The stress-strain diagram for a steel alloy having an original diameter of 0.4 in. and a gage length of 4 in. is shown in the figure below. (Figure 1) Part A Determine the modulus of resilience. Express your answer to three significant figures. vec ? (u, )approx = in-lb in Figure < 1 of 1> Submit Request Answer o (ksi) 80 70 60 Part B 50 Determine the modulus of toughness. 40 30 Express your answer to three significant figures. 20 10 Vol AEO It vec ? e (in./in.) 0 0.04 0.08 0.12 0.16 0.20 0.24 0.28 0 0.0005 0.0010.0015 0.002 0.0025 0.0030.0035 in-kip (4)approx = in

Part A An aluminum 2014-T4 alloy bar 2.50 inches wide and 0.750 inches in thickness has a 1/4 inch radius hole centered on its width, as shown in the sketch. With an axial load, P = 8650 lbs applied, the maximum axial stress at the edges of the hole was experimentally determined to be 7670 psi What is the stress concentration factor, K, of the hole? 1.33 0.75 1.66 1.50 P 2.50 in. -Radius 1/4 in. P= 8650 lbs

In any case ,The final answer must be correct. Please include the Diagram

(b) (i) A tensile test specimen made from 0.4% C steel has a circular cross section of diameter d mm and a gauge length of 25 mm. When a load of 4500 N is applied during the test, the gauge length of the specimen extends to 25.02 mm. If the Young's Modulus of the steel is 199 GPa, calculate the diameter of the tensile test specimen used. 4

Please answer d,e,f

1. The tensile strength vs. temperature curves of aluminum are plotted below. Explain the meaning of these two curves. 400 Ultimate strength 300 Yield strength 200 100 -200 -150 -100 -50 50 100 150 200 250 Temperature, °C Strength, kPa

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(a) the modulus of elasticity in GPa for the Aluminum  B)  the proportional limit in MPa for the Aluminum   C)  the ultimate strength in MPa for the Aluminum  D) Ductility of material based on percent elongation

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The stress-strain curve for mild steel is shown in figure given below. Choose the correct option referring to both figure and table. R Q. R. S. T. U. S U Point on the graph Description of the point P. 1. Upper yield point 2. Ultimate tensile strength 3. Proportionality limit 4. Elastic limit 5. Lower yield point 6. Failure