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 -

841 views
Technical Discussions
zaki
zaki
01:03 Mar-28-2006
DGS Diagrams

Need information on how to use the DGS digrams, also how to plott a DGS diegram for UT peobes


    
 
 
Gabriel Teodorescu
Gabriel Teodorescu
02:52 Mar-29-2006
Re: DGS Diagrams
----------- Start Original Message -----------
: Need information on how to use the DGS digrams, also how to plott a DGS diegram for UT peobes
------------ End Original Message ------------

To use one DGS diagram is one thing, anf to plot one, is another thing. Generally, persons who can plot diagrams, pretend large sums of money. The best solution is to find an already ploted diagram, which is suited to your transducer. It means the DGS diagrams are plotted taking into account frequency and geometrical dimensions of one particular transducer. There are also general DGS diagrams, which can be used for any transducer.
About the use of DGS diagram, you have to use a book dedicated to this problem.

Teodorescu Gabriel, PH. D.


    
 
 
Ed Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1228

Ed Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1228
02:30 Mar-29-2006
Re: DGS Diagrams
I am not sure if they will help but you might try plotting your parameters using Ermolov's equations.
There is a software tool on NDT.net at http://www.ndt.net/article/v07n01/ginzel/ginzel.htm

----------- Start Original Message -----------
: : Need information on how to use the DGS digrams, also how to plott a DGS diegram for UT peobes
: To use one DGS diagram is one thing, anf to plot one, is another thing. Generally, persons who can plot diagrams, pretend large sums of money. The best solution is to find an already ploted diagram, which is suited to your transducer. It means the DGS diagrams are plotted taking into account frequency and geometrical dimensions of one particular transducer. There are also general DGS diagrams, which can be used for any transducer.
: About the use of DGS diagram, you have to use a book dedicated to this problem.
: Teodorescu Gabriel, PH. D.
------------ End Original Message ------------




    
 
 
Andreas Voge
NDT Inspector, Specially in the oilfield
Tuboscope Vetco(Deutschland)Gmbh, Germany, Joined Oct 1999, 126

Andreas Voge

NDT Inspector, Specially in the oilfield
Tuboscope Vetco(Deutschland)Gmbh,
Germany,
Joined Oct 1999
126
03:22 Mar-29-2006
Re: DGS Diagrams

Normally the manufacturer of the probe will supply you with a dgs-diagram for that probe.Otherwise you need need to have ,sorry I know only the german word for it the "Allgemeine AVG Diagram",this apply only to probes without focus or linses and and impuls picture longer than 3 near field length.
Then you get to formulas to calculate the distance and size of the test flaw.But this you should have learned when you make your level examination.

Regards Andreas


    
 
 

Product Spotlight

FMC/TFM

Next generation for Phased Array UT is here now with FMC/TFM! Have higher resolution imaging, impr
...
oved signal to noise ratio, characterize, size and analyze defects better with access to several wave mode views and save raw FMC data for higher quality analysis.  Some of the benefits are:
  • Beautiful Image! Easier to understand what you're looking at
  • Completely focused in entire image or volume
  • Much easier to define setups before inspection
  • Easier to decipher geometry echoes from real defects
  • Oriented defects (e.g. cracks) are imaged better
  • See image from different wave modes from one FMC inspection
  • FMC data can be reprocessed/analyzed without going back to the field
>

NDT.net launches mobile-friendly design

NDT.net has revamped its website providing a mobile-friendly design.The front page received a comp
...
letely new design and all other sections are now reacting responsively on mobile devices. This has been a major step to make our website more user- friendly.
>

GEKKO - Portable Phased Array Testing with TFM in Real-Time

The portable phased array testing system GEKKO provides 64 parallel test channels. On creating testi
...
ng parameters the operator is assisted by the CIVA software. Due to its modular set-up the GEKKO instrument is suitable for operators of all skill levels.
>

Research and Applications Development For NDT

The Research and Applications Development (RAD) group is a newly formed team within Acuren dedicat
...
ed to tackling challenging inspection problems. Our focus is the development of novel, field deployable, advanced inspection techniques for use in cases where standard NDT methods are ineffective. We don't wait for new innovations, we engineer them. From concept to commissioning.
>

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