimental data.

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A numerical investigation of 3-D small-scale yielding fatigue crack growth

Engineering Fracture Mechanics ◽

10.1016/s0013-7944(03)00003-1 ◽

2003 ◽

Vol 70 (17) ◽

pp. 2363-2383 ◽

Cited By ~ 77

Author(s):

S. Roychowdhury ◽

Robert H. Dodds

Keyword(s):

Fatigue Crack ◽

Fatigue Crack Growth ◽

Numerical Investigation ◽

Crack Growth ◽

Small Scale ◽

Small Scale Yielding ◽

Scale Yielding

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Fatigue crack growth under large scale yielding condition: The need of a characteristic length scale

International Journal of Fatigue ◽

10.1016/j.ijfatigue.2017.03.021 ◽

2017 ◽

Vol 102 ◽

pp. 184-201 ◽

Cited By ~ 4

Author(s):

V. Maurel ◽

A. Köster ◽

L. Rémy ◽

M. Rambaudon ◽

D. Missoum-Benziane ◽

...

Keyword(s):

Fatigue Crack ◽

Fatigue Crack Growth ◽

Crack Growth ◽

Large Scale ◽

Characteristic Length ◽

Length Scale ◽

Characteristic Length Scale ◽

Yielding Condition ◽

Scale Yielding

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Fatigue crack growth under large scale yielding condition in a cast automotive aluminum alloy

Materials Science and Engineering A ◽

10.1016/j.msea.2018.03.008 ◽

2019 ◽

Vol 743 ◽

pp. 87-97 ◽

Cited By ~ 2

Author(s):

Sebastien Dezecot ◽

Matthieu Rambaudon ◽

Alain Koster ◽

Fabien Szmytka ◽

Vincent Maurel ◽

...

Keyword(s):

Aluminum Alloy ◽

Fatigue Crack ◽

Fatigue Crack Growth ◽

Crack Growth ◽

Large Scale ◽

Yielding Condition ◽

Scale Yielding

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Characterization of Fatigue Crack Growth in Intermediate and Large Scale Yielding

Journal of Engineering Materials and Technology ◽

10.1115/1.2903373 ◽

1991 ◽

Vol 113 (1) ◽

pp. 15-22 ◽

Cited By ~ 23

Author(s):

R. C. McClung ◽

H. Sehitoglu

Keyword(s):

Fatigue Crack ◽

Fatigue Crack Growth ◽

Crack Growth ◽

Crack Closure ◽

Large Scale ◽

Small Scale ◽

Parameter Estimates ◽

Growth Data ◽

Elastic Plastic ◽

Scale Yielding

Parameters previously proposed for the correlation of elastic-plastic fatigue crack growth data are critically reviewed and compared from a pragmatic engineering standpoint. Commonly employed estimates for the four most common parameters are shown to have essentially the same structure and to be numerically similar, despite their widely differing theoretical backgrounds. The significance of fatigue crack closure for crack growth under these conditions is considered. Elastic-plastic finite element analyses of crack closure are presented and compared with experimental data and simple analytical models. Normalized crack opening stresses are shown to change significantly between small scale and large scale yielding conditions, especially for R= − 1 loading. Different schemes for incorporating closure information into the crack growth parameters are examined, and the consequences of closure for the numerical structure of the parameter estimates are demonstrated. Experimental crack growth data from 1026 and 1070 steels are correlated with estimates of ΔK and ΔJ, both considering and neglecting the effects of crack closure. The data comprise wide ranges of maximum stress, plastic strain amplitude, and crack length, including conditions of small, intermediate, and large scale yielding. Correlations which include an explicit correction for crack closure are shown to be superior.

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