True or False

640 480 160 0.002 0,004 0.006 0.008 0.010 Strain (mm/mm) A tensile test specimen of Aluminum alloy having a gauge length of 280 mm was tested to fracture. Stress and strain data obtained during the test are shown in the attached Figure. **Answers are approximate - do your best to read the graph. Determine: (a) the modulus of elasticity in GPa (4sigs). Enter this value into D2L answer box. (b) the proportional limit in MPa (3sigs). (c) the ultimate strength in MPa (3sigs). (d) Ductility of material based on percent elongation. (3sigs) Your Answer: Stress (MPa)

The following data was obtained as a result of tensile testing of a standard 0.505 inch diameter test specimen of magnesium.  After fracture, the gage length is 2.245 inch and the diameter is 0.466 inch. a). Calculate the engineering stress and strain values to fill in the blank boxes and plot the data. Load(lb) Gage Length (in) Stress (kpsi) Strain 0 2     1000 2.00154     2000 2.00308     3000 2.00462     4000 2.00615     5000 2.00769     5500 2.014     6000 2.05     6200 (max) 2.13     6000 (fracture) 2.255     b). Calculate the modulus of elasticity c).  If another identical sample of the same material is pulled only to 6000 pounds and is unloaded from there, determine the gage length of the sample after unloading.

Brinell Hardness testing can be used for both ferrous and non-ferrous metals. The test for ferrous metals requires a 500 kilogram load for 30 seconds and the test for non-ferrous metals requires a 3,000 kilogram load for 15 seconds. True False   Please answer the photo question

Review Data taken from a stress-strain test for a ceramic are given in the table. The curve is linear between the origin and the first point. No elements selected a(ksi) 50 + 40 - 30 Figure 1 of 1 20 10 + o (ksi) € (in./in.) ex 10(in./in.) 0.5 1.0 1.5 2.0 2.5 33.2 0.0006 45.5 0.0010 Press (ENTER) to select this element. Press ESC) to return to the main menu. Press CTRL+Q) to quit the application. 49.4 0.0014 51.5 0.0018 53.4 0.0022

Please annotate the attached stress strain graph of 0.9% carbon steel to show the different phases. From the graph work out the following: 1) modulus of elasticity 2) tensile strength 3) the ductility in % elongation 4) yield strength at a strain offset of 0.002

5. The following data were collected from a standard 0.505-in.-diameter test specimen of a copper alloy (initial length lo= 2.0 in.). After fracture, the total length was 3.014 in. and the diameter was 0.374 in. Load (Ib) Al (in.) 00000 3,000 6,000 0.00167 0.00333 7,500 0.00417 9,000 10,500 0.0090 0.040 12,000 0.26 12,400 11,400 0.50 (maximum load) 1.02 (fracture) a) Plot the data as engineering stress versus engineering strain. b) Compute the modulus of elasticity. c) Determine the yield strength at a strain offset of 0.002. d) Determine the tensile strength of this alloy. e) What is the approximate ductility, in percent elongation? f) Compute the modulus of resilience. g) Compute from the data and plot true stress versus true strain diagram.

Which one(s) of the following about G, shear modulus of elasticity of a material are correct? select all which are correct.     G is also called the modules of rigidity.     G is related to the modulus of elasticity E and Poisson’s ratio .     G is usually smaller than Young's modulus E for the same material.     G is the ratio of shear stress to shear strain when the material's proportional limit in shear has not been exceeded.

The graph below shows the yield stress for a polycrystalline metal as a function of the grain size of the metal. The point A is (10 microns, 100 MPa) and B is (1000 microns, 28 MPa). Using this data, calculate what is the closest numerical match to the yield stress at 2 microns. yield stress (MPa) 8 8 8 8 8 8 8 80 70 50 40 30 A 200 Select one: O a. 198.9 MPa O b. 310.9 MPa O C. O d. 80.5 MPa 252.6 MPa O e. 165.2 MPa 400 600 grain size d (microns) 800 B ● 1000

Hello, I hope you are fine. I need to do this homework in Metal Engineering. I hope to get your help because I have an important homework.

Determine the percentage of ductility of a metal alloy having the following tensile stress-strain diagram. 600 500E 400 500 300 400E 300 200 200 100 100 0.000 0.002 0.004 0.006 Strain 0.00 0.04 0.08 0.12 0.16 0.20 Strain EN Stress (MPa) Stress (MPa)