1. Money

Your suggestion is on its way!

An email with a link to:


was emailed to:

Thanks for sharing About.com with others!

Most Emailed Articles

How To Fill Out Form W-4

Poisson's Ratio

Definition: When a material is stretched, its cross-sectional area changes as well as it length. Poisson's Ratio is the constant relating these changes in dimensions and is obtained by dividing the change in width per unit length by the change in length per unit length as given by the equation:

This is restricted to small elongations. For rubbery materials,ν is close to 1/2, while for crystals and glasses ν is about 1/4 to 1/3.

See More About
Explore Composites/Plastics
By Category
    compositeComposites/PlasticsmoneyMoneyaf5040b7af000d7d0880e059af5040b7af000e7d0881f472http://composite.about.comod526F6F7479156terminatedTodd Johnsoncompositeguide33G0001MzNIP11970-01-0110/od/index.htm0526F6F741approved/od
  1. About.com
  2. Money
  3. Composites/Plastics
  4. Misc Composite Info
  5. Reference Materials
  6. Glossaries
  7. Poisson's Ratio

©2015 About.com. All rights reserved.