Tensile Test Experiment
1. During a tensile test, which property represents the maximum stress a material can withstand before necking begins?
2. Which instrument measures extension over the gauge length during a tensile test?
3. Which portion of the stress-strain curve follows Hooke's Law?
4. A specimen has an original gauge length of 50 mm and elongates by 0.25 mm. What is the strain?
5. A specimen carries a load of 40 kN and has an original area of 200 mm². What is the engineering stress?
6. Which property is obtained from the slope of the linear portion of the stress-strain curve?
7. A mild steel specimen of diameter 20 mm yields at a load of 82.5 kN. What is the yield stress?
8. A mild steel specimen of diameter 20 mm reaches a maximum load of 155 kN. What is the ultimate tensile stress?
9. A specimen fractures under a load of 72.5 kN and the neck diameter is 10.75 mm. What is the average stress at fracture based on neck area?