Abstract. Diagnostics of the real state and residual life of structural elements of an aircraft gas turbine engine is the main task in solving the problem of ensuring safety in the operation of aircraft.
The most important link in the assessment of the resource and strength is the GTE turbine – the determination of the stress-strain state (SSS) of structural elements that are distinguished by the complexity of the shape and a large number of stress concentration zones. At the same time, the determination of the actual values of strains and stresses and their changes over time during operation is required both for assessing strength and service life, and for developing recommendations for optimizing operating modes and improving structures.

Key words: stress-strain state, diagnostics, heat-resistant coatings, GTE turbine blades, modeling.