Question

In a tensile test, a material fractured before necking. The corresponding true stress and true strain were 630 MPa and 0.18, respectively. What is the tensile strength of the material?​

Answer 1

Answer:

526 Mpa

Explanation:

s(1+e)=σ

㏑(1+e)=∈

e=exp(0.18)-1

e=0.197

s=σ/(1+e)

s=630/1.197

s=526 MPa

Answer 2

Thus the tensile strength of the material is 526 Mpa.

Explanation:

We are given that:

• Stress of the material = 630 Mpa
• Strain of the material = 0.18

Solution:

The engineering strain at fracture was  equal to

e = exp(0.18) − 1 = 0.197.

Because

s = σ/(1 + e)

The tensile strength = 630 / 1.197

Tensile strength =526 MPa

Thus the tensile strength of the material is 526 Mpa.