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 -

696 views
Technical Discussions
Dave Utrata
R & D,
Center for NDE, Iowa State University, USA, Joined Feb 2000, 37

Dave Utrata

R & D,
Center for NDE, Iowa State University,
USA,
Joined Feb 2000
37
08:07 Jun-20-2003
magnetic particle application

Hello all,

I'm doing some fine-scale magnetic particle work, looking for subtle discontinuities on small samples. The results with magnetic particle (dry and aerosol) application so far seem extremely sensistive to field gradients at the ends of the sample in our portable yoke (can't use a horizontal wet stand for this work). I wonder if I can overcome this problem by a clever choice of particle size, type and/or application method.

Has anyone had success using something like a fingerprint brush to apply particles? Are any dry particles known to be better for their adherence to indications than others, or is it all a matter of visual contrast in their usage?

Thanks for any help!


 
 Reply 
 
Sasaki
Sasaki
02:35 Jun-24-2003
Re: magnetic particle application
Hello, Dave Utrata

Please try liquid penetrant in lieu of Magnetic Particle.

Regards,


 
 Reply 
 
Lee
Lee
08:52 Jun-24-2003
Re: magnetic particle application
: Hello all,
.
: I'm doing some fine-scale magnetic particle work, looking for subtle discontinuities on small samples. The results with magnetic particle (dry and aerosol) application so far seem extremely sensistive to field gradients at the ends of the sample in our portable yoke (can't use a horizontal wet stand for this work). I wonder if I can overcome this problem by a clever choice of particle size, type and/or application method.
.
: Has anyone had success using something like a fingerprint brush to apply particles? Are any dry particles known to be better for their adherence to indications than others, or is it all a matter of visual contrast in their usage?
.
: Thanks for any help!
.

I would presume you when you say aerosal method, you have tried fluorescent wet mag method under black lighting? If not, this is a highly dependable way of finding very fine discontinuities.


 
 Reply 
 

Product Spotlight

Ultrasonic Probe Recharacterization Service

NDT Systems offers a comprehensive Aftercare and Recharacterization Service for all our ultrasonic
...
probes. The Recharacterization Service is fully compliant with International ASTM E1065 Standard Guide (and other applicable standards) and offers complete documentation, traceable to the ASTM E1065 Standard. For more details or to schedule Recharacterization Services contact ndtsales@ndtsystems.com
>

IntraPhase Athena Phased Array System

The Athena Phased Array system, manufactured by WesDyne NDE Products & Technology, consists of a pha
...
sed array acquisition system and PC running IntraSpect software. A PC is used to perform acquisition, analysis and storage of the data. System hardware is capable of operating up to four data sets with any combination of phased array or conventional UT probes. NOW AVAILABLE IN 64-64 CONFIGURATION.
>

NDT.net launches mobile-friendly design

NDT.net has revamped its website providing a mobile-friendly design.The front page received a comp
...
letely new design and all other sections are now reacting responsively on mobile devices. This has been a major step to make our website more user- friendly.
>

Research Center IDEKO develops an ultrasonic train wheel inspection system for CAF

The Basque Research centre IK4-IDEKO has developed a state-of-the-art ultrasonic inspection system f
...
or the train wheel. This system secures a sound condition of train wheels and is thus a significant contribution to rail transport safety. The device was delivered to CAF recently and its use allows the manufacturer to become an approved supplier of rolling stock in Italy, as it meets the demanding homologation standards of this country. \\\\r\\\\n
>

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