Discussion in 'GD&T Standards and Practices - ASME & ISO' started by shankar Jadhav, Oct 17, 2015.
Can anybody explain UPR (Undulation per revolution) in roundness and what standard exists for same.
Never heard of it before but was curious...and found this: http://digitalmetrology.com/mean-roundness/
I thought it was pretty informative, though not a "standard". I hope it helps...
Perhaps others specifically in the metrology field might comment..
I found this article as well. It does explain about the UPR ("harmonics") pretty well.
I found this standard using a keyword search ("roundness") on Global IHS and found this: ASME B89.3.1. Not sure if it is completely applicable to your particular need.
Hope this helps!
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