Abstract
Thermal and stress-strain states of the wedge-shaped specimen, which simulate GTE blade edge material state, have been analyzed under thermal cyclic loading in a gas flow. A significant influence of the mechanisms and kinetics of degradation in the surface layer material properties on the stress state of various zones of the wedge-shaped specimens and the character of thermal fatigue crack initiation and growth depending on the damage level is shown. The results of investigation of the influence of dimensions, localization and kinetics of thermal fatigue cracks on the change of the structure (specimen) stress-strain state as a whole are presented.
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