long proportional MS test specimen was subjected to tension. Determine (Modulus of Resilience - Modulus of Toughness - Elongation percentage) if you know that : Flongation 0.13 121 6 1 20
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- Consider a bar with a rectangular cross-section area with a thickness of t = 0.5 in. and height of h = 3.5 in. When force P = 19 kips is applied to the bar, the strain gages attached to the surface of the bar reads εx = 740 µε along the direction of the force and εy = -170 µε in the perpendicular direction. Determine Poisson's ratio for this specimen? Determine the modulus of elasticity for this specimen?in KsiDuring a tensile test on a specimen the following results were obtained: Load (kN) 15 30 40 50 55 60 65 Extension (mm) 0.05 0.094 0.127 0.157 1.778 2.79 3.81 Load (kN) 70 75 80 82 80 70 Extension (mm) 5.08 7.62 12.7 16.0 19.05 22.9 Diameter of gauge length - 19 mm Gauge length = 100 mm Diameter at fracture = 16.49 mm Gauge length at fracture = 121 mm Plot the complete load extension graph and the straight line portion to an enlarged scale. Hence determine: (a) the modulus of elasticity; (d) the nominal stress at fracture; (b) the percentage elongation; (e) the actual stress at fracture; (c) the percentage reduction in area; (f) the tensile strength. !116 GN/m2; 21%; 24.7%; 247 MN/m2; 328 MN/m2; 289 MN/m2.] 1.10 Figure 1.24 shows a special spanner used to tighten screwed components. A torque is applied at the tommybar and is transmitted to the pins which engage into holes located into the end of a screwed component. (a) Using the data given in Fig. 1.24 calculate: (i) the diameter D of…In a simple tensile test using a cylindrical test specimen (Dia.=10mm), the applied force was 120 kN and the extension was 2%. Find the modulus of elasticity of that specimen. If the standard modulus of elasticity is 200 GPa, is this material accepted or not? and why?
- Tension specimens (diameter d0 0.500 in., gage length L0 2.00 in.) made of structural materials A and B are tested to failure in tension. (a) At failure the distances between the gage marks are LAf 2.90 in. and LBf 2.22 in.; the corresponding diameters at the failure cross sections are dAf 0.263 in. and dBf 0.471 in., respectively. Determine the percent elongation in 2 in. and the percent reduction in area for these two materials, and classify each material as either brittle or ductile. (b) From these tensile tests the following data are also obtained: EA 10.0 103 ksi, (Y)A 5 ksi, (U)A 13 ksi; EB 10.4 103 ksi, (Y)B 73 ksi, (U)B 83 ksi. From the data given here, make rough sketches (to scale) of the stress-strain diagrams of materials A and B.A tensile force of 20 kN is applied to a specimen with a gage length of 50mm. It isthen noted that the distance between the gage marks became 50.122mm. a,) What isthe modulus of elasticity of the specimen if its diameter is 10mm? b.) What is the axialstress of the specimen? Solution must have Free Body Diagram/drawing.a. Assuming the computer and the printer are turned on, what will be the next step to do when trying to perform a test?b. What part of the UTM will you use to remove the tensile test specimen from the grips?c. In what direction does the lower crosshead move during a tensile test?d. In what direction does the lower crosshead move during a compression test?e. In what direction does the lower crosshead move during a bending test?
- Question 2:A specimen is originally 300 mm long, has a diameter of 12 mm, and is subjected to a forceof 2.5 kN. When the force is increased from 2.5 kN to 9 kN, the specimen elongates 0.225mm. Determine the modulus of elasticity for the material if it remains linear elastic.Getting measurements from Figure, determine approximate values of the following items for plain concrete, concrete with 2% steel fibers, and concrete with 3% steel fibers:a. Modulus of elasticityb. Ultimate strengthc. Strain at failured. Toughness. Curves may be approximated with a series of straight lines.e. Comment on the effects of increasing the steel fiber content on items a, b,c, and d above.During a tensile test on a specimen the following results were obtainedload(KN) 15 30 40 50 55 60 65 70 75 80 82 80 70extension(mm) 0.05 0.094 0.127 0.157 1.778 2.79 3.81 5.08 7.62 12.7 16 19.05 22.9diameter of gauge length=19mmdiameter at fracture=16.49mmgauge length=100mmgauge lengthat fracture=121mmplot the complete load extension graph and the straight line portion to an enlarged scale .hence determinethe modulus of elasticitythe percentage elongationthe percentage reduction in areathe nominal stress at fracturethe actual stress at fracturethe tensile strength
- 1.2 A hollow steel rod has a length of 1m. The outside diameter of the rod is 0.2m and the inner diameter is 0.18m. The rod is compressed axially with a load of 200kN. The modulus of elasticity and the Poisson's ratio of the rod are 200GPa and 0.3 respectively. Determine the increase in outside diameter of rod using the calculated value of decrease in length. (The decrease in length=0.17mm)A 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?a liquid compressed in a cylinder has a volume of 1500cm³ at 1 mn/m² and a volume of 1495 cm³ at 2mn/m² . determine the bulk modulus of elasticity. answer must be correct.