ICAMS / Interdisciplinary Centre for Advanced Materials Simulation


ICAMS Special Seminar by C. Schweizer


Christoph Schweizer
Fraunhofer-Institut für Werkstoffmechanik

Mechanisms and modelling of fatigue crack growth under combined low and high cycle fatigue loading

Abstract:The evolution of microcracks in a 10%-chromium steel is followed with the replica technique for pure low cycle fatigue (LCF) and combined LCF and high cycle fatigue (HCF) loading conditions. The superimposed HCF-cycles lead to accelerated fatigue crack growth rates, as soon as a certain crack length is reached. A mechanism based model is presented, which accounts for this e ect and only needs one single tting parameter. The model is used to predict fatigue lives at high temperatures and under thermomechanical fatigue loading conditions.

date: 15.12.2009
place: UHW 11/1102
time: 11 am

For more information contact: Rebecca.Janisch@rub.de

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