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 -
1749 views
Articles & News
Hebri
Teacher, NDT inspection
Aïn Temouchent university, Oran, Algeria, Joined Mar 2013, 4

Hebri

Teacher, NDT inspection
Aïn Temouchent university, Oran,
Algeria,
Joined Mar 2013
4
12:26 Oct-02-2016
Acoustic Emission Source Identification in Pipes Using Finite Element Analysis
Overall

Hello,
I find this work interesting. In this work can we say that we are measuring the lamb wave?

 
 Reply 
 
P V SASTRY
R & D, NDT tecniques metallurgy
TAKEN VRS FROM THE POSITION OF SR. DEPUTY GENERAL MANAGER BHEL CORPORATE R&D, India, Joined Jan 2003, 195

P V SASTRY

R & D, NDT tecniques metallurgy
TAKEN VRS FROM THE POSITION OF SR. DEPUTY GENERAL MANAGER BHEL CORPORATE R&D,
India,
Joined Jan 2003
195
02:27 Oct-03-2016
Re: Acoustic Emission Source Identification in Pipes Using Finite Element Analysis
In Reply to Hebri at 12:26 Oct-02-2016 (Opening).


Dear Sir,

The classic definition of Acoustic Emission (AE) refers to the generation of transient elastic waves in the form of stress waves.

These stress waves can be originated from deep in the components (other than the pipes) having considerable thicknesses and are propagated in all directions. Eventually they reach the surface and can travel several meters and are picked up by the sensors.

When they reach the surface and propagate they can certainly be treated as Lamb waves but not very sure before they reach the surface from several centimeters from inside the component.

Best wishes

P V SASTRY

 
 Reply 
 
Hebri
Teacher, NDT inspection
Aïn Temouchent university, Oran, Algeria, Joined Mar 2013, 4

Hebri

Teacher, NDT inspection
Aïn Temouchent university, Oran,
Algeria,
Joined Mar 2013
4
13:57 Oct-03-2016
Re: Acoustic Emission Source Identification in Pipes Using Finite Element Analysis
In Reply to P V SASTRY at 02:27 Oct-03-2016 .

Dear Sir,
Thank you for your fast response. I have other questions about this article.
- Why the force is spread over a surface area, and in which direction the force is applied?
- can we do that with a concentrated force?
- If we applied the force not perpendicular to the surface, I mean with an angle, I think we will deal with a lamb wave?

thank you again

 
 Reply 
 

Product Spotlight

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.
>

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
>

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.
>

ISONIC 3510

Very Powerful Superior Performance Extremely Portable Smart Phased Array Ultrasonic Flaw Detector an
...
d Recorder with 2 Conventional UT and TOFD Channels uniquely combines PA, single- and multi-channel conventional UT, and TOFD modalities providing 100% raw data recording and imaging. Suitable for all kinds of every-day ultrasonic inspections
>

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