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Technical Discussions
ICTMan
Student
USA, Joined May 2009, 4

ICTMan

Student
USA,
Joined May 2009
4
04:06 Jun-02-2009
is it possible to use NDT UT to test under sea fiber

hi
is it possible to use NDT UT to test under sea fiber(the shield only)?

    
 
 
S.V.Swamy
Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex , India, Joined Feb 2001, 785

S.V.Swamy

Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex ,
India,
Joined Feb 2001
785
09:34 Jun-02-2009
Re: is it possible to use NDT UT to test under sea fiber
In Reply to ICTMan at 04:06 Jun-02-2009 (Opening).

If you can first set up an immersion tank and put a small length of the cable in it and validate the UT immersion set up successfully, translating it for undersea cable testing may not be too much of a problem. So, I would suggest that you first complete the lab part of the set up.

Swamy

    
 
 
ICTMan
Student
USA, Joined May 2009, 4

ICTMan

Student
USA,
Joined May 2009
4
06:12 Jun-04-2009
Re: is it possible to use NDT UT to test under sea fiber
In Reply to S.V.Swamy at 09:34 Jun-02-2009 .

thank you. I'm working on my university thesis. and before doing any thing I want to know if it is possible and my effort is not impracticable. I only want to design and test it in lab range.
does the NDT UT work on suffaces like under sea fiber optic cables cover. it slim (~2 mm) and other layers are under it. and some of them are not glossy. and other problem is the layers that are made under sea like sediment that is not possible to clean all the length of the cable to test. is it a method to test it under this situations.

    
 
 
S.V.Swamy
Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex , India, Joined Feb 2001, 785

S.V.Swamy

Engineering, - Material Testing Inspection & Quality Control
Retired from Nuclear Fuel Complex ,
India,
Joined Feb 2001
785
18:48 Jun-04-2009
Re: is it possible to use NDT UT to test under sea fiber
In Reply to ICTMan at 06:12 Jun-04-2009 .

In that case, a thorough search should bring up the feasibility studies if any already conducted. You should in any case, do an experimental set up to validate the theory. In theory it is possible to transmit sound through several layers of different materials and detect imperfections in each of them. Practice is quite different from theory however and the testability depends on many factors. I am writing out of my general knowledge and confess that I have not done any studies myself.

Best wishes.

Swamy

    
 
 
Joe Buckley
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 517

Joe Buckley

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
517
22:01 Jun-04-2009
Re: is it possible to use NDT UT to test under sea fiber
In Reply to ICTMan at 06:12 Jun-04-2009 .

Undersea cables are designed for a wide range of applications. (Pressure, flexibility, abrasion resistance etc) Usually the different layers perform different functions and are made of quite different materials. Its fairly unlikely that you will get much sound past the first layer. But each case is different. Its worth a try.

Joe

    
 
 
ICTMan
Student
USA, Joined May 2009, 4

ICTMan

Student
USA,
Joined May 2009
4
14:04 Jun-05-2009
Re: is it possible to use NDT UT to test under sea fiber
In Reply to Joe Buckley at 22:01 Jun-04-2009 .

is there any effort doing this. I need it to use the results of experiences. I could not find any.
thank you Sirs.

    
 
 

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