Question

QUESTION 1 For the aluminium wire, when unloaded past its yield point, what did you observe as far as the unloading curve is concerned? The load dropped with no recovery of deformation, i.e the curve dropped straight down vertically The load dropped, the unloading line having a slope approximately parallel to the initial loading curve The load dropped and if the load was reduced to zero there would have been complete recovery of the load. QUESTION 2 If the maximum force recorded is 3682 N, calculate the ultimate tensile strength of the annealed mild steel specimen, in MPa? (Initial dimensions of the specimen = 4.9 mm and 2.7 mm) QUESTION 3 For a bronze alloy, the stress at which plastic deformation begins is 160 MPa and the modulus of elasticity is 120 GPa. What is the maximum load (in N) that may be applied to a cylindrical specimen having a diameter of 10 mm without plastic deformation?

          QUESTION 1
For the aluminium wire, when unloaded past its yield point, what did you observe as far as the unloading curve is concerned?
The load dropped with no recovery of deformation, i.e the curve dropped straight down vertically
The load dropped, the unloading line having a slope approximately parallel to the initial loading curve
The load dropped and if the load was reduced to zero there would have been complete recovery of the load.
QUESTION 2
If the maximum force recorded is 3682 N, calculate the ultimate tensile strength of the annealed mild steel specimen, in MPa? (Initial dimensions of the specimen = 4.9 mm and 2.7 mm)
QUESTION 3
For a bronze alloy, the stress at which plastic deformation begins is 160 MPa and the modulus of elasticity is 120 GPa.
What is the maximum load (in N) that may be applied to a cylindrical specimen having a diameter of 10 mm without plastic deformation?

QUESTION 1
For the aluminium wire, when unloaded past its yield point, what did you observe as far as the unloading curve is concerned?
The load dropped with no recovery of deformation, i.e the curve dropped straight down vertically
The load dropped, the unloading line having a slope approximately parallel to the initial loading curve
The load dropped and if the load was reduced to zero there would have been complete recovery of the load.
QUESTION 2
If the maximum force recorded is 3682 N, calculate the ultimate tensile strength of the annealed mild steel specimen, in MPa? (Initial dimensions of the specimen = 4.9 mm and 2.7 mm)
QUESTION 3
For a bronze alloy, the stress at which plastic deformation begins is 160 MPa and the modulus of elasticity is 120 GPa.
What is the maximum load (in N) that may be applied to a cylindrical specimen having a diameter of 10 mm without plastic deformation?

Added by Celia R.

Question

Please give Ace some feedback