1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B Yield Point vs Elastic Limit

  1. Nov 12, 2017 #1

    Abu

    User Avatar

    I don't understand the difference between the elastic limit and the yield point. I understand that if you stretch a material within the elastic limit, then the material should return to its normal shape. However, the yield point is described as the point at which a permanent increase in length is obtained. So shouldn't the elastic limit and the yield point be the same point on a force by length graph? In the graph the yield point is further past the elastic limit.
    structure_graph4_341_247.gif
    Thank you.
     
  2. jcsd
  3. Nov 13, 2017 #2

    DoItForYourself

    User Avatar
    Gold Member

    You are right.

    Generally, elastic limit is an alternative name for yield point (or yield stress). The distinction of the two points seems weird.
     
  4. Nov 13, 2017 #3
    Since the elastic limit is difficult to find exactly, the yield point is usually defined as 0.2% yield. That's a lot easier to measure, and thus more reproducible.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted