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Vallen-Systeme GmbH
The Acoustic Emission Company! Since 1987 Vallen stands for competence and continuity in AE and for reliable business cooperation and support.
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Technical Discussions
Rui Maia
Student
Instituto Superior Tecnico, Portugal, Joined Jan 2002, 1

Rui Maia

Student
Instituto Superior Tecnico,
Portugal,
Joined Jan 2002
1
00:52 Jan-04-2002
Railway optimal fequency

Hello dear friends,

I'm a undergraduate student of Instituto Superior Tecnico at Lisbon, Portugal. Currently I'm doing some research on railway ultrasonic properties. I would like to know if someone could help me whrere to find some articles/books or literature in general about railway acoustic trasmission, best transducers, atenuation properties of rails, optimal transmision frequency and / or mathematical expressions for this themes. Also I would like to know if there is any kind of software that can simulate acoustic transmissions on materials.

Thank you very much for your attention,

Rui Maia


 
 Reply 
 
Philippe Guevremont
Engineering
Earth Tech Canada Inc., Canada, Joined Jan 2002, 2

Philippe Guevremont

Engineering
Earth Tech Canada Inc.,
Canada,
Joined Jan 2002
2
01:02 Jan-04-2002
Re: Railway optimal fequency
Hello Rui,

I'm not aware of any software that can accurately model acoustic emissions in materials under stress. However, for simulating wavefields in solids I refer you to the program Wave2000 Pro from Cyber Logic in NYC. Point your browser to www.cyberlogic.org.

Regards

Philippe Guevremont, P.Eng., M.Eng.


: Hello dear friends,
.
: I'm a undergraduate student of Instituto Superior Tecnico at Lisbon, Portugal. Currently I'm doing some research on railway ultrasonic properties. I would like to know if someone could help me whrere to find some articles/books or literature in general about railway acoustic trasmission, best transducers, atenuation properties of rails, optimal transmision frequency and / or mathematical expressions for this themes. Also I would like to know if there is any kind of software that can simulate acoustic transmissions on materials.
.
: Thank you very much for your attention,
.
: Rui Maia
.



 
 Reply 
 
Tom Nelligan
Engineering,
retired, USA, Joined Nov 1998, 390

Tom Nelligan

Engineering,
retired,
USA,
Joined Nov 1998
390
05:02 Jan-04-2002
Re: Railway optimal fequency
There's a lengthy and detailed section on railway applications of ultrasonic NDT in the "Nondestructive Testing Handbook", volume 7 (Ultrasonic Testing), published by the American Society of Nondestructive Testing. If you can't find it in a technical library, the book can pe purchased from ASNT at .

--Tom Nelligan


 
 Reply 
 

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