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Zawada NDT
Suppliers of instruments to test steel wire ropes in-situ, using magnetic, non-destructive method.
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Technical Discussions
Graham Stephen
Graham Stephen
06:10 Mar-09-1999
Passive UT of steel

My group is involved with developing techniologies for process
monitoring, in particular, for product quality. I am looking
for information and/or references to materials that discuss methods
to calculate UT signals that can be expected from stressing steel
in tensile or compressive tests. Ideally, this would be a passive
technique, however, pulse-echo could also be used. Any assitance
in this regard would be appreciated.


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

Godfrey Hands

Consultant,
PRI Nadcap,
United Kingdom,
Joined Nov 1998
304
06:33 Mar-09-1999
Re: Passive UT of steel
: My group is involved with developing techniologies for process
: monitoring, in particular, for product quality. I am looking
: for information and/or references to materials that discuss methods
: to calculate UT signals that can be expected from stressing steel
: in tensile or compressive tests. Ideally, this would be a passive
: technique, however, pulse-echo could also be used. Any assitance
: in this regard would be appreciated.

Resonant Ultrasound Inspection has shown that resonances are affected by stresses within components. This means that if we can measure the eigen frequencies of a structure or component whilst unstressed, then stress it, we will see a difference in some of the resonances.
By calibrating with such a technology, we should be able to "measure" these stresses.
Please contact me if you think this approach could provide a solution to your application.


 
 Reply 
 
Michael H. Dalichow
Michael H. Dalichow
07:12 Mar-09-1999
Re: Passive UT of steel
The fraunhofer-Institute Nondestructive Testing has developed Process Integrated Nondestructive Techniques (PINT)to measure and/or monitor residual or inherent stress. For further information please contact Dr. Werner Theiner at theiner@izfp.fhg.de.


 
 Reply 
 
Michael H. Dalichow
Michael H. Dalichow
07:13 Mar-09-1999
Re: Passive UT of steel
The Fraunhofer-Institute Nondestructive Testing (IZFP)has developed Process Integrated Nondestructive Techniques (PINT)to measure and/or monitor residual or inherent stress. For further information please contact Dr. Werner Theiner at theiner@izfp.fhg.de.


 
 Reply 
 

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