Effects of mixed-mode overloading on the mixed-mode I+II fatigue crack growth

Seifi, Rahman; Eshraghi, Mohammad Amir

doi:10.1007/s00419-013-0731-z

Cited by 13 publications

(4 citation statements)

References 22 publications

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“…This has also been proven by more recent studies [17,19,[21][22][23][24][25]. The retardation effect occurs in three stages as can be seen in Fig.…”

Section: Single Olsupporting

confidence: 64%

“…A second parameter influencing the FCGR is the R-ratio. When the R-ratio is increased, the retardation effect will diminish [1,[17][18][19][20][21][22][23][24][25]. The influence of the ∆K BL level was found inconsistent [1].…”

Section: Single Olmentioning

confidence: 95%

“…4 The main parameter influencing the FCGR (or da/dN) is the Over Load Ratio (OLR). Increasing the OLR value will result in an increase of N D , a D and ∆a OL , and in a lower minimum da/dN level as reported in [1,[17][18][19][20][21][22][23][24][25][26][27][28][29]. A second parameter influencing the FCGR is the R-ratio.…”

Section: Single Olmentioning

confidence: 99%

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Effects of variable amplitude loading on fatigue life

Laseure

Schepens

Micone

et al. 2015

SCAD

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This paper is a review of published research on variable amplitude loading of steels. The use of service spectra for different industrial sectors and specifically for offshore applications is first considered. Constant amplitude fatigue failure models are not representative for these applications. The JONSWAP spectrum shows potential to be used as service spectrum for offshore structures. Further investigation of variable amplitude fatigue is needed to get insight in the various phenomena linked to the variable amplitude. Observed trends in fatigue crack growth rate in variable amplitude fatigue tests on steels, such as the effects of overloads and underloads (occurring as single events, sequential events or block loadings), are discussed. Furthermore, suggestions of the underlying physical phenomena behind the load interaction effects due to variable amplitude loading are presented. It can be concluded that the plasticity induced crack closure mechanism is the most profound explanation for the acceleration effect in overloads and the retardation effect observed in underloads.

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“…This has also been proven by more recent studies [17,19,[21][22][23][24][25]. The retardation effect occurs in three stages as can be seen in Fig.…”

Section: Single Olsupporting

confidence: 64%

Section: Single Olmentioning

confidence: 95%

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Effects of variable amplitude loading on fatigue life

Laseure

Schepens

Micone

et al. 2015

SCAD

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“…Experimental and numerical study on fatigue crack growth behaviour of aluminium alloy under mixed-mode loading were carried out to understand the influence on crack growth rate at different stress ratios and the effect on crack closure [6]. Effect of overloading on the fatigue crack growth behaviour under mixed-mode condition was studied through FE modeling of Compact Tension specimens [13]. XFEM and cyclic cohesive zone model were combined and implemented into commercial finite element software to study the fatigue crack propagation under mixed-mode loading conditions [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mode-mixity on Fatigue Crack Growth

Bharadwaj

Banerjee

2014

Procedia Engineering

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In an attempt to understand the effect of mode-mixity on the growth of a nominal defect under repetitive sub-critical loads, fatigue experiments are conducted on an Aluminium alloy at different mode-mixities. Three-dimensional finite element simulations akin to experiments are performed at different crack lengths and mode-mixities to study their effect on the opening stress, stress-state characterised by triaxiality parameter and equivalent plastic strain, at the mid-section of the model specimen.

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