In a tensile test on a steel specimen, true strain = 0.12 at a stress of 250 MPa. When true stress = 350 MPa, true strain = 0.26. Determine the strength coefficient and the strain-hardening exponent in the flow curve equation.

The strength coefficient is and the strain-hardening exponent is

Explanation:

Given the true strain is 0.12 at 250 MPa stress.

Also, at 350 MPa the strain is 0.26.

We need to find   and the .

We will plug the values in the formula.

We will solve these equation.

plug this value in

Taking a natural log both sides we get.

Now, we will find value of

So, the strength coefficient is and the strain-hardening exponent is .

import math

x=int(input("enter a number: "))

print (math.sqrt(math.fabs(