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Pietro Cono
Italy, Joined Aug 2017, 2

Pietro Cono

Italy,
Joined Aug 2017
2
12:06 Aug-28-2017
ASTM E2375 - Notch Size for Angular Beam Reference Reflectors

Good morning everyone

I have a question regarding ASTM E2375, in particular for what is stated in Fig. 4 (Rectangular Notch for Angular Beam Reference Reflectors).

This figure is a table where are indicated the dimensions of the different notches corresponding to the different UT Classes (AAA, AA, A, B and C).

My doubt is about the difference between the depth of Class AA and Class A notches:
Class AA = 0.005 in. [0.13 mm]
Class A = 0.100 in. [2.54 mm]

The difference is too high!
I think that it's a typing error and the correct value for Class A should be 0.010 In. [0.254 mm]. Am I right?

This Standard has been reapproved in 2013 but this issue, that was present from 2008, was not corrected.

Thank you very mutch for any answer.
Pietro

 
 Reply 
 
Diego
Consultant,
Freelance, Spain, Joined May 2013, 188

Diego

Consultant,
Freelance,
Spain,
Joined May 2013
188
21:31 Aug-28-2017
Re: ASTM E2375 - Notch Size for Angular Beam Reference Reflectors
In Reply to Pietro Cono at 12:06 Aug-28-2017 (Opening).

Pietro.
In my opinion, there is no misprint in the Fig. 4. What is indicated in the fig is correct , And this is the same as what was shown in the editions of 2004 and 2008.
Regards.

 
 Reply 
 
Pietro Cono
Italy, Joined Aug 2017, 2

Pietro Cono

Italy,
Joined Aug 2017
2
17:29 Aug-29-2017
Re: ASTM E2375 - Notch Size for Angular Beam Reference Reflectors
In Reply to Diego at 21:31 Aug-28-2017 .

zoom image



The thing that make me doubt regarding the values stated in the standard is that the difference between Class AA and Class A is very high only for the notches for SOLID BARS.

The same step is a lot smaller for what concern Flat Bottom Hole and Notches on Tubes.
For example, if you calculate the ratio between the AREA of the artificial defects you find:

- FBH -----> (A)/(AA) = 2.8
- TUBES --> (A)/(AA) = 4
- BARS----> (A)/(AA) = 40

Why there's so much difference?

Regards
Pietro
 
 Reply 
 

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