How the measurement is done
Novacam 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 (such as Innovmetric PolyWorks Inspector, 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’s non-contact 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, which measures with a small-diameter rotational probe
- For edges and open surfaces on blades, solutions may involve the EdgeInspect, 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.