Method for evaluating service damage of single-crystal high-pressure turbine working blade

The invention belongs to the field of aero-engine design, and relates to a single-crystal high-pressure turbine working blade service damage evaluation method, which comprises the following steps: firstly, determining the stress and temperature range of each working condition of an actual service single-crystal high-pressure turbine working blade; designing and manufacturing a plurality of blade simulators corresponding to the actual service single-crystal high-pressure turbine working blade in stress and temperature ranges under different working conditions, and carrying out a creep interruption test to obtain corresponding relations between different temperatures-stresses and coating and coating-matrix interface structure damage; comparing an interface structure damage atlas with a standard atlas of the main phase content and the blade simulation piece under different temperatures and stress degrees, and selecting the temperature and the stress of the closest blade simulation piece as the temperature and th