Accelerated life consumption due to thermo-acoustic oscillations in gas turbines: XFEM & Crack

A.C. Altunlu, Peter van der Hoogt, Andries de Boer

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Abstract

The combustion instability phenomenon in the gas turbine engines brings out elevated vibrations under high temperature levels. The present work addresses the projection of a life assessment methodology applied in a laboratory-scaled generic combustor onto the typical gas turbine engine combustor section in terms of crack and its evaluation. A temperature-structural analysis based on the combustion experiments was utilized to obtain the crack initiation region. Sequentially coupled extended finite element method (XFEM) based fracture mechanics analysis was performed to characterize the crack-tip near fields in a typical combustor nickel-based superalloy.
Original languageEnglish
Title of host publicationProceedings of the 28th Congress of the International Council of the Aeronautical Sciences (ICAS 2012)
EditorsI Grant
Place of PublicationBrisbane, Australia
PublisherInternational Council of the Aeronautical Sciences (ICAS)
Pages4.2.2-
Number of pages10
ISBN (Print)978-0-9565333-1-9
Publication statusPublished - 23 Sep 2012
Event28th Congress of the International Council of the Aeronautical Sciences, ICAS 2012 - Brisbane, Australia
Duration: 23 Sep 201228 Sep 2012
Conference number: 28

Conference

Conference28th Congress of the International Council of the Aeronautical Sciences, ICAS 2012
Abbreviated titleICAS
CountryAustralia
CityBrisbane
Period23/09/1228/09/12

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Keywords

  • IR-81141
  • METIS-287679

Cite this

Altunlu, A. C., van der Hoogt, P., & de Boer, A. (2012). Accelerated life consumption due to thermo-acoustic oscillations in gas turbines: XFEM & Crack. In I. Grant (Ed.), Proceedings of the 28th Congress of the International Council of the Aeronautical Sciences (ICAS 2012) (pp. 4.2.2-). Brisbane, Australia: International Council of the Aeronautical Sciences (ICAS).