where expertise comes together - since 1996

Web's Largest Portal of Nondestructive Testing (NDT)
Open Access Database (Conference Proceedings, Articles, News), Exhibition, Forum, Network

All Forum Boards
Technical Discussions >
MFL and LFET
Career Discussions
Job Offers
Job Seeks
Classified Ads
About NDT.net
Articles & News

673 views
05:06 Jul-15-2003
Mahmoud M
MFL and LFET

What the difference between MFL with permanent magnets and use low frequency electromagnetic technique


 
02:34 Jul-21-2003

Dana H. Ives

Engineering
CoreStar International Corp.,
USA,
Joined Jan 2003
10
Re: MFL and LFET : What the difference between MFL with permanent magnets and use low frequency electromagnetic technique
.
In a nutshell: MFL uses permanent magnets with all the possible problems associated such as breakage, collection of debris, difficulty in smoothly transiting surfaces that are irregular, etc. LF Electromagnetic techniques require more sophisticated coil excitation circuitry with its associated filtration requirements due to LF noise, lower scan speeds to reduce missing anomolies, etc.


 


© NDT.net - The Web's Largest Portal of Nondestructive Testing (NDT) ISSN 1435-4934

Open Access Database, |Conference Proceedings| |Articles| |News| |Exhibition| |Forum| |Professional Network|