In the case of tensile deformation of a ductile material, the yield point is not sharp and it is unable define it. So for engineering purposes the limit of usable elastic behavior is described by the yield strength, point B. Hence the yield strength is defined as the stress which will produce a small amount of permanent deformation, generally equal to a strain of 0.002 (offset OC). The corresponding stress at point B is called 0.2% offset stress or proof stress.
Thanks and Regards
Harikrishnan N S
On Sun, Jun 24, 2012 at 5:53 PM, Mohit Aggarwal <aggarwalmohit05@gmail.com> wrote:
> Respected Experts,
>
> According to QW-150 we done tension test in procedure in which take two
> samples and dimensions according to section IX.. My query is in graph we
> calculate yield value at 0.2 % offset..What is its meaning actually?
>
>
> Regards
> Mohit Aggarwal.
>
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