Stress-Strain Curve Quiz

What does the point labeled 'E' on the stress-strain curve represent?

• Elastic limit

• Ultimate tensile strength

• Yield point

• Fracture point

What does the point labeled 'C' on the stress-strain curve represent?

• X

• Y

• Slope

• Stress

What does the point labeled 'A' on the stress-strain curve represent?

• Strain

• Stress

• Yield point

• Fracture point

What does the point labeled 'B' on the stress-strain curve represent?

• Strain

• Stress

• Yield point

• Fracture point

What does the point labeled 'D' on the stress-strain curve represent?

• Strain

• Stress

• Yield point

• Fracture point

What does the point labeled 'F' on the stress-strain curve represent?

• Strain

• Stress

• Yield point

• Fracture point

What is the significance of the region labeled 'Strain Hardening' on the stress-strain curve?

• Material becomes more ductile

• Material becomes more brittle

• Material increases in strength

• Material decreases in strength

What does the slope of the initial straight portion of the stress-strain curve represent?

• Yield strength

• Young's Modulus

• Ultimate tensile strength

• Fracture toughness

A 100in long steel rod has a cross-sectional area of 0.12in^2. The rod is a part of a vertical support that holds a heavy 1235 lbs that hangs attached to the rod’s lower end. Ignoring the weight of the rod, what is the stress in the rod and the elongation (change in length) of the rod under the stress knowing E= 29,000,000 psi for steel.  Find Stress σ

• 10298.66 lbs

• 10291.67 lbs

• 10291.67 psi

• 10298.66 psi

A 100in long steel rod has a cross-sectional area of 0.12in^2. The rod is a part of a vertical support that holds a heavy 1235 lbs that hangs attached to the rod’s lower end. Ignoring the weight of the rod, what is the stress in the rod and the elongation (change in length) of the rod under the stress knowing E= 29,000,000 psi for steel.  Find Strain ε

• 0.00345

• 0.000345

• 0.00355

• 0.000355