Growth of small cracks and prediction of lifetime in high-temperature alloys

Rémy, Luc; Alam, Adil; Haddar, Nader; Köster, Alain; Marchal, Nicolas

doi:10.1016/j.msea.2006.08.133

Cited by 55 publications

(24 citation statements)

References 21 publications

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“…Under LCF conditions, this approach was proven to have a physically bases sound when the life is mainly controlled by micro-crack growth [21,[23][24][25][26][27][28][29]. This approach is robust even though some modifications are sometimes necessary to account for the mean stress effects or multi-axial loading [30][31][32][33] and when oxidation or creep interacts with fatigue [21,[34][35].…”

Section: Fatigue Damage Criterionmentioning

confidence: 99%

Thermal fatigue analysis of automotive Diesel piston: Experimental procedure and numerical protocol

Szmytka

Salem

Rézaï-Aria

et al. 2015

International Journal of Fatigue

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Section: Fatigue Damage Criterionmentioning

confidence: 99%

Thermal fatigue analysis of automotive Diesel piston: Experimental procedure and numerical protocol

Szmytka

Salem

Rézaï-Aria

et al. 2015

International Journal of Fatigue

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“…16) that Δ J and J op curves display a maximum which corresponds to a crack length range between 3 and 5 mm. The calculated values of Δ J and J op will be used to estimate crack growth rate using the modified Paris’ law 21–23 as follows (): where C and m are two coefficients related to the material and its environment.…”

Section: Fatigue Analysismentioning

confidence: 99%

Numerical computation of thermal fatigue crack growth of cast iron

Ktari¹,

Haddar²,

Köster³

et al. 2011

Fatigue &Amp; Fracture of Engineering Materials &Amp; Structures

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International audienceThermal fatigue experiments have been carried out on a single-edge wedge specimen of the SiMo cast iron to reproduce the conditions experienced by exhaust manifolds during operation. The leading edge temperature was cycled between 20 and 750 °C and the temperature distribution on the specimen surface was measured by thermocouples throughout the thermal cycle. Due to the complexity of the loading and interaction effects between cracks, numerical simulation of crack propagation and shielding effects in multicracked structures appear a useful way to analyze this problem. Therefore, 3D thermo-mechanical computation was performed with the finite element code ABAQUS of both un-cracked and multicracked specimen. This computation allowed us to assess the temperature, stresses and strains distribution over a thermal fatigue specimen and the estimation of the crack growth rate using the energy criteria based on the calculation of the J-integral crack tip

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“…Thermal fatigue is still a major issue in many industrial activities, as proven by very recent publications on this subject in aircraft [1,2], automotive [3,4], metal forming [5][6][7], braking [8][9][10], electronic [11,12] and nuclear [13][14][15][16] industries.…”

Section: Introductionmentioning

confidence: 99%

A probabilistic model to predict the formation and propagation of crack networks in thermal fatigue

Malesys

Vincent

Hild

2009

International Journal of Fatigue

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A probabilistic model is presented to predict the formation and propagation of crack networks in thermal fatigue. It is based on a random distribution of sites where cracks initiate and on the shielding phenomenon corresponding to the relaxed stress field created around cracks. Currently, the model considers only heterogeneous uniaxial stress loading even if thermal fatigue is multiaxial. However, the first simulations on a uniaxial mechanical loading representative of the stress gradient that appears in thermal fatigue shocks are in qualitative agreement with experimental results. The larger the stress amplitude, the denser the crack network and the smaller the crack sizes.

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Growth of small cracks and prediction of lifetime in high-temperature alloys

Cited by 55 publications

References 21 publications

Thermal fatigue analysis of automotive Diesel piston: Experimental procedure and numerical protocol

Thermal fatigue analysis of automotive Diesel piston: Experimental procedure and numerical protocol

Numerical computation of thermal fatigue crack growth of cast iron

A probabilistic model to predict the formation and propagation of crack networks in thermal fatigue

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