2/ Aluminum tensile specimen with 12.5mm diameter, a gauge length of 50.8mm and the final ameter was 10.5mm. • Plot the engineering stress-strain curve and the true stress- strain curve. • Determine proportion limit, young's modulus, the yield point, the ultimate tensile strength, the failure stress on drawing? • Determine Ductility? • Determine Resilience modulus and toughness modulus? Strain mm/mm Apparent Stress N/mm 100 0.006 0.008 0.012 0.017 200 150 0.22 480 0.004 0.25 0.27 410 290 325 450

2/ Aluminum tensile specimen with 12.5mm diameter, a gauge length of 50.8mm and the final ameter was 10.5mm. • Plot the engineering stress-strain curve and the true stress- strain curve. • Determine proportion limit, young's modulus, the yield point, the ultimate tensile strength, the failure stress on drawing? • Determine Ductility? • Determine Resilience modulus and toughness modulus? Strain mm/mm Apparent Stress N/mm 100 0.006 0.008 0.012 0.017 200 150 0.22 480 0.004 0.25 0.27 410 290 325 450

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Was there a discrepancy between the values of Young's Modulus found in the tensile test and the bending test? If so, why does this occur?
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The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 143 kN. - Length of the specimen is 29 mm. - The yield strength is 71 kN/mm2. - The percentage of elongation is 48 %. Determine the following Diameter of the specimen, Final length of the specimen, Stress under an elastic load of 18 kN, Young's Modulus if the elongation is 1 mm at 18 kN and Final diameter if the percentage of reduction in area is 29 %. FIND: Young's Modulus of the Specimen (in N/mm2) Final Area of the Specimen at Fracture (in mm) Final Diameter of the Specimen after Fracture (in mm)
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Tensile test is a method to investigate the elasticity of a material. A test specimen is placed between two clamps and these clamps will move in opposite directions, hence straining the test specimen. This experiment will yield a stress-strain curve that shows each of the stages of the specimen for every load is applied. With an aid of sketching diagrams, describe the stages that the specimen experiences before it breaks, and relate it with the stress-strain curve. It is expected that each stage comes with a sketching of the specimen and explanation of the current stage.