Podcast
Questions and Answers
What does the graph in Figure (b) represent?
What does the graph in Figure (b) represent?
- Strain versus time for a tensile test on a steel specimen
- Stress versus time for a tensile test on a steel specimen
- Strain versus stress from a compression test on a steel specimen
- Stress versus strain from a tensile test on a steel specimen (correct)
What mechanical properties can be determined from the stress-strain plot?
What mechanical properties can be determined from the stress-strain plot?
- Fatigue strength, creep resistance, and impact strength
- Elongation, reduction in area, and fatigue limit
- Hardness, ductility, and toughness
- Modulus of elasticity, yield strength, and tensile strength (correct)
Why must the metal alloy(s) used for suspender cables in a suspension bridge meet certain stiffness and strength criteria?
Why must the metal alloy(s) used for suspender cables in a suspension bridge meet certain stiffness and strength criteria?
- To increase the flexibility of the bridge structure
- To reduce the overall weight of the bridge
- To withstand the tensile forces imposed by the weight of the bridge deck and automobiles (correct)
- To improve the aesthetic appearance of the bridge
What shape does the main suspension cable of a suspension bridge sag in when under tensile forces?
What shape does the main suspension cable of a suspension bridge sag in when under tensile forces?
What is the purpose of using a tensile-testing apparatus similar to the one shown in Figure (a)?
What is the purpose of using a tensile-testing apparatus similar to the one shown in Figure (a)?
What mechanical properties are determined from the stress-strain plot?
What mechanical properties are determined from the stress-strain plot?
What does the sag shape of the main suspension cable in a suspension bridge resemble?
What does the sag shape of the main suspension cable in a suspension bridge resemble?
What is the primary purpose of the apparatus shown in Figure (a)?
What is the primary purpose of the apparatus shown in Figure (a)?
What is the relationship between strain and applied force in a tensile test?
What is the relationship between strain and applied force in a tensile test?
What criteria must the metal alloy(s) used for suspender cables meet?
What criteria must the metal alloy(s) used for suspender cables meet?
