Thermo-mechanical fatigue approach to predict tooling life in high temperature metal forming processes

Escolán, A.; Bielsa, J. M.; Hernández-Gascón, Belén; Jiménez, Miguel; López, J. M.; Allende, R.

doi:10.1007/s12289-016-1299-2

Cited by 11 publications

(2 citation statements)

References 7 publications

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“…And on this basis, Su et al (2003) extended the above model to multiaxial TMF life prediction, in which mechanical fatigue damage was calculated using a modified Manson-Coffin equation. Escolan and Bielsa (2017) also presented a cumulative multiaxial thermomechanical fatigue life prediction model which is derived from the general cumulative TMF assumptions proposed by Neu and Sehitoglu. Seifert and von Hartrott (2017) and Hazime and Seifert (2017) have proposed a life prediction method based on crack-tip blunting model for TMF life prediction, and combined with the multiaxial critical plane approach, this model has been used to predict the fatigue life of multiaxial TMF.…”

Section: Introductionmentioning

confidence: 99%

Thermomechanical fatigue life prediction method for nickel-based superalloy in aeroengine turbine discs under multiaxial loading

Shang

Zhang

et al. 2019

International Journal of Damage Mechanics

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The multiaxial thermomechanical fatigue properties for nickel-based superalloy GH4169 in aeroengine turbine discs are investigated in this paper. Four types of axial–torsional thermomechanical fatigue experiments were performed to identify the cyclic deformation behavior and the damage mechanism. The experimental results showed that the creep damage can be generated under thermally in-phase loading while it can be ignored under thermally out-of-phase loading, and the responded stress increasing phenomenon, that is, non-proportional hardening, can be shown under the mechanically out-of-phase strain loading. Based on the analysis of cyclic deformation behavior and damage mechanism, a life prediction method was proposed for multiaxial thermomechanical fatigue, in which the pure fatigue damage, the creep damage, and the interaction between them were simultaneously considered. The pure fatigue damage can be calculated by the isothermal fatigue parameters corresponding to the temperature without creep; the creep damage can be calculated by the principle of subdivision, and the creep–fatigue interaction can be determined by creep damage, fatigue damage, and an interaction coefficient which is used to reflect the creep–fatigue interaction strength. The predicted results showed that the proposed method is reasonable.

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Section: Introductionmentioning

confidence: 99%

Thermomechanical fatigue life prediction method for nickel-based superalloy in aeroengine turbine discs under multiaxial loading

Shang

Zhang

et al. 2019

International Journal of Damage Mechanics

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“…All three damages can operate under in-phase (IP) TMF loading, and the creep damage can be negligible under out-of-phase (OP) TMF loading. The model has been employed for the life prediction of the engineering components under TMF loading (Abu et al, 2014;Escola´n et al, 2017;Kang et al, 2007;Minichmayr et al, 2008). Furthermore, the fracture mechanics parameters, including cyclic stress intensity factor (Kraemer et al, 2017), the cyclic Jintegral (Christ et al, 2003;Esmaeilzadeh et al, 2017), and the cyclic crack-tip opening displacement (Seifert and Riedel, 2010;, were also investigated to estimate the crack growth rate under TMF loading.…”

Section: Introductionmentioning

confidence: 99%

Fatigue–oxidation–creep damage model under axial-torsional thermo-mechanical loading

Shang

Cui

et al. 2019

International Journal of Damage Mechanics

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A fatigue–oxidation–creep damage model that can take into account the effect of multiaxial cyclic feature on the damage mechanism is proposed under axial-torsional thermo-mechanical fatigue loading. In the proposed model, the effects of non-proportional additional hardening on fatigue, oxidation, and creep damages are considered, and the variation of oxidation damage under different high temperature loading conditions is also described. Moreover, the intergranular creep damage needs to be equivalent to the transgranular damage before accumulating with the fatigue and oxidation damages. The fatigue, oxidation, and creep damages can be expressed as the fractions of fatigue life, critical crack length, and creep rupture time, respectively, which allows the linear accumulation of different types of damages on the basis of life fraction rule. In addition, the proposed model is validated by various fatigue experimental results, including uniaxial thermo-mechanical fatigue, axial-torsional thermo-mechanical fatigue, and isothermal axial-torsional fatigue under proportional and non-proportional loadings. The results showed that the errors are within a factor of 2.

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Ermüdungslebensdauerbewertung von Warmumformwerkzeugen – Ein Überblick über den Stand der Forschung und Anwendung

Jilg

Seifert

Bouguecha

2017

Materialwissenschaft Werkst

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Warmumformwerkzeuge unterliegen während des Betriebes komplexen thermischen und mechanischen Beanspruchungen. In kritischen Bereichen können dadurch lokal Spannungen entstehen, die die Fließgrenze überschreiten. Bei der Serienproduktion führt dies zu zyklischen plastischen Verformungen und zur thermomechanischen Ermüdung, welche die Lebensdauer der Warmumformwerkzeuge maßgeblich bestimmen kann. Zur Bewertung der thermomechanischen Ermüdung der Warmumformwerkzeuge gibt es jedoch heute keine etablierten Konzepte, da dieser Aspekt erst durch die Notwendigkeit einer höheren Ressourcen‐ und Energieeffizienz und optimierter Produktionsprozesse (beispielsweise im Rahmen von Industrie 4.0) eine höhere Aufmerksamkeit erreicht. In dieser Arbeit wird zum einen die aktuell industriell angewandte Vorgehensweise zur Auslegung von Warmumformwerkzeugen hinsichtlich der Lebensdauer erläutert. Des Weiteren wird ein Überblick über existierende Plastizitätsmodelle und Lebensdauermodelle gegeben. Dabei wird zwischen rein phänomenologischen und mechanismenbasierten Modellen unterschieden. Aus der betriebenen Recherche wird ersichtlich, dass weiterer Forschungsbedarf auf diesem Gebiet notwendig ist.

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Thermo-mechanical fatigue approach to predict tooling life in high temperature metal forming processes

Cited by 11 publications

References 7 publications

Thermomechanical fatigue life prediction method for nickel-based superalloy in aeroengine turbine discs under multiaxial loading

Thermomechanical fatigue life prediction method for nickel-based superalloy in aeroengine turbine discs under multiaxial loading

Fatigue–oxidation–creep damage model under axial-torsional thermo-mechanical loading

Ermüdungslebensdauerbewertung von Warmumformwerkzeugen – Ein Überblick über den Stand der Forschung und Anwendung

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