How to exactly divide a face where there is change in curvature?

[sluzzer]

I have an aerofoil blade with single face. I want to divide the face where the curvature changes, for treating the portion separately in CAM software. By doing curvature analysis, I am approximately picking the nearest isoparametric curve to divide the face.
But is there any better way of doing this? Is it possible to do any face analysis and create curve where there is a steep change in curvature?
Here I attached a aerofoil curve analysis picture for reference.
Thank you.

 

[Toost]

The definition of "steep change in curvature" is tricky, because the example you show, the comb of is very smoothly changing the curvature.
If you travel in say 20 mph and softly increase the speed to 40 mph, when does the steep change of acceleration ( not speed) happen ?
If the curve would have been " a poor job" it would have been simple, we would be able to pinpoint that position.
I think you need to pick a "suitable" spot and divide the curve there .

Regards,
Tomas

 

[Toost]

I pushed submit too early. Seems that i cannot add a image when editing a post.

/ Tomas