On-line assessment and numerical modeling of thermal fatigue and oxidation damages in turbine airfoils under simulated service conditions

Abstract

Literature review of metallurgy, thermal fatigue and oxidation damages modelling for bare and coated superalloys -- Chemical and physical metallurgy of Ni-base superalloys and aluminide coatings -- Thermal fatigue damage modelling -- Oxidation damage modelling -- Experimental program -- Thermal fatigue testing in the burner rig -- Specimen temperature measurement techniques -- Damage assessment techniques -- Damage assessment from metallographic analysis -- On-line crack growth assessment -- Thermo-mechanical analysis and damage modeling -- Thermal analysis -- Mechanical analysis -- Thermal fatigue damage modelling -- Oxidation damage modelling.