A tensile bar has an initial 2.000-in. gauge length and a circular cross-sectionalarea of 0.2 in.?. The loads and corresponding gauge lengths recorded in a tensiletest are show below. After fracture the bar diameter was 0.370 in.LoadGauge length(in.)(Ib)2.00006,00012,00015,00018,00021,00024,00025,00022,0002.00172.00342.00422.00882.0432.302.55B.00 g)h)Compute from the data and plot true stress versus true strain diagram.Determine strengh coeficien (K) and strain hardening exponen (n).

Initial length, li= 2.0 in Initial area, ai= 0.2 in2

Answered: A tensile bar has an initial 2.000-in.…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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650 600 550 500 450 400 350 300 250 200 150 100 50 0.002 0.004 0.006 0.008 0.01 0.012 0.014 0.016 0.018 0.02 Strain mm/mm The graph above shows the stress-strain relationship of a steel bar under tension test. The steel bar diameter = 8 mm and the bar gauge length = 100 mm. Determine the following: Toughness of the specimen Stress (MPa)
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A bar specimen of 36 mm diameter is subjected to a pull of 90 kN during a tension test. The extension on a gauge length of 200 mm is measured to be 0.089 mm and the change in diameter to be 0.0046 mm. The Poisson's ratio will be
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The results of a tensile test are shown in Table 1.5.2. The test was performed on a metal specimen with a circular cross section. The diameter was 3⁄8 inch and the gage length (the length over which the elongation is measured) was 2 inches. a. Use the data in Table 1.5.2 to produce a table of stress and strain values. b. Plot the stress–strain data and draw a best-fit curve. c. Compute the modulus of elasticity from the initial slope of the curve. d. Estimate the yield stress
Procedure: 1. Compression tests on specimens shall be made as soon as practicable after removal from the moist storage. A 28-day test shall be performed within +-20 hours of the 28thday. Test specimens shall be kept moist by any convenient method during the period between removals from moist storage and testing. They shall be tested in moist condition. 2. All test specimens for a given test age shall be broken within the permissible time tolerance prescribed below. TEST AGE PERMISSIBLE TOLERANCE 24 HOURS +-0.5 HOURS OR 2.1% 3 DAYS 2 HOURS OR 2.8% 7 DAYS 6 HOURS OR 3.6% 28 DAYS 20 HOURS OR 3.0% 90 DAYS 2 DAYS OR 2.2 % 3. With a clean rag or rush clean the bearing faces of the bearing blocks, test the specimens and exclusion controller (elastomeric cps). 4. Rest the specimen on the lower extrusion controller, place the top extrusion controller on the specimen, and check the spacing between the sides of the specimen and the extrusion controllers to ensure no contact between the cylinder…

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