Radius gauge measurement on the Mentor Visual iQ+ VideoProbe 

In this article:

• Explains how radius gauge measurement on the Mentor Visual iQ VideoProbe creates a user-defined 3D circle to visually compare surface radii or diameters with known values.
• Highlights typical applications, such as gas turbine boroblend inspections, scallop checks, and tip blend evaluations using 3D surface data.
• Shares best practices for accurate results, including optimal 3D Phase tips, use of a measurement plane on curved or edged surfaces, and visibility considerations.

What is the radius gauge measurement available on the Mentor Visual iQ+ VideoProbe?

Creates a 3D circle of a user-designated size to enable a visual comparison against the shape of a surface to be evaluated in accordance with a known radii (or diameter).

Example Applications:

• Gas Turbine boroblend: scallop or tip blend.

3D Surface Mask:

When used without a Measurement Plane, a best-fit plane is determined using points inside the circle on the same surface as the center cursor. When enabled in Settings, points near the best-fit plane are shown in green with the exception of points in the vicinity of the circle, which are not masked in order to increase the visibility and position of the circle.

Best Practices to Improve Measurement Accuracy:

• Best suited in conjunction with long range Yellow (forward facing) or Green (side facing) 3D Phase Measurement tips.
• Can be used with Measurement Plane in order to enable radii check on edges of components such compressor blade aerofoils or indeed when the surface is curved and a ‘best fit’ plane is considered appropriate.
• Note that the circle line visibility in the point cloud view varies as it crosses between the near and far sides of the surface.