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- since 1996 -

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INSTRUMENTS AND SYSTEMS FOR NON-DESTRUCTIVE TESTING OF MATERIALS.

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Technical Discussions
Mrc
Engineering, UT Level 3
Brazil, Joined Sep 2015, 6

Mrc

Engineering, UT Level 3
Brazil,
Joined Sep 2015
6
22:07 Oct-08-2015
Doubts about dB accuracy form fill in

Please , I am having some hard time to understand how I can get the Total error in the Form M-8 either for the Chart and form M-9.

In the presented exemple on page 345 from AWS D1.1 ed.2010, there is no value for this numbers.

Does Anyone know how to do it?

regards

1    
 
 Reply 
 
Mrc
Engineering, UT Level 3
Brazil, Joined Sep 2015, 6

Mrc

Engineering, UT Level 3
Brazil,
Joined Sep 2015
6
22:16 Oct-20-2015
Re: Doubts about dB accuracy form fill in
In Reply to Mrc at 22:07 Oct-08-2015 (Opening).

Where is the specialists?

    
 
 Reply 
 
Anmol Birring
Consultant,
Birring NDE Center, Inc., USA, Joined Aug 2011, 725

Anmol Birring

Consultant,
Birring NDE Center, Inc.,
USA,
Joined Aug 2011
725
23:57 Oct-20-2015
Re: Doubts about dB accuracy form fill in
In Reply to Mrc at 22:07 Oct-08-2015 (Opening).

Total qualified range 12 dB to 78 dB = 66 dB, Total error = -1.1 to 0.6 dB = 1.7 dB (from the chart)
Total qualified range 10 dB to 80 dB = 70 dB, Total error = -1.2 to 0.8 dB = 2.0 dB (from form M-9)

1    
 
 Reply 
 

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