3D Metrology Services – Aerospace – Turbine Blade Inspection

Demand for increasingly complex turbine blades, including airfoil, root geometries, and shaped cooling holes with tighter tolerances and accuracies, has risen due to improved engine performance levels and efficiencies required in the new generation of aero-engines and land-based gas turbine engines. Our 3D Metrology services use advanced 3D scanning and measurement technologies to inspect both straight and shaped cooling holes, leading edge surface roughness, blade root geometry, airfoil characteristics and for detection of surface defects to improve blade performance.

Cooling Hole Inspection

Non-destructive, 3D scanning and inspection is used to verify hole presence, inspect hole location, shape, surface roughness, breakthrough and to identify back wall penetration (back-strike) in straight and shaped cooling holes found on turbine blades. Inspection data for each separate hole can be automatically stored as statistical datasets or full 3D point cloud models and used for full traceability and verification.

Leading Edge Surface Roughness Inspection

Surface roughness of the leading edge on turbine blades has a substantial effect on overall turbine blade performance. Using high resolution 3D scans of the leading edge, the surface roughness is characterized and inspected for profile (Ra) or surface (Sa) roughness values.

Blade Root Geometry Inspection

An accurate fit between the turbine blade root geometry and mating components is critical to the performance and safe operation of turbine engines. After capturing 3D scans of the entire turbine blade root, inspection of the complex geometry is quick and easily repeated using 3D profile form inspection and/or difference modeling.

Blade Airfoil Characteristic Inspection

The geometry of the turbine blade airfoil is easily characterized using 3D scanning technology to create an accurate 3D point cloud of turbine blade airfoil surfaces. Using 3D profile form inspection and/or difference modeling allows for quick and easily repeated inspection of the airfoil geometry.

Detection of Blade Surface Defects

Inspection of all surfaces on the turbine blade for detection of defects like voids, scratches, nicks, FOD, etc… are easily completed utilizing 3D scanning technologies. This defect detection is easily automated utilizing 3D difference modeling for quick pass/fail inspection.