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Technical Discussions
Arivazhagan
NDT Inspector,
HAL, India, Joined Oct 2014, 5

Arivazhagan

NDT Inspector,
HAL,
India,
Joined Oct 2014
5
10:25 Oct-30-2014
Shear wave reference block for Rings

Need to fabricate a reference standard (Acceptance critereia is 2mm ) for inspecting alumiium ring of size 1200mm OD, 1100mm ID and 90 mm thick , pl suggest.

 
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Dent
Consultant, NDE Manager NDELevel III/3
NDT Consultant, Canada, Joined Nov 1998, 252

Dent

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
252
12:02 Oct-30-2014
Re: Shear wave reference block for Rings
In Reply to Arivazhagan at 10:25 Oct-30-2014 (Opening).

It is normal to put notches ID & OD on the actual part for this type of inspection rather than make a special cal. block.

Your specification/procedure should be consulted.

 
 Reply 
 
Jawed Akhter
Jawed Akhter
16:23 Oct-30-2014
Re: Shear wave reference block for Rings
In Reply to Arivazhagan at 10:25 Oct-30-2014 (Opening).

Your stansard call for 2mm flat bottom hole of side drill hole ? in eithe case you need
reference block to set up sensitivity.

 
 Reply 
 
Dent
Consultant, NDE Manager NDELevel III/3
NDT Consultant, Canada, Joined Nov 1998, 252

Dent

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
252
21:24 Oct-30-2014
Re: Shear wave reference block for Rings
In Reply to Jawed Akhter at 16:23 Oct-30-2014 .

Subject line of posting is Shear Wave. FBH's are almost always for straight beam. SDH's are normally used for weld inspections.
Notches are used for angle beam examinations of various product forms including large forged rings like you describe. Unless you have additional material to make a cal block from it is common to put the notches in the actual product and if necessary machine them off after testing.

1
 
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Simon Amallraja
Consultant, Advanced NDT Methods
Anu Consultants, India, Joined Aug 2013, 42

Simon Amallraja

Consultant, Advanced NDT Methods
Anu Consultants,
India,
Joined Aug 2013
42
10:00 Nov-03-2014
Re: Shear wave reference block for Rings
In Reply to Arivazhagan at 10:25 Oct-30-2014 (Opening).

You have couple of Ref Standard manufuacturers with NIST trecebaility.

Check with www.phtools.com. They will be able to support you immediately.

Good Luck

 
 Reply 
 

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