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where expertise comes together
- since 1996 -
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Technical Discussions
Bruce Edwards
Bruce Edwards
05:04 Jan-30-2001
Train Wheel inspection at high speeds
Although this system is for train wheel inspection at high speeds I thought you might be interested. Go to
http://www.jodon.com/wheel.html it may be of interest to you


 
 Reply 
 
Ron Mahler
Ron Mahler
07:18 Jan-30-2001
Re: rails/railway track inspection
: gentlemen,
: we are a NDT Firm based in Mumbai, India. I am interested in an
: NDT Tecniq for finding out surface defects of rails/railway tracks
: I am aware that Ultrasonic Testing is performed by custom built
: systems but would like to know of a NDT Method which is fast and
: accurate and can be used effectively for large scale for finding out surface and
: subsurface defects. Incase if MPI or LPT or Eddy Current can be
: used, is there any particular method or apart from these any
: other method is available. Has anybody ever tried the above methods
: on large scale inspection. If anybody can help me out, I will be
: obliged
: regards
: ram
: sharpndt@vsnl.com




 
 Reply 
 
Ron Mahler
Ron Mahler
07:24 Jan-30-2001
Re: rails/railway track inspection
Scanmaster Systems (irt) Ltd. installed successfuly a high speed rail inspection system at inspection speed of upto 100 Km/Hr - The SFB-100. For more information visit our web site at www.scanmaster-irt.com.
Regards,
Ron Mahler



 
 Reply 
 
Godfrey Hands
Consultant,
PRI Nadcap, United Kingdom, Joined Nov 1998, 304

Godfrey Hands

Consultant,
PRI Nadcap,
United Kingdom,
Joined Nov 1998
304
08:30 Jan-30-2001
Re: rails/railway track inspection
: gentlemen,
: we are a NDT Firm based in Mumbai, India. I am interested in an
: NDT Tecniq for finding out surface defects of rails/railway tracks
: I am aware that Ultrasonic Testing is performed by custom built
: systems but would like to know of a NDT Method which is fast and
: accurate and can be used effectively for large scale for finding out surface and
: subsurface defects. Incase if MPI or LPT or Eddy Current can be
: used, is there any particular method or apart from these any
: other method is available. Has anybody ever tried the above methods
: on large scale inspection. If anybody can help me out, I will be
: obliged
: regards
: ram
: sharpndt@vsnl.com

Dear Ram,
To detect sub-surface defects, you need a technique that can test for internal defects.
With railroad track and wheels, your critical area will be in the Hertzian zone, which is several millimeters beneath the surface.
Whilst Magnetic Particle Inspection can detect "Just Subsurface" defects, we are talking here about TENTHS of a millimetre depth, not several millimetres.
In the same way, Eddy Current will also not penetrate to the required depth.
I am afraid that Ultrasonics appears to be the only feasible technique to detect defects that extend to the Hertzian zone of these items.




 
 Reply 
 
ram iyengar
Director
India, Joined Feb 2000, 13

ram iyengar

Director
India,
Joined Feb 2000
13
02:50 Jan-11-2001
rails/railway track inspection

gentlemen,
we are a NDT Firm based in Mumbai, India. I am interested in an
NDT Tecniq for finding out surface defects of rails/railway tracks
I am aware that Ultrasonic Testing is performed by custom built
systems but would like to know of a NDT Method which is fast and
accurate and can be used effectively for large scale for finding out surface and
subsurface defects. Incase if MPI or LPT or Eddy Current can be
used, is there any particular method or apart from these any
other method is available. Has anybody ever tried the above methods
on large scale inspection. If anybody can help me out, I will be
obliged
regards
ram
sharpndt@vsnl.com


 
 Reply 
 
Ingo Becker
Engineering, NDT Inspector & Sales
ec-works GmbH, Germany, Joined Apr 2000, 30

Ingo Becker

Engineering, NDT Inspector & Sales
ec-works GmbH,
Germany,
Joined Apr 2000
30
04:21 Jan-11-2001
Re: rails/railway track inspection
Dear Ram,

perhapps you should look for a contact with Dr. Thomas form the BAM in Berlin, Germany. He and his team have developed an eddy current system for the measurement of railway tracks up to a test speed of 80 km/h.
His e-mail-adress: hans-martin.thomas@bam.de

Good luck

Ingo Becker



 
 Reply 
 
Joe Buckley
Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT, United Kingdom, Joined Oct 1999, 526

Joe Buckley

Consultant, ASNT L-III, Honorary Secretary of BINDT
Level X NDT, BINDT,
United Kingdom,
Joined Oct 1999
526
02:23 Jan-12-2001
Re: rails/railway track inspection
rease in cost, complexity, and logistiacl effort required. Approach used is selcetd on many factors, not all technical.

Hope this helps

Joe


: gentlemen,
: we are a NDT Firm based in Mumbai, India. I am interested in an
: NDT Tecniq for finding out surface defects of rails/railway tracks
: I am aware that Ultrasonic Testing is performed by custom built
: systems but would like to know of a NDT Method which is fast and
: accurate and can be used effectively for large scale for finding out surface and
: subsurface defects. Incase if MPI or LPT or Eddy Current can be
: used, is there any particular method or apart from these any
: other method is available. Has anybody ever tried the above methods
: on large scale inspection. If anybody can help me out, I will be
: obliged
: regards
: ram
: sharpndt@vsnl.com




 
 Reply 
 

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