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Numerical simulation and experimental characterisation of fatigue crack growth under thermocyclic loading

Schlitzer, Teresa ; Bauerbach, Kai ; Beier, Heinz Thomas ; Fischaleck, Manuel ; Langschwager, Kay ; Oechsner, Matthias ; Rudolph, Jürgen ; Scholz, Alfred ; Vormwald, Michael ; Willuweit, Adrian (2014):
Numerical simulation and experimental characterisation of fatigue crack growth under thermocyclic loading.
In: Proceedings of the 4th Symposium on Structural Durability in Darmstadt, SoSDiD; May 14th-15th, 2014, Darmstadt, Germany; MARITIM Konferenzhotel. Editors: J. Baumgartner, T. Melz., pp. 147-164, Stuttgart, Fraunhofer Verl., ISBN 978-3-8396-0734-3,
[Book Section]

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.

Item Type: Book Section
Erschienen: 2014
Creators: Schlitzer, Teresa ; Bauerbach, Kai ; Beier, Heinz Thomas ; Fischaleck, Manuel ; Langschwager, Kay ; Oechsner, Matthias ; Rudolph, Jürgen ; Scholz, Alfred ; Vormwald, Michael ; Willuweit, Adrian
Title: Numerical simulation and experimental characterisation of fatigue crack growth under thermocyclic loading
Language: English
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.

Title of Book: Proceedings of the 4th Symposium on Structural Durability in Darmstadt, SoSDiD; May 14th-15th, 2014, Darmstadt, Germany; MARITIM Konferenzhotel. Editors: J. Baumgartner, T. Melz.
Place of Publication: Stuttgart
Publisher: Fraunhofer Verl.
ISBN: 978-3-8396-0734-3
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics
13 Department of Civil and Environmental Engineering Sciences > Institute of Steel Constructions and Material Mechanics > Fachgebiet Werkstoffmechanik
16 Department of Mechanical Engineering > Center for Engineering Materials, State Materials Testing Institute Darmstadt (MPA) Chair and Institute for Materials Technology (IfW)
16 Department of Mechanical Engineering
Event Title: 4th Symposium on Structural Durability in Darmstadt
Date Deposited: 15 Jul 2014 14:10
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