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


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Altunlu, A.C. and Hoogt, P.J.M. van der and Boer, A. de (2012) Accelerated life consumption due to thermo-acoustic oscillations in gas turbines: XFEM & Crack. In: 28th Congress of the International Council of the Aeronautical Sciences (ICAS 2012), 2012-09-23 - 2012-09-28, Brisbane, Australia (pp. 4.2.2 - ).

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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.
Item Type:Conference or Workshop Item
Faculty:
Engineering Technology (CTW)
Link to this item:http://purl.utwente.nl/publications/81141
Conference URL:http://www.icas2012.com/the-congress/
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