PSI - Issue 2_B

C. Kontermann et al. / Procedia Structural Integrity 2 (2016) 3125–3134 C. Kontermann et al. / Structural Integrity Procedia 00 (2016) 000–000

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(4) The kink in the energy di ff erence trends allows a definition of a new crack closure criterion which shows no inherent mesh size dependency and leads to same ∆ J values for the loading and the un-loading hysteresis branch. (5) The introduced fracture mechanics simulation and evaluation procedures are in excellent agreement with the experimental results regarding the ECGM notch support. The significance of considering transient PICC under these conditions has been demonstrated. (6) The proposed method has been validated for the Material X12CrMoWVNbN10-1-1. The introduced general approaches are in principle transferable to other materials as well. The transferability as well as an extension of the approach to consider superimposed early creep crack growth are currently under investigation.

Acknowledgements

The authors would like to thank the ’Forschungsvereinigung der Arbeitsgemeinschaft der Eisen und Metall verar beitenden Industrie e.V.’ (AVIF No. A282) and the ’Forschungskuratorium Maschinenbau e.V.’ (FKM No. 6011331) for their financial support and the working group of the German power plant and gas turbine industry for the very fruit ful discussions. Further thanks are due to the DFG in the framework of the Excellence Initiative, Darmstadt Graduate School of Excellence Energy Science and Engineering (GSC 1070).

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