×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

Jobs

Low Poisson's Ratio metal

Low Poisson's Ratio metal

Low Poisson's Ratio metal

(OP)
I am looking for a low poisson's ratio metal (ideally ~.17).
Ideally, a titanium alloy.

We will use it as a "gasket" for a high pressure seal between a glass hemisphere and a metalic housing.

Can anyone help?

thanks in advance!

RE: Low Poisson's Ratio metal

It is doubtful that you can achieve low Poisson's ratio in a monolithic, homogenous solid, which (I would think) you would want for a seal.  Low poisson's ratio materials, and even negative poisson's ratio, are possible for certain foams - google for them.  Cast iron has a low range of possible poisson's ratio, from 0.21 to .25 or so.  Could you instead look for a high-ratio glass?

RE: Low Poisson's Ratio metal

(OP)
We need a very special glass (fused silica) for this project.  I did a little googling; I found a paper on a Ti alloy that had a .14 ratio.  I am guessing that's in the lab, on a 0.5 gram sample, however...

I will keep looking, thanks.

 

RE: Low Poisson's Ratio metal

Try contacting the Titanium producers association they might be able to help

A.R. "Andy" Nelson
Engineering Consultant
anelson@arnengineering.com

RE: Low Poisson's Ratio metal

According to MIL-HDBK-5 standard grade beryllium comes out at 0.10.
 

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!


Resources