The stress-strain behavior of a steel alloy was determine using a cylindrical test specimen having a diameter of 15.000 mm. The stress-strain plot for this steel alloy is shown in the figure below. Using this figure, answer the following questions: (a) Determine the yield stress at a strain offset of 0.002 Oy = 350 MPa] (b) What was the fracture stress? Ox=400MPa (c) When a load of 86,000 N was applied to the test specimen did it experience elastic or plastic deformation? Explain your answer. (d) If the original gauge length of the test specimen was 250.00 mm, what was the increase in length when the load of 86,000 N was applied. Note: For part (e) below, do not used the strain value from the plot. (e) Given that for the steel, E = 210 GPa and y = 0.3) calculate: (i) The increase in length on a gauge length of 250.00 mm when a load of 35,000 N is applied. (ii) The longitudinal strain when the 35,000 N load was applied. (iii) The new diameter of the specimen with the 35,000 N load applied Stress (MPa) 600 500 400 -500- ✗ 300 400 200 Stress (MPa) 300 200 100 100 0.000 0.002 0.004 0.006 Strain 0.00 0.04 0.08 0.12 0.16 0.20 Strain

A cylindrical specimen of aluminum is pulled in tension. Use the stress v. strain plot below for this specimen of Al to answer parts (a) - (f). Hint: Each strain increment is 0.004. Be sure to include your engineering problem solving method per the class rubric. 400 350 300 250 Stress (MPa) 200 150 100 50 Aluminum (Stress v. Strain) 0 0 0.02 0.04 0.06 0.08 Strain 0.1 0.12 0.14 0.16 a. Compute the modulus of elasticity. b. Determine the yield strength at a strain offset of 0.002. c. Determine the tensile strength of this metal. d. Compute the ductility in percent elongation. e. Compute the modulus of resilience. f. Determine the elastic strain recovery for an unloaded stress of 340 MPa.

solve the question given in the image.

I just can't find The percent elongation at fracture.

D and E please

1. For the stress-strain curve shown below, please estimate the properties indicated. (a) Fracture Strain Please do your work on a separate sheet of paper, and put your answers in the boxes on the right. Be sure to include the proper symbol and units. Stress Strain 70 60 50 Stress (ksi) 240 30 20 10 70 0 0.000 60 50 Stress (ksi) 40 20 10 KULL 0 0.000 0.010 0.050 0.100 Strain (in/in) Stress Strain 0.020 0.030 Strain (in/in) 0.040 0.150 0.050 (b) Ultimate Tensile Stress (c) Fracture Stress (d) Proportional Limit (e) Elastic Modulus (1) Yield Stress (g) Tensile Toughness (Modulus of Toughness) (h) Modulus of Resilience

Determine the tensile yield strength (0.2% offset) and the maximum strength of a metal alloy having the following tensile stress-strain diagram. 600 500 400 500 300 400 300E 200 3200 100 100E 0.000 0.002 0.004 0.006 Strain ol 0.00 0.16 0.20 0.08 Strain 0.04 0.12 Select one: O The tensile yield strength Sy = 290 Mpa and the maximum strength Smax = 500 Mpa. O The tensile yield strength Sy = 170 Mpa and the maximum strength Smax = 400 Mca. G The tensile yield strength Sy = 200 Mpa and the maximum strength Smax = 500 Moa. O Tne tensile yield strength Sy = 390 Mpa and the maximum strength Smax= 500 Mpa. The tensile yed strength Sy = 150 Mpa and the maximum strength Smax = 250 Mpa. Stress (MPa) Stress (MPa)

please i need answers with full steps.   thank you!!!

The stress-strain diagram for a steel alloy having an original diameter of 0.5 in. and a gauge length of 2 in. is given in the figure. Deterinine approx- imately: (a) the Modulus of Elasticity for the material (b) the load on the specimen that will canse yielding (c) the ultimate load the specimen will support (d) the Modulus of Resilience (e) the Modulus of Toughness Note that the lower scale supports the lower curve and the upper scale supports the upper curve. The lower eurve is the initial portion of the entire stress-strain curve that is picked up by the upper curve. The two eurves together represent one complete stress-strain curve. For part (e) you can approximate the area under the curves counting boxes. o (ksi) 80 70 - 60- 50 40 30 - 20 10 0. E () Iower scale F0.28- 0.0035 - 0.24– 0.0030 -0.20- 0.0025 -0.16- 0.0020 - 0.12- 0.0015 -0.08- 0.0010 -0.04-0.0005

Part A The stress-strain diagram for a steel alloy having an original diameter of 0.40 in. and a gage length of 9 in. is shown in the figure below. (Figure 1) Determine the modulus of elasticity for the material. Express your answer to three significant figures and include appropriate units. HA ? Eapprox = Value Units Submit Request Answer Figure < 1 of 1 Part B a (ksi) 80 Determine the load on the specimen that causes yielding. 70 Express your answer to three significant figures and include appropriate units. 60 50 40 HA 30 20 Py = Value Units 10 € (in./in.) 0.04 0,08 0.12 0,16 0,20 0,24 0,28 O 0.0005 0.001 0.0015 0.002 0.0025 0.0030.0035 Request Answer Submit