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- since 1996 -
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Technical Discussions
Rich
Rich
00:04 Feb-01-2020
UT Curvature Correction

I’ve got a question for you if you don’t mind. I’m taking a test and need to report the flaw location with curvature correction. The Outside Diameter of the plate is 205.22 inches with a thickness of 11.44 inches. When I record a flaw from the Outside Diameter with a given angle say 46 degrees. The particular software I’m using doesn’t correct for Curvature. So if I record a flaw at a certain depth from the Outside Diameter I then have to give the position inside the metal. So is there a formula that I can use to perform this calculation? I hope this makes sense. If you need more information you can email me.

Anmol Birring
Consultant,
Birring NDE Center, Inc., USA, Joined Aug 2011, 805

Anmol Birring

Consultant,
Birring NDE Center, Inc.,
USA,
Joined Aug 2011
805
14:44 Feb-02-2020
Re: UT Curvature Correction
In Reply to Rich at 00:04 Feb-01-2020 (Opening).

Just make a drawing to scale and figure out.
The other option to use trignometry

Paul Holloway
Consultant,
Holloway NDT & Engineering Inc , Canada, Joined Apr 2010, 242

Paul Holloway

Consultant,
Holloway NDT & Engineering Inc ,
Joined Apr 2010
242
12:02 Feb-04-2020
Re: UT Curvature Correction
In Reply to Rich at 00:04 Feb-01-2020 (Opening).

Hi Rich,

I answered this for you on my website in the comments section:

http://www.hollowayndt.com/news/2019/2/20/ultrasonic-inspection-angles-on-curved-surfaces

Paul

Richard Riddles
Richard Riddles
00:20 Feb-05-2020
Re: UT Curvature Correction
In Reply to Rich at 00:04 Feb-01-2020 (Opening).

Paul,

Thanks for taking the time to create this formula! We we say “sound path”, I’m calibrated in depth not metal path. Will the formula still work entering the depth in the material instead of metal path?

Thanks again,
Richard

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