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!
  • Students Click Here

*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


Poisson Ratio for polymers

Poisson Ratio for polymers

Poisson Ratio for polymers

I'm trying to find the Poisson ratio for a number of polymers and composites but I'm having trouble doing so.  Is there a reason that this information is so hard to come by?  I know that most polymers have a range of 0.3 to 0.5, but specific values are needed for this application.

The materials in question are:

EMI 262
EMI 361    
RTP 681    
Ultem 1000

Thank you for your help!

RE: Poisson Ratio for polymers


I use 0.38 for ABS and PC.

Generally I use 0.4 for thermoplastics, near 0.5 for rubberlike polymers and down to min 0.35 for glass filled or mineral filled polymers.

This is due for RT and moderate strain levels. At high level of plastic strain you would need something else to be correct.

PC and ABS are amorphous polymer and shuold be quite stable in their using temperatures.  

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!


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