In the compression test of mild steel, the true stress-strain cur
| In the compression test of mild steel, the true stress-strain curve lies
A. below engineering stress-strain curve
B. above the engineering stress-strain curve
C. coincident to engineering stress-strain curve
D. compression test is not performed for mild steel
Please scroll down to see the correct answer and solution guide.
Right Answer is: A
SOLUTION
Concept:
- In the case of the Tension test of mild steel, the actual stress-strain curve lies above the engineering stress-strain curve.
- In the case of the Compression test of mild steel, the actual stress-strain curve lies below the engineering stress-strain curve.
- In both cases, i.e. in tension and compression test, the slope of the stress-strain diagram is nearly equal and hence Young’s modulus can be taken as same for mild steel.
Fig: True and engineering stress-strain curve in tension and compression of mild steel.
