- #1
pecosbill
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Homework Statement
What is the ultimate tensile strength if necking begins at a true strain = 0.25 in a material whose stress strain curve obeys the relation:
sigma=120000(epsilon)^1/2 psi?
Homework Equations
The Attempt at a Solution
I'm kind of stumped on this. I really doesn't understand what's going on, but I know the answer is 116,700 psi.