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Technical Discussions
suresh
suresh
08:28 Jan-29-2008
IRIS


How effective is IRIS for embedded finned tube ?




    
 
 
Leon Vermeulen
Leon Vermeulen
05:22 Jan-31-2008
Re: IRIS
It really depends on which kind of defects you want to detect. For internal defects it has no influence. External defects are uncommon in finned tubes

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: How effective is IRIS for embedded finned tube ?
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burhanudin sudharmin
Engineering, Reliability and Integrity Eng
Shell Malaysia Trading, Malaysia, Joined Jan 2008, 54

burhanudin sudharmin

Engineering, Reliability and Integrity Eng
Shell Malaysia Trading,
Malaysia,
Joined Jan 2008
54
03:15 Feb-01-2008
Re: IRIS
Though external defects are uncommon in finned tubes, it should be noted that externals are easily visually inspected.
IRIS application are more generally used to determine remaining thickness of a tube.



    
 
 
tiago machado
tiago machado
06:09 Feb-01-2008
Re: IRIS
IRIS inspection tube data!


    
 
 
kyung tae kim
kyung tae kim
04:40 Mar-08-2008
Re: IRIS
2 different tubes like A and B
"A" tube is in "B" tube.
In between A and B there is thin metal film all around of tube.

Can you measure this film thickness uniformly with Ultrasonic?


    
 
 
Tony McMurtry
Tony McMurtry
20:26 Mar-01-2009
Re: IRIS
In Reply to kyung tae kim at 04:40 Mar-08-2008 .

Can the film be measured? Not likely using IRIS. The interface betwen the outside
wall of the inner tube and the film represents a significant density change. It is the
change in densities that trigger the return pulse that ends a measurement. No matter how
tightly the bond, even the most minor changes trigger a return pulse. It is this reason that even bonded bi-metallic tubes cannot be fully inspected using the IRIS unit.

    
 
 

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