Stress-Strain data from a tension test are provided in the table below. The stre
ID: 1920646 • Letter: S
Question
Stress-Strain data from a tension test are provided in the table below. The stress-strain data is plotted on the graph.
13.
The ultimate stress for this material will be approximately:
14.
The modulus of elasticity, E, for this material will be approximately:
15.
The yield stress for this material based on the 0.2% offset method will be equal to:
Stress-Strain data from a tension test are provided in the table below. The stress-strain data is plotted on the graph.
Based on the information provided, select the most appropriate responses to the following:
13.
The ultimate stress for this material will be approximately:
A) 68 ksiB) None of the choices are within 10% of the correct result
C) 58 ksi
D) 74 ksi
E) 80 ksi
14.
The modulus of elasticity, E, for this material will be approximately:
A) 10.5 x 106 psiB) 14.3 x 106 psi
C) None of the choices are within 10% of the correct result
D) 29.2 x 106 psi
E) 8.1 x 106 psi
15.
The yield stress for this material based on the 0.2% offset method will be equal to:
A) None of the choices are within 10% of the correct result.B) 65 ksi
C) 74 ksi
D) 59 ksi
E) 69 ksi
Explanation / Answer
13. D)74 ksi
From the table and graph we can see that maximum stress reached is 74 ksi ,and ultimate stress is the maximum tensile stress attained.
14. A) 10.5 x 106 psi
Modulus of elasticity = slope of the curve in linearly straight region = ( 11.6 - 0 )ksi / [( 1.1 - 0 )*(10^(-3))]
= 10.5 x 106 psi
15. E) 69 ksi
By careful observation we see straight line drawn parallel to straight line portion of stress-strain curve and passing through strain = 0.002 cuts the curve at 69 ksi.