How the measurement is done
NOVACAMTM 3D metrology systems are based on low-coherence interferometry (LCI)
- NOVACAM optical probes scan surfaces in a collinear fashion – the light beam is emitted and received along an identical axis – and therefore sharp edges of cooling holes or other high-aspect ratio features do not present a problem. The size and incident angle of the minuscule cooling holes can be determined.
- The probes acquire surfaces at up to 100,000 3D point measurements per second, providing a dense point cloud of micron-precision 3D measurements for analysis.
- Using GD&T software (InnovMetric PolyWorks InspectorTM, which comes as an option with NOVACAM systems), the acquired blade surface data may be compared to CAD drawings for defect detection.
- Exported results may also be integrated with data loggers and SPC software.
Versatile blade and blisk inspection solutions
NOVACAM 3D metrology systems can be adapted to all blade inspection needs, and provide capabilities from simple GD&T verification to defect detection and measurement.
- To measure the hard-to-reach blade or blisk surfaces, solutions will typically involve the BOREINSPECT system, which measures with a small-diameter rotational probe
- For edges and open surfaces on blades, solutions may involve the EDGEINSPECT system, which measures with a galvo (raster) scanner
- To combine several types of measurement in one system, a custom system is configured with 2 or more probes (e.g. galvo scanner and a rotational probe) all connected to one interferometer, bringing additional return on investment (ROI) to Novacam’s aviation and energy sector clients.
Advantage of scanning with fiber-based probes
NOVACAM systems are based on low-coherence interferometry (LCI) and are highly suitable for automated inspection applications. Our probes and scanners come in a range of sizes and designs to suit each particular application.
The probes and scanners are fiber-based and therefore they:
- Deploy at a distance from the detector, without signal degradation
- Are easily deployed either as robot end-effectors or as components in lab inspection stations with multi-axis displacement
- Can be made rugged to operate even in hostile environments (radioactive, very hot, or cryogenic)
- Allow for flexible in-process set-up. See more advantages of our fiber-based LCI systems.