Thermo-mechanical fatigue life assessment of aluminium components using the damage rate model of Sehitoglu

Minichmayr, Robert; Riedler, Martin; Winter, George; Leitner, Harald; Eichlseder, Wilfried

doi:10.1016/j.ijfatigue.2007.01.054

Cited by 49 publications

(31 citation statements)

References 9 publications

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“…Salerno et al [9] applied classical criteria for the LCF lifetime estimation of AA7175-T1 aluminum alloy to consider the mean strain effect. Minichmayr et al [10] carried out TMF/LCF lifetime assessment of aluminum alloys using the damage rate model of Sehitoglu. They performed LCF experiments under various strain rates to calibrate the model.…”

Section: Introductionmentioning

confidence: 99%

Effects of strain rate and mean strain on cyclic behavior of aluminum alloys under isothermal and thermo-mechanical fatigue loadings

Azadi¹

2013

International Journal of Fatigue

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Section: Introductionmentioning

confidence: 99%

Effects of strain rate and mean strain on cyclic behavior of aluminum alloys under isothermal and thermo-mechanical fatigue loadings

Azadi¹

2013

International Journal of Fatigue

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“…Under high temperature and severe mechanical loading, the interactive creep–fatigue damage is a key factor determining the fatigue life . For some material, such as the cast aluminium alloy, which is widely used in engine pistons, creep–fatigue nonlinearly coupled damage interaction becomes distinct . In the establishment of stepped‐isothermal fatigue criterion, special attention should be given to the nonlinearly interactive creep–fatigue damage.…”

Section: Stepped‐isothermal Fatigue Analysis Of Engine Pistonmentioning

confidence: 99%

“…18 For some material, such as the cast aluminium alloy, which is widely used in engine pistons, creep-fatigue nonlinearly coupled damage interaction becomes distinct. 19 In the establishment of stepped-isothermal fatigue criterion, special attention should be given to the nonlinearly interactive creepfatigue damage. The authors' previous paper 8 has presented the details of stepped-isothermal fatigue criterion.…”

Section: Fatigue Criterionmentioning

confidence: 99%

Stepped‐isothermal fatigue analysis of engine piston

Zhang

Zuo

Liu

2013

Fatigue Fract Eng Mat Struct

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A B S T R A C T Stepped-isothermal fatigue failure is the main failure mechanism of modern engine pistons under bench reliability test condition. This paper presents a methodology for stepped-isothermal fatigue analysis of engine pistons, which consists of a fatigue criterion, evaluation of temperature and stress distribution by finite element analysis and the final life prediction. The major character of the methodology is the fatigue definition of engine pistons with respect to engine load change cycle and a damage-based fatigue criterion accounting for the nonlinear creep-fatigue damage. Taking as an example, the fatigue life of an engine piston was predicted by the proposed analysis procedures.The analysis results showed that the most critical area was located in the throat edge. Moreover, the proposed methodology can give a relatively accurate and reasonable life prediction for an engine piston under the loading condition of bench reliability test, with a benefit of decreasing the needed component's reliability tests and design time.Keywords creep-fatigue damage interaction; engine pistons; life prediction; steppedisothermal fatigue. N O M E N C L A T U R Eα = heat transfer coefficient A, r, m = material constants of creep damage evolution model D c = creep damage D f = fatigue damage D = total damage h g = average heat transfer coefficient K′ = cyclic strength coefficient m, M = material constants of fatigue damage evolution model N = number of cycles to failure N p = stepped-isothermal fatigue life n′ = cyclic strain-hardening exponent t = creep time t 1 , t 2 = times in stepped-isothermal block loading T = temperature T max = maximal temperature T min = minimal temperature T = gas temperature T g = average gas temperature R p0.2 = yield strength ϕ = crank angle σ a = stress amplitude σ (t) = function of time per cycle ε pa = plastic strain amplitude τ 0 = duration of each operating cycle Correspondence: J. Liu,

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“…Specifically, Kachanov model is employed to predict the creep lifetime [9] and Chaboche model is applied to characterize the fatigue lifetime [10]. The predicted creep and fatigue lifetime is compared with the experimental data.…”

Section: Introductionmentioning

confidence: 99%

Creep and fatigue lifetime analysis of directionally solidified superalloy and its brazed joints based on continuum damage mechanics at elevated temperature

et al. 2013

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Thermo-mechanical fatigue life assessment of aluminium components using the damage rate model of Sehitoglu

Cited by 49 publications

References 9 publications

Effects of strain rate and mean strain on cyclic behavior of aluminum alloys under isothermal and thermo-mechanical fatigue loadings

Effects of strain rate and mean strain on cyclic behavior of aluminum alloys under isothermal and thermo-mechanical fatigue loadings

Stepped‐isothermal fatigue analysis of engine piston

Creep and fatigue lifetime analysis of directionally solidified superalloy and its brazed joints based on continuum damage mechanics at elevated temperature

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