Losing detail on vane leading and trailing edges after polygonization

[[Mi...]]

We are developing a new scan program for one of our part numbers (which has an older program already developed), and I’ve ran into an issue where our leading and trailing edges are becoming bumpy after the polygonization process. It’s a peculiar issue because with this new program I’m better able to pick up smaller, more fine, details on other areas of the part. It’s just the trailing and leading edges that are giving me grief.

Can someone help explain what is going on here and what I can do to better pick up the leading and trailing edges? As far as I can tell, the exposure settings and scan quality settings between the two programs are nearly identical. The major difference between the two programs is that my new program has few shots and a quicker run time. Do I maybe need more shots around the leading and trailing edges?

[[Ch...]]

Hi Mike,

I think I can help you with this but will need a bit more information first.

• Is this a single airfoil component or a multi-airfoil component such as a stator assembly/ring?
• Are you teaching the sensor positions manually or are you using Smart Teach?
• Did the part have the same surface condition for the 'new program' result and the 'current program' result?
• Do the two images above show the measurement of the same part and airfoil with two different programs?  Or is it possible that the airfoil edge (LE/TE) measured in the 'new program' is significantly smaller in diameter?

Cheers for now,

Chris