Influence of geometric factors on cyclic durability of rotor main parts of the hot section of aircraft engines. Validation using lumen control results

A study was conducted of the influence of some geometric factors on such parameters as the position of dangerous points determining the cyclic durability of a part, and the values of cyclic durability at these points. Based on the results of the validation carried out using the results of non-destructive testing and fractographic studies of opened cracks in the main part with operational defects, the adequacy - the degree of compliance with the research results - of the calculation models used to determine the cyclic durability was established. The work was carried out as part of the task of determining the resource indicators of the main part, taking into account the presence of an initial defect.