Using linear interpolation determine the DBTT of a given steel with the following Charpy tests results: 18 J at -18°C 28 J at -2°C 45 J at 5°C 60 J at 12°C -3.6°C -4.6°C -5.6°C -2.6°C
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- The data in Table 1.5.3 were obtained from a tensile test of a metal specimen with a rectangular cross section of 0.2011in.2 in area and a gage length (the length over which the elongation is measured) of 2.000 inches. The specimen was not loaded to failure. a. Generate a table of stress and strain values. b. Plot these values and draw a best-fit line to obtain a stress-strain curve. c. Determine the modulus of elasticity from the slope of the linear portion of the curve. d. Estimate the value of the proportional limit. e. Use the 0.2 offset method to determine the yield stress.A tensile test was performed on a metal specimen having a circular cross section with a diameter 0. 510 inch. For each increment of load applied, the strain was directly determined by means of a strain gage attached to the specimen. The results are, shown in Table: 1.5.1. a. Prepare a table of stress and strain. b. Plot these data to obtain a stress-strain curve. Do not connect the data points; draw a best-fit straight line through them. c. Determine the modulus of elasticity as the slope of the best-fit line.Estimate the cross-sectional area of a 350S125-27 cold-formed shape.a. If the member is tested in tension, what would be the maximum force the sample could carry before reaching the yield strength if the steel has a yield strength of 33 ksi?b. Would you expect a 96 in. stud to carry the same load in compression?(explain)
- A threaded round steel bar is subjected to a tota axial pull of 8000 lb. If the diameter of the unthreaded portion is 7/8 in., the unit stress in that portion is A. 10,470 psi B. 13,310 psi C. 16,230 psi D. 19,880 psihree steel bars with a diameter of 25 mm and carbon contents of 0.2, 0.5, and 0.8%, respectively. The specimens were subjected to tension until rupture. The load versus deformation results were as shown in Table P3.19. If the gauge length is 50 mm, determine the following: The tensile stresses and strains for each specimen at each load increment. Plot stresses versus strains for all specimens on one graph. The proportional limit for each specimen. The 0.2% offset yield strength for each specimen. The modulus of elasticity for each specimen. The strain at rupture for each specimen. Comment on the effect of increasing the carbon content on the following: Yield strength ii. Modulus of elasticity iii. DuctilityTensile test had made to cylinder shape with diameter 3.0 In and length 5.7 InIt had maximum elastic was under load at (128425x10-2) Iband deformed with 6.2 In length and 2.85 In diameter.This is correspond 0.2 percent yield point.Compute modulus of elasticity (ib/in2)
- Please present FBD/s A tensile test is performed on a brass specimen 10mm in diameter using a gage lenght of 50mm. When the tensile load P reaches a valule of 20kN, the distance between the gage marks has increased by 0.122mm. What is the modulus of elasticitiy of the brass?A steel bar of 22 mm diameter and 8 cm gage length was axially loaded in tension and the following load deformation diagram was obtained. Determine: a) The yield strength by 0.2% off-set method. b) Modulus of elasticity by initial tangent method. c) Modulus of elasticity by tangent method at 2/3 of the yield strength. d) Modulus of elasticity by secant method at 70% of ultimate strength. e) Strain in fracture.Given : Steel: A = 600mm2 ; E = 200 GPa Bronze : A = 900mm2 ; E = 83 GPa Show the complete solution and FBD
- A Brinell test is performed on a steel using a 1.31 in. diameter indenter with a load of 67275 lbs. A 0.75 in. Determine in indentation was measured on the surface of the steel. Determine: a) HBN (psi); b) tensile strength (psi)The composite bar shown in the figure is firmly attached to unyielding supports. An Axial force P = 52 kips is applied at 69∘F. Compute the stress (ksi) in the Aluminum at 118 ∘F. Assume α= 6.5 x 10-6/∘ F for steel and 12.8 x 10-6/∘F for aluminum Given: L1 = 17in; L2 = 11in Your final answer should contain two decimal placesA tensile test was performed on a metal specimen with a diameter of 1⁄2 inch and a gage length (the length over which the elongation is measured) of 4 inches. The data were plotted on a load-displacement graph, P vs. ∆L. A best-fit line was drawn through the points, and the slope of the straight-line portion was calculated to be P y∆L 5 1392 kips yin. What is the modulus of elasticity?