A generalized energy-based fatigue–creep damage parameter for life prediction of turbine disk alloys

Zhu, Shun‐Peng; Huang, Hong‐Zhong; He, Lei; Liu, Yu; Wang, Zhonglai

doi:10.1016/j.engfracmech.2012.04.021

Cited by 146 publications

(86 citation statements)

References 24 publications

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“…According to the irreversibility and randomness of fatigue damages, fatigue life prediction methods can be classified into two groups: deterministic fatigue life prediction methods and probabilistic fatigue life prediction methods [3,[10][11][12]. In this section, the most commonly used deterministic fatigue life prediction methods are reviewed.…”

Section: Fatigue Life Prediction Methodsmentioning

confidence: 99%

Fatigue Life Analysis of Turbine Disks Based on Load Spectra of Aero-engines

Cai

et al. 2016

International Journal of Turbo &Amp; Jet-Engines

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Load spectra of aero-engines reflect the process of operating aircrafts as well as the changes of parameters of aircrafts. According to flight hours and speed cycle numbers of the aero-engines, the relationship between load spectra and the fatigue life of main components of the aero-engines is obtained. Based on distribution function and a generalized stress-strength interference model, the cumulative fatigue damage of aero-engines is then calculated. After applying the analysis of load spectra and the cumulative fatigue damage theory, the fatigue life of the first-stage turbine disks of the aero-engines is evaluated by using the S-N curve and Miner's rule in this paper.

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Section: Fatigue Life Prediction Methodsmentioning

confidence: 99%

Fatigue Life Analysis of Turbine Disks Based on Load Spectra of Aero-engines

Cai

et al. 2016

International Journal of Turbo &Amp; Jet-Engines

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“…It has been reported that 80%-90% of failures in steel structures are related to fatigue and fracture [1][2] . Fatigue is one of the most common failure modes for engineering structures, such as aircrafts, rotorcrafts and aviation transports [3][4] .…”

Section: Introductionmentioning

confidence: 99%

Stochastic fatigue life and reliability prediction based on residual strength

Zuo

Zhu

Gao

et al. 2015

J. Shanghai Jiaotong Univ. (Sci.)

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A randomized approach is developed to solve a deterministic equation. The method uses random deterministic approach to achieve the fatigue life based on residual strength and S-N curve. We propose a oneto-one transformation method to deduce the distribution of fatigue life from the residual strength. The proposed method is simple and effective, and can be used for fatigue life prediction. An example is given to illustrate how the method works.

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“…These models include damage curve-based models [12,13], models for continuum damage mechanics [6,14], models that consider load interactions [13,15], energy-based damage methods [16][17][18], models based on physical property degradation [19,20], ductility exhaustion methods [21,22], and thermodynamic entropy-based theories [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

An improved Corten-Dolan’s model based on damage and stress state effects

Gao

Huang

et al. 2015

J Mech Sci Technol

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The value of exponent d in Corten-Dolan's model is generally considered to be a constant. Nonetheless, the results predicted on the basis of this statement deviate significantly from the real values. In consideration of the effects of damage and stress state on fatigue life prediction, Corten-Dolan's model is improved by redefining the exponent d used in the traditional model. The improved model performs better than the traditional one with respect to the demonstration of a fatigue failure mechanism. Predictions of fatigue life on the basis of investigations into three metallic specimens indicate that the errors caused by the improved model are significantly smaller than those induced by the traditional model. Meanwhile, predictions derived according to the improved model fall into a narrower dispersion zone than those made as per Miner's rule and the traditional model. This finding suggests that the proposed model improves the life prediction accuracy of the other two models. The predictions obtained using the improved Corten-Dolan's model differ slightly from those derived according to a model proposed in previous literature; a few life predictions obtained on the basis of the former are more accurate than those derived according to the latter. Therefore, the improved model proposed in this paper is proven to be rational and reliable given the proven validity of the existing model. Therefore, the improved model can be feasibly and credibly applied to damage accumulation and fatigue life prediction to some extent.

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A generalized energy-based fatigue–creep damage parameter for life prediction of turbine disk alloys

Cited by 146 publications

References 24 publications

Fatigue Life Analysis of Turbine Disks Based on Load Spectra of Aero-engines

Fatigue Life Analysis of Turbine Disks Based on Load Spectra of Aero-engines

Stochastic fatigue life and reliability prediction based on residual strength

An improved Corten-Dolan’s model based on damage and stress state effects

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