Technique of design definition of strength of cooled blades
Questions of safety factors definition for cooled turbine blades from low plastic and plastic polycrystalline super alloys at static and thermal cyclic loading are observed. It is established, that depending on loading paths of various elements of blades and on limit deformation of a material it is expedient to use various approaches to their estimation thermal cyclic strengths. Procedure of definition of deformation range for a cycle is offered at a proportional and nonproportional loading. Verification of the developed technique on blades power GTE is carried out.