Risk estimation for LCF crack initiation

Sebastian Schmitz*, Hanno Gottschalk, Georg Rollmann, Rolf Krause

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

An accurate risk assessment for fatigue damage is of vital importance for the design and service of today's turbomachinery components. We present an approach for quantifying the proba- bility of crack initiation due to surface driven low-cycle fatigue (LCF). This approach is based on the theory of failure-time pro- cesses and takes inhomogeneous stress fields and size effects into account. The method has been implemented as a finite-element postprocessor which uses quadrature formulae of higher order. Results of applying this new approach to an example case of a gas-turbine compressor disk are discussed.

Original languageEnglish (US)
Title of host publicationStructures and Dynamics
PublisherThe American Society of Mechanical Engineers(ASME)
ISBN (Print)9780791855263
DOIs
StatePublished - 2013
EventASME Turbo Expo 2013: Turbine Technical Conference and Exposition, GT 2013 - San Antonio, Tx, United States
Duration: Jun 3 2013Jun 7 2013

Publication series

NameProceedings of the ASME Turbo Expo
Volume7 A

Conference

ConferenceASME Turbo Expo 2013: Turbine Technical Conference and Exposition, GT 2013
Country/TerritoryUnited States
CitySan Antonio, Tx
Period06/3/1306/7/13

ASJC Scopus subject areas

  • General Engineering

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