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 -

317 views
Technical Discussions
Sunny
Sunny
07:20 Feb-09-2007
UT testing round bars

In round bars as I understand, the defects occur in axial direction. What are the chances of defects in circumferential direction espically near the surface. And for finding such defects, isnt shear wave is the best to be used. I am talking of automated units; no inspection from sides.


    
 
 
Terry
Terry
03:15 Mar-14-2007
Re: UT testing round bars
----------- Start Original Message -----------
: In round bars as I understand, the defects occur in axial direction. What are the chances of defects in circumferential direction espically near the surface. And for finding such defects, isnt shear wave is the best to be used. I am talking of automated units; no inspection from sides.
------------ End Original Message ------------

It depends to some degree on how the bars have been processed and the material being inspected. In our rolled bars we perform normal longitudinal wave inspection for internal defects and typically, circumfrential shear wave inspection for the detection of surface related defects, i.e. seams in an axial direction. However, we sometimes also perform an additional axial shear wave inspection to detect roll tears which most likely will occur in the circumfrential direction. For internal discontinuities, the longitudinal wave mode is probably the best inspection method as discontinuities should occur in the direction of grain flow.



    
 
 

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
>

NEW! The PragmaPro Instrument Platform

The PragmaPro is based on a modular cartridge technology and supports various NDT instrument modal
...
ities such as UT, PAUT, ECT and many more. This new platform is based on a machined, powder-coated aluminum frame for shock-proofness, best sealing qualities and maximum heat dissipation. This is practical to extend the outdoor temperature range and/or to extend the power injected in the transducers. The PragmaPro is aiming at a very wide range of applications, such as weld scanning, corrosion mapping and composite testing.
>

CIVA 2017 UT Module

CIVA NDE Simulation Software is the world leader of NDT Simulation. The UT simulation Module incl
...
udes: - "Beam computation": Beam propagation simulation - "Inspection Simulation": Beam interaction with flaws or specimens The user can simulate a whole inspection process (pulse echo, tandem or TOFD) with a wide range of probes (conventional, Phased- arrays or EMAT), components, and flaws.
>

NozzleScan: Radial nozzle scanner with probe skew

NozzleScan is a versatile manual scanning solution developed for the inspection of nozzle welds in
...
both set-through and set-on configurations. Available in both two-axis and three-axis instrument configurations and adaptable to cover a wide range of 90-degree nozzle sizes, from 3" upwards, on ferritic and austenitic materials.The transducer skew axis can also be adjusted, encoded and locked.
>

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
s