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Various types of idealized stress-strain curves

The true slid...

Question

The true sliding strain for a low carbon steel bar which is doubled in length by forging is

A

0.307

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B

0.5

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C

0.693

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D

1.0

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Solution

The correct option is C 0.693
Engineering strain:

$ϵ = \frac{2 l - l}{l} = 1$

True strain = $l n (1 + ϵ) = l n 2 = 0.693$

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