Surface analysis and device for detecting closed holes

摘要

The method involves measuring a rotor blade (120) and a stator blade (130) of a gas turbine with unclosed holes in an uncoated condition. A mask model (19) is generated by laser triangulation, where the mask model contains position of the holes and orientation of longitudinal axes. Datarecord of a coating model (4) is represented. The mask model is compared with the coating model to detect closed holes of the blades. A best match of the mask model and the coating model is determined by iteration. An independent claim is also included for a device for executing a method for surface analysis of opened, partially closed holes of blades after coating.