The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 142 kN. - Length of the specimen is 23 mm. - The yield strength is 82 kN/mm2. - The percentage of elongation is 48 %. Determine the following (i) Diameter of the specimen, ii) Final length of the specimen, iii) Stress under an elastic load of 15 kN, iv) Young's Modulus if the elongation is 1.6 mm at 15 kN and (v) Final diameter if the percentage of reduction in area is 20 %.
The following data are obtained from a tensile test of a copper specimen.
- The load at the yield point is 142 kN.
- Length of the specimen is 23 mm.
- The yield strength is 82 kN/mm2.
- The percentage of elongation is 48 %.
Determine the following
(i) Diameter of the specimen,
ii) Final length of the specimen,
iii) Stress under an elastic load of 15 kN,
iv) Young's Modulus if the elongation is 1.6 mm at 15 kN and
(v) Final diameter if the percentage of reduction in area is 20 %.
Solution
Initial Cross-sectional Area (in mm2)
Answer for part 1The Diameter of the Specimen (in mm)
Answer for part 2Final Length of the Specimen (in mm)
Answer for part 3Stress at the elastic load (in N/mm2)
Answer for part 4Young's Modulus of the Specimen (in N/mm2)
Answer for part 5Final Area of the Specimen at Fracture (in mm)
Answer for part 6Final Diameter of the Specimen after Fracture (in mm)
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