Area Depth Profile; Measurement Plane - GE Mentor Visual iQ Manual Del Usuario

Area Depth Profile

Area Depth Profile
Sweeps a series of depth profile slices over an area defined by three cursors and identifies the profile slice having the highest or
Sweeps a series of depth profile slices over an area defined by three cursors and identifies the profile slice having the highest or
lowest point.
lowest point.
Example Applications:
Example Applications:
Corrosion, erosion and pitting
• • Corrosion, erosion and pitting
FOD impact damage
•
• FOD impact damage
Maximum weld height including orbital welds
• • Maximum weld height including orbital welds
• Maximum wear groove depth Maximum wear groove depth
•
Best Practices to Improve Measurement Accuracy:
Best Practices to Improve Measurement Accuracy:
Position the measurement tip as close as possible to the
• Position the measurement tip as close as possible to the •
indication.
indication.
Use with reference surfaces that are flat or have curvature
• Use with reference surfaces that are flat or have curvature •
in only one direction, such as a straight section of a pipe. Do
in only one direction, such as a straight section of a pipe. Do
not use on surfaces with complex curvatures such as a pipe
not use on surfaces with complex curvatures such as a pipe
elbow or turbine blade root at the leading or trailing edge.
elbow or turbine blade root at the leading or trailing edge.
When measuring on a curved surface, position the cursors
• When measuring on a curved surface, position the cursors •
such that the reference profile lines are curved. If unsure
such that the reference profile lines are curved. If unsure
of proper orientation, practice on a test piece of the same
of proper orientation, practice on a test piece of the same
shape. When cursors are properly placed, you should get a
shape. When cursors are properly placed, you should get a
result close to zero, and most of the area should be shown
result close to zero, and most of the area should be shown
in green. See images below. in green. See images below.
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• The green Surface Mask visible when moving the cursors The green Surface Mask visible when moving the cursors
•
indicates points very close to the reference planes of the indicates points very close to the reference planes of the
depth profile slices. If you only have a small line of green
depth profile slices. If you only have a small line of green
near the two reference profile lines, you are likely positioning near the two reference profile lines, you are likely positioning
the lines incorrectly on a curved surface. See images below. the lines incorrectly on a curved surface. See images below.
• The reference profile lines follow the surface curvature and The reference profile lines follow the surface curvature and
•
are used to determine the reference planes for the profile are used to determine the reference planes for the profile
slices. Position the cursors such that the reference profile slices. Position the cursors such that the reference profile
lines are fully on the reference surface. lines are fully on the reference surface.
• Use the 3D point cloud to verify that the reference plane
Use the 3D point cloud to verify that the reference plane
•
for the result slice, indicated by a blue square, is accurately for the result slice, indicated by a blue square, is accurately
aligned with the reference surface at the location of the aligned with the reference surface at the location of the
result slice.
result slice.
• The first two cursors define the first reference profile line. The first two cursors define the first reference profile line.
•
The third cursor sets the distance between the second The third cursor sets the distance between the second
reference profile line and the first. The system determines reference profile line and the first . The system determines
the endpoints of the second reference profile line to match the endpoints of the second reference profile line to match
the curvature of the surface along the first. If you have
the curvature of the surface along the first . If you have
difficulty getting the second reference profile line where
difficulty getting the second reference profile line where
you want it, you are likely not setting up the measurement you want it , you are likely not setting up the measurement
correctly with respect to surface curvature.
correctly with respect to surface curvature.


Measurement Plane

Measurement Plane
Measurement aid used in conjunction with other measurement types to allow the placement of cursors in red areas where no
Measurement aid used in conjunction with other measurement types to allow the placement of cursors in red areas where no
3D data is present or where noise in the 3D data may be reducing measurement accuracy.
3D data is present or where noise in the 3D data may be reducing measurement accuracy.
Example Applications: Example Applications:
With Area to measure missing corners
•
• With Area to measure missing corners
With Point to Line for blade edge damage
• • With Point to Line for blade edge damage
With Depth for blade tip to shroud gaps
• • With Depth for blade tip to shroud gaps
• With Length or Point to Line for small features when unable With Length or Point to Line for small features when unable
•
to get closer
to get closer
• With Area Depth Profile when measuring a field of pits on a With Area Depth Profile when measuring a field of pits on a
•
flat surface flat surface
• With Depth Profile when you cannot fit the cursors fully on a
With Depth Profile when you cannot fit the cursors fully on
•
a flat reference surface flat reference surface
Effect of a Measurement Plane on other measurement
Effect of a Measurement Plane on other measurement
types: types:
• Length, Point to Line, Multi-Segment, and Area: All cursors Length, Point to Line, Multi-Segment , and Area: All cursors
•
are projected onto the Measurement Plane, and the result is are projected onto the Measurement Plane, and the result is
computed using the projected positions on the plane. computed using the projected positions on the plane.
A
• Depth: The first three cursors select individual surface Depth: The first three cursors select individual surface
•
points as with a normal Depth measurement. Only the points as with a normal Depth measurement . Only the
fourth is projected onto the Measurement Plane. fourth is projected onto the Measurement Plane.
• Depth Profile: The Measurement Plane is used as the Depth Profile: The Measurement Plane is used as the
•
reference plane, so the Depth Profile cursors may overlap
reference plane, so the Depth Profile cursors may overlap
edges or be in red areas. The result is the height or depth edges or be in red areas. The result is the height or depth
from the Measurement Plane. Use only with flat reference from the Measurement Plane. Use only with flat reference
surfaces.
surfaces.
• Area Depth Profile: Both reference lines are positioned on Area Depth Profile: Both reference lines are positioned on
•
the Measurement Plane allowing them to pass through red the Measurement Plane allowing them to pass through red
areas or surface pits without affecting the profiles taken areas or surface pits without affecting the profiles taken
between the reference lines. The result is the height or depth
between the reference lines. The result is the height or depth
from the Measurement Plane. Use only with flat reference
from the Measurement Plane. Use only with flat reference
surfaces.
surfaces.
• Only one Measurement Plane can be used on an image. Only one Measurement Plane can be used on an image.
•
If a Measurement Plane is present , all other measurements
• If a Measurement Plane is present, all other measurements •
use it regardless of the order in which they were placed.
use it regardless of the order in which they were placed.
VideoProbe 3D Measurement Handbook
VideoProbe 3D Measurement Handbook | 13
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