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Technical Discussions
Shreefal Mehta
Shreefal Mehta
03:16 Nov-20-1999
Monitoring/Testing of fatigue in metals??

Could you please help me find current techniques (ultrasound; laboratory or field-use technique) used to monitor/test metals under conditions of repetitive use to determine risk of fatigue failure?

Thanks
Shreefal Mehta, Ph.D.
shreefal.mehta@email.swmed.edu


    
 
 
Liviu Singher
R & D,
Technion, Israel, Joined Nov 1998, 11

Liviu Singher

R & D,
Technion,
Israel,
Joined Nov 1998
11
02:41 Nov-21-1999
Re: Monitoring/Testing of fatigue in metals??



    
 
 
Godfrey Hands
Engineering,
PRI Nadcap, United Kingdom, Joined Nov 1998, 287

Godfrey Hands

Engineering,
PRI Nadcap,
United Kingdom,
Joined Nov 1998
287
08:49 Nov-22-1999
Re: Monitoring/Testing of fatigue in metals??
: Could you please help me find current techniques (ultrasound; laboratory or field-use technique) used to monitor/test metals under conditions of repetitive use to determine risk of fatigue failure?

: Thanks
: Shreefal Mehta, Ph.D.
: shreefal.mehta@email.swmed.edu

Hi,
I ave been working with the "Resonant Fingerprint" method of condition monitoring for high value individually identifiable components.
In this method, the Resonant Fingerprint (either in the acoustic or ultrasonic range) is recorded when the component or structure is new or in known good condition, and again at regular periods or when the component has been subjected to a traumatic stress. Changes in the fingerprint signify changes in the structural integrity of the component.

Contact me for more details, or see Insight August 1988, pages 500 to 503.
Phone +44 24 7632 0812
Fax +44 24 7632 0813
email Godfrey@hands-ndt.co.uk
Godfrey Hands




    
 
 
Godfrey Hands
Engineering,
PRI Nadcap, United Kingdom, Joined Nov 1998, 287

Godfrey Hands

Engineering,
PRI Nadcap,
United Kingdom,
Joined Nov 1998
287
08:49 Nov-22-1999
Re: Monitoring/Testing of fatigue in metals??
: Could you please help me find current techniques (ultrasound; laboratory or field-use technique) used to monitor/test metals under conditions of repetitive use to determine risk of fatigue failure?

: Thanks
: Shreefal Mehta, Ph.D.
: shreefal.mehta@email.swmed.edu

Hi,
I have been working with the "Resonant Fingerprint" method of condition monitoring for high value individually identifiable components.
In this method, the Resonant Fingerprint (either in the acoustic or ultrasonic range) is recorded when the component or structure is new or in known good condition, and again at regular periods or when the component has been subjected to a traumatic stress. Changes in the fingerprint signify changes in the structural integrity of the component.

Contact me for more details, or see Insight August 1988, pages 500 to 503.
Phone +44 24 7632 0812
Fax +44 24 7632 0813
email Godfrey@hands-ndt.co.uk
Godfrey Hands




    
 
 
Jens Forker
Jens Forker
01:32 Dec-20-1999
Re: Monitoring/Testing of fatigue in metals??
: Could you please help me find current techniques (ultrasound; laboratory or field-use technique) used to monitor/test metals under conditions of repetitive use to determine risk of fatigue failure?

: Thanks
: Shreefal Mehta, Ph.D.
: shreefal.mehta@email.swmed.edu

Acoustic Emission testing (passive listening/detection to acoustic waves emitted when sudden material changes, e.g. crack growth, take place) is a method which can help. You can easily achieve integral monitoring of your sample and get online information.

for further information see our homepage www.vallen.de or contact me directly.
Jens Forker



    
 
 
sdf
sdf
07:44 Dec-01-2000
Re: Monitoring/Testing of fatigue in metals??
: : Could you please help me find current techniques (ultrasound; laboratory or field-use technique) used to monitor/test metals under conditions of repetitive use to determine risk of fatigue failure?

: : Thanks
: : Shreefal Mehta, Ph.D.
: : shreefal.mehta@email.swmed.edu

: Hi,
: I have been working with the "Resonant Fingerprint" method of condition monitoring for high value individually identifiable components.
: In this method, the Resonant Fingerprint (either in the acoustic or ultrasonic range) is recorded when the component or structure is new or in known good condition, and again at regular periods or when the component has been subjected to a traumatic stress. Changes in the fingerprint signify changes in the structural integrity of the component.

: Contact me for more details, or see Insight August 1988, pages 500 to 503.
: Phone +44 24 7632 0812
: Fax +44 24 7632 0813
: email Godfrey@hands-ndt.co.uk
: Godfrey Hands




    
 
 
H. N. Singh
H. N. Singh
01:49 Aug-12-2002
Re: Monitoring/Testing of fatigue in metals??
COuld u tell any method for evaluating fatigue life valuation using NDT method
: Thanks
: H N SIngh.
: hemnarain@rediffmail.com





    
 
 

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