Wednesday, August 3, 2011

Re: [MW:12082] 0.2% offset method

Hi
 
Where you didn't get definite yield point, need to use this 0.2% offset method as design proof stress.


 
On Wed, Aug 3, 2011 at 1:13 PM, Ramin Kondori <raminkondori@gmail.com> wrote:
Dear Prashantpan:

In some materials, the stress at which the material changes from elastic to plastic behavior is not easily detected.

In this case, the offset yield strength is determined. A line is constructed parallel to the initial portion of the stress-strain curve but offset by 0.002 in/in (0.2%) from the origin.

The 0.2% offset yield strength is the stress at which the constructed line intersects the stress-strain curve as shown:


Regards
Ramin  Kondori
   QC/Welding Engineer 
         IWE AT 0070
   



On Tue, Aug 2, 2011 at 6:29 PM, prashant pansare <prashantpan_99@yahoo.co.in> wrote:
Dear All,
In some of the materials we need to go for 0.2% offset method for Y.S. Why?
& 0.2% of which value is to be calculated?
Thanx & Regds,
PSP

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Thanks & regards,

K.Babu

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