×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Materials blocking Magnetic fields
2

Materials blocking Magnetic fields

Materials blocking Magnetic fields

(OP)
Will someone please inform me of any materials that will block magnetic fields. I am needing to rest two magnets with opposite poles ontop of each other for an experiment.
I would appreciate any help.

RE: Materials blocking Magnetic fields

I think your only option is to put a soft magnetic material between them that will direct flux away.  

A typical material used for screening is mumetal:
http://www.goodfellow.com/csp/active/static/A/NI03.HTML
This has extremely high permeability making it very receptive to carrying flux with no leakage.

However the cross sectional area must be large as it saturates fairly easily.

RE: Materials blocking Magnetic fields

On a practical basis nothing will block magnetic fields. Superconducting materials will but I suspect that is beyond the practical for you.

What UKpete is telling you is that the only recourse for you is to divert the flux lines using a material that easily carries flux. The amount of material depends on the size of your permanent magnets and to what degree you wish to reduce the fields. While he suggests mumetal it is not readily available as perhaps mild steel (low carbon) sheet or bar stock.

Mild steel arranged properly will be your least expensive and most readily available alternative.



RE: Materials blocking Magnetic fields

Can youdescribe the experiment? By the way, someone may
be predict the resultof your experiment based on his
expertise and make the actual experiment unnecessary...

Plesae read FAQ240-1032
<nbucska@pc33peripherals.com> omit 33 Use subj: ENG-TIPS

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close