Question

The true strain for a low carbon steel bar which is doubled in length by forging is 1.0 0.307 0.5 0.693

Answer 1

Answer:

The true strain for a low carbon steel bar is 0.6931.

Explanation:

Let’s consider,

the original length of the carbon steel bar be “Lo”

The new length, after being doubled, be “ L ” = 2 Lo

To find: True strain for a low carbon steel bar

The true strain “ ε’ ” is defined as the change in length with respect to the original length i.e.,  

ε’ = ∫ [dL/L] = ln (L / Lo)  

substituting the values in the above formula, we get

ε’ = ln (L / Lo) = ln (2Lo / Lo) = ln 2

∵ ln(2) = 0.6931

∴ ε’ = 0.6931