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 -

NDTSS - Non Destructive Testing Society of Singapore
Visit us at SINCE 2019

608 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!


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

Please try liquid penetrant in lieu of Magnetic Particle.

Regards,


    
 
 
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.


    
 
 

Product Spotlight

Swift & Scorpion2 - a state-of-the-art remote-control ultrasonic crawler

The Swift and Scorpion2 dry-coupled, remote-access ultrasonic crawler bring major efficiency and d
...
ata improvements to tank shell inspections and other structures such as vessels and offshore installations.
>

HD-CR 35 NDT Computed Radiography System

Portable high-resolution CR scanner for all radiography applications - weld testing, profile images
...
and aerospace. No matter what type of radiographic testing you are performing, the unique TreFoc Technology of the HD-CR 35 NDT imaging plate scanner always guarantees the highest image quality.
>

NEOS III

NEOS III is Logos Imagings lightest DR system. With a built-in battery and internal wireless commu
...
nication, the NEOS III is perfect for users that want to quickly assess an item.
>

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