Virtual Lab Fracture Test
- Tension Test Quiz - Answers
- 1. Ultimate tensile strength
- 2. Engineering stress
- 3. Modulus of toughness
- 4. Necking
- 5. Gage length
- 6. A straight line
- 7. Modulus of elasticity
- 8. Brittle failure
- 9. Strain hardening
- 10. Modulus of resilience
- 11. Modulus of toughness
- 12. Strain-gage extensometer
- 13. Lueder’s lines
- 14. Poisson’s ratio
- 15. True stress
- 16. higher
- 17. lesser
- 18. Ductility
- 19. Less
- 20. Poisson’s ratio
- 21. One-half
- 22. Shear modulus (G)
- Tension Test Quiz and Answers
1. The max load a specimen can withstand divided by its original cross-sectional area is defined as _____________________
Answer. Ultimate tensile strength
2. The ratio of applied load to original cross-sectional area is defined as __________________
Answer. Engineering stress
3. The energy required to stretch a unit volume of a material to failure is defined as ______________________
Answer. Modulus of toughness
4. Sudden localized reduction in the cross-sectional area of a specimen is defined as ___________________
Answer. Necking
5. The distance between the attachment points of an extensometer is defined as _________________
Answer. Gage length
6. What type of stress-strain curve is associated with linear elastic behavior?
Answer. A straight line
7. The slope of the linear portion of the stress-strain curve is the graphic representation of ____________________
Answer. Modulus of elasticity
8. The type of fracture surface that is rough in texture and is perpendicular to the longitudinal axis of the specimen is characteristic of _________________
Answer. Brittle failure
9. After the lower yield point is reached, more stress must be applied to increase the strain. The effect of this property is known as _____________<
Answer. Strain hardening
10. The area under a stress-strain curve up to the proportional limit is the graphic equivalent of the _____________________
Answer. Modulus of resilience
11. The area under a complete stress-strain diagram is the graphic equivalent of the ___________________
Answer. Modulus of toughness
12.What is the instrument used to measure elongation in a tensile test?
Answer. Strain-gage extensometer
13. Dull diagonal lines that appear on a polished specimen in tension and are oriented at about 550 to the specimen axis and indicate the presence of diagonal shear stresses are defined as ______________
Answer. Lueder’s lines
14. The ratio of negative lateral strain to longitudinal strain is defined as ________________
Answer. Poisson’s ratio
15. The ratio of applied load to actual cross-sectional area is defined as ____________
Answer. True stress
16. Does a high carbon content indicate a higher or lower ultimate strength than a low one?
a) Higher
b) Lower
c) Both
d) None
Answer. Higher
17. Does a high carbon content indicate a greater or lesser ductility than a low one?
a) Lesser
b) Greater
c) Both
d) None
Answer. Lesser
18. Are elongation and necking indicators of ductility or brittleness?
a) Ductility
b) Brittleness
c) Both
d) None
Answer. Ductility
19. If one material has higher elastic modulus than another, does it elongate more or less?
a) More
b) Less
c) None
d) No change
Answer. Less
20. The slope of a graph of lateral strain vs. longitudinal strain is constant in the elastic range and changes to a higher constant in the plastic range. This is a graphic representation of _______________
Answer. Poisson’s ratio
21. What is the value of Poisson’s ratio during plastic deformation for most materials?
Answer. One-half
22. If pure shear stress is applied, the elastic response of the material is characterized by _____________
Answer. Shear modulus (G)
