Model of an engine combustor composite liner.
An engine combustor composite liner is required to operate at elevated temperatures where creep is prevalent. The creep life analysis of a combustor liner is, therefore, of great significance. The variation in material properties, thermal loading, or mechanical loading makes it mandatory to perform a probabilistic creep life analysis of an engine combustor composite liner. This work was directed by the NASA Glenn Research Center to address this important problem.
The MARC program was employed for the nonlinear creep life analysis of the composite combustor liner. The following figure displays the sensitivity factors from the variation of various parameters on the life of the composite combustor liner. Clearly, the reliability of the combustor composite liner is most sensitive to thermal loads.
Results from the reliability analysis.
Last updated: October 11, 2006
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