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Experimental characterization and numerical assessment of fatigue crack growth under thermo-mechanical conditions

Schlitzer, Teresa ; Bauerbach, Kai ; Beier, Heinz Thomas ; Fischaleck, Manuel ; Langschwager, Kay ; Oechsner, Matthias ; Rudolph, Jürgen ; Scholz, Alfred ; Vormwald, Michael ; Willuweit, Adrian :
Experimental characterization and numerical assessment of fatigue crack growth under thermo-mechanical conditions.
[Online-Edition: http://onlinelibrary.wiley.com/doi/10.1002/mawe.201400372/pd...]
In: Materialwissenschaft und Werkstofftechnik, 46 (2) pp. 165-177. ISSN 0933-5137
[Artikel], (2015)

Offizielle URL: http://onlinelibrary.wiley.com/doi/10.1002/mawe.201400372/pd...

Kurzbeschreibung (Abstract)

The fatigue behavior of the austenitic stainless steel X6CrNiNb18-10 (1.4550, AISI 347) is investigated. Experimental data are generated at room temperature, at elevated temperatures and further under thermo-mechanical conditions. Research is focused on generating data for parameter identification, especially for the improvement of material models. The influence of temperature on the stress-strain behavior and the fatigue life is presented. Finite element simulations are used to describe fatigue crack growth under thermo-cyclic loading conditions. Using the example of a thick-walled tube, the essential parameter for the crack growth rate, the effective cyclic J-integral, is determined for eight temperature transients (defined by fluid temperature, heat transfer coefficient and inner pressure). An approximation of the effective cyclic J-integral allows modeling without consideration of the crack geometry in the model.

Typ des Eintrags: Artikel
Erschienen: 2015
Autor(en): Schlitzer, Teresa ; Bauerbach, Kai ; Beier, Heinz Thomas ; Fischaleck, Manuel ; Langschwager, Kay ; Oechsner, Matthias ; Rudolph, Jürgen ; Scholz, Alfred ; Vormwald, Michael ; Willuweit, Adrian
Titel: Experimental characterization and numerical assessment of fatigue crack growth under thermo-mechanical conditions
Sprache: Englisch
Kurzbeschreibung (Abstract):

The fatigue behavior of the austenitic stainless steel X6CrNiNb18-10 (1.4550, AISI 347) is investigated. Experimental data are generated at room temperature, at elevated temperatures and further under thermo-mechanical conditions. Research is focused on generating data for parameter identification, especially for the improvement of material models. The influence of temperature on the stress-strain behavior and the fatigue life is presented. Finite element simulations are used to describe fatigue crack growth under thermo-cyclic loading conditions. Using the example of a thick-walled tube, the essential parameter for the crack growth rate, the effective cyclic J-integral, is determined for eight temperature transients (defined by fluid temperature, heat transfer coefficient and inner pressure). An approximation of the effective cyclic J-integral allows modeling without consideration of the crack geometry in the model.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Materialwissenschaft und Werkstofftechnik
Band: 46
(Heft-)Nummer: 2
Freie Schlagworte: Thermo-mechanical fatigue, biaxial behavior, effective cyclic J-integral, AISI 347, fatigue crack growth
Fachbereich(e)/-gebiet(e): Fachbereich Bau- und Umweltingenieurwissenschaften, Civil and Environmental Engineering > Institut für Stahlbau und Werkstoffmechanik > Werkstoffmechanik
Fachbereich Bau- und Umweltingenieurwissenschaften, Civil and Environmental Engineering > Institut für Stahlbau und Werkstoffmechanik
Fachbereich Bau- und Umweltingenieurwissenschaften, Civil and Environmental Engineering
Hinterlegungsdatum: 16 Mär 2015 16:29
Offizielle URL: http://onlinelibrary.wiley.com/doi/10.1002/mawe.201400372/pd...
Schlagworte in weiteren Sprachen:
Einzelne SchlagworteSprache
Thermomechanische Ermüdung, biaxiales Verhalten, effektives zyklisches J-Integral, X6CrNiNb18-10, ErmüdungsrisswachstumDeutsch
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