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- since 1996 -
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Technical Discussions
Raja
Raja
10:25 Feb-05-2011
Ut Weld in clad material

Please guide me How can we test a weld material with clad.

 
 Reply 
 
anjafo
NDT Inspector
Norway, Joined Aug 2009, 204

anjafo

NDT Inspector
Norway,
Joined Aug 2009
204
10:37 Feb-05-2011
Re: Ut Weld in clad material
In Reply to Raja at 10:25 Feb-05-2011 (Opening).

quick suggestions:

zero probe calibrated off a back wall reflector and possible side drilled holed made from similar size cladded item for bond test.

faster way would be just to do zero probe right through clad to to see if you get any indications of cladding not bonded.

 
 Reply 
 
Jon Wallis
NDT Inspector, -
Netherlands, Joined Feb 2010, 626

Jon Wallis

NDT Inspector, -
Netherlands,
Joined Feb 2010
626
20:31 Feb-05-2011
Re: Ut Weld in clad material
In Reply to anjafo at 10:37 Feb-05-2011 .

Correct me if I'm wrong, but doesn't ASTM have standards that cover just this subject?

 
 Reply 
 
ES
NDT Inspector, NDT Level 3 Client Inspector
AMIQS Automated and Manual Inspection and Quality Services, Poland, Joined Oct 2007, 4

ES

NDT Inspector, NDT Level 3 Client Inspector
AMIQS Automated and Manual Inspection and Quality Services,
Poland,
Joined Oct 2007
4
21:26 Feb-05-2011
Re: Ut Weld in clad material
In Reply to Raja at 10:25 Feb-05-2011 (Opening).

Dear Raja,
You need to use a longitudinal wave angles (TRL) twin cristal probes and special fabricated calibration block. If you dont have it I suggest to use RT and DPI instead UT.
Ciao

 
 Reply 
 
Nigel Armstrong
Engineering, - Specialist services
United Kingdom, Joined Oct 2000, 1096

Nigel Armstrong

Engineering, - Specialist services
United Kingdom,
Joined Oct 2000
1096
05:32 Feb-06-2011
Re: Ut Weld in clad material
In Reply to Raja at 10:25 Feb-05-2011 (Opening).

12 words describe inspection problem? - verbose! "test weld with clad?" - sufficient!

Tell more then answer. (brevity competition!)

 
 Reply 
 
Brenton
Brenton
14:45 Feb-06-2011
Re: Ut Weld in clad material
In Reply to Nigel Armstrong at 05:32 Feb-06-2011 .

Brevity! Clad use 2.5mhz longitudinal waves nuff said :O

 
 Reply 
 
sundar rajan
sundar rajan
21:36 Feb-11-2011
Re: Ut Weld in clad material
In Reply to Brenton at 14:45 Feb-06-2011 .

Prepare a calibration block ( similar thickness with clad) with side drilled holes and scan by angle beam.

 
 Reply 
 
sadek997
NDT Inspector,
AR, Poland, Joined Feb 2011, 12

sadek997

NDT Inspector,
AR,
Poland,
Joined Feb 2011
12
21:48 Feb-14-2011
Re: Ut Weld in clad material
In Reply to Raja at 10:25 Feb-05-2011 (Opening).

If You:
1) are not a 3rd degree Ultrasonicer
2) don't have a special double tranducer angle probes (low frequency)
3) don't have a special clad reference block

Better don't start the examination and do as ES said because You can only get trouble. You have to realize that examination of welds through clad surface implements a necessity of utilization of special examination techniques and the probe beam (acoustic pressure) becomes deformated. Those effects have to be taken into consideration during the survey

Faster and cheaper is to use RT. Less trouble and faster/more reliable results

 
 Reply 
 

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