where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -

NOVO DR
develops and manufactures cutting edge Portable Digital Radiography X-ray Inspection Systems.

425 views
Technical Discussions
Bijay Muduli
Engineering
IOCL, India, Joined Jul 2003, 4

Bijay Muduli

Engineering
IOCL,
India,
Joined Jul 2003
4
08:40 Oct-10-2003
Ultrasonics for Cement Lining

1) Is there any Ultrasonic technique to measure lining/ coating thickness on steel pipes?

2) Can dual probes help in this regard?

Your valuable replies shall be appreciated.

Regards



    
 
 
Todd Allen
Consultant, Ground Penetrating Radar ( GPR )
Radarview Concrete and Underground 3D Imaging, USA, Joined Jan 2003, 7

Todd Allen

Consultant, Ground Penetrating Radar ( GPR )
Radarview Concrete and Underground 3D Imaging,
USA,
Joined Jan 2003
7
01:41 Oct-13-2003
Re: Ultrasonics for Cement Lining
----------- Start Original Message -----------
: 1) Is there any Ultrasonic technique to measure lining/ coating thickness on steel pipes?
: 2) Can dual probes help in this regard?
: Your valuable replies shall be appreciated.
: Regards
------------ End Original Message ------------

Hello,

Yes, there are a few methods that could be used to measure the thickness of concrete / cement linings and or coatings. The 1st is Ground Penetrating Radar which will measure the thickness of the concrete by detecting the strong dielectric change at the concrete-steel interface. This method must be done from the concrete side not the steel side.
The 2nd method is Impact Echo testing which essentially uses very low frequency impacts on the concrete surface. The frequency response from the echo at the interface can be correlated to a thickness.
The 3rd method would be to use Radiography to get a profile image of the pipe. This method may/may not work depending on the size and thickness of the pipe and concrete.

Thanks,
Todd Allen
Radarview Structural and Underground Services
281-705-9476


    
 
 
Bijay Muduli
Engineering
IOCL, India, Joined Jul 2003, 4

Bijay Muduli

Engineering
IOCL,
India,
Joined Jul 2003
4
02:08 Oct-16-2003
Re: Ultrasonics for Cement Lining
----------- Start Original Message -----------
: : 1) Is there any Ultrasonic technique to measure lining/ coating thickness on steel pipes?
: : 2) Can dual probes help in this regard?
: : Your valuable replies shall be appreciated.
: : Regards
: Hello,
: Yes, there are a few methods that could be used to measure the thickness of concrete / cement linings and or coatings. The 1st is Ground Penetrating Radar which will measure the thickness of the concrete by detecting the strong dielectric change at the concrete-steel interface. This method must be done from the concrete side not the steel side.
: The 2nd method is Impact Echo testing which essentially uses very low frequency impacts on the concrete surface. The frequency response from the echo at the interface can be correlated to a thickness.
: The 3rd method would be to use Radiography to get a profile image of the pipe. This method may/may not work depending on the size and thickness of the pipe and concrete.
: Thanks,
: Todd Allen
: Radarview Structural and Underground Services
: 281-705-9476
------------ End Original Message ------------

Thank you verymuch Mr Allen.




    
 
 

Product Spotlight

Swift & Scorpion2 - a state-of-the-art remote-control ultrasonic crawler

The Swift and Scorpion2 dry-coupled, remote-access ultrasonic crawler bring major efficiency and d
...
ata improvements to tank shell inspections and other structures such as vessels and offshore installations.
>

iProbe - USB Phased Array Probe

Turn your PC, Laptop or Tablet into a powerful 32:64 Phased Array system with our USB powered Phas
...
ed Array iProbe and inspection software package. Perform affordable weld inspection and corrosion mapping inspections with this powerful but small system. The probe has a 100V pulser, 8K PRF, dual axis encoder input and achieves outstanding signal quality.
>

Sci Aps Z-Series Portable Handheld Analysers

The world’s only handheld analyzer that measures carbon content in stainless (yes even L-grades),s
...
teels, and cast irons. Also accepted for low Si analysis for sulfidic corrosion analysis, and is widely used in the power industry for Cr analysis, for flow accelerated corrosion applications.
>

IRIS 9000Plus - Introducing the next generation of heat exchanger inspection.

Representing the seventh generation of the IRIS system, the IRIS 9000 Plus has nearly 200 years of c
...
ombined field inspection experience incorporated in its design. This experience combined with a strong commitment to quality and a history of innovation has made Iris Inspection Services® the undisputed leader in IRIS technology.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window