28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-4.2.2
ACCELERATED LIFE CONSUMPTION DUE TO THERMO-ACOUSTIC OSCILLATIONS IN GAS TURBINES: XFEM & CRACK
A. C. Altunlu, P. van der Hoogt, A. de Boer
Univ. of Twente, Netherlands
Keywords: gas turbine, combustion dynamics, life, crack, xfem
The study deals with crack initiation and propagation prediction in test specimens. The investigated specimens includes a cooling hole, which scales up stress concentration location due to limitcycle oscillations in gas turbine combustion liners. Extended finite element method (XFEM) based LEFM approach has been used in fracture mechanics analysis.
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