The following data are obtained from a tensile test of a copper specimen. - The load at the yield point is 159 kN. - Length of the specimen is 29 mm. - The yield strength is 82 kN/mm2. - The percentage of elongation is 47 %. Determine the following (i) Diameter of the specimen, ii) Final length of the specimen, iii) Stress under an elastic load of 19 kN, iv) Young's Modulus if the elongation is 2.8 mm at 19 kN and (v) Final diameter if the percentage of reduction in area is 21 %. Solution Initial Cross-sectional Area (in mm2) Answer for part 1 The Diameter of the Specimen (in mm) Answer for part 2 Final Length of the Specimen (in mm) Answer for part 3 Stress at the elastic load (in N/mm2) Answer for part 4 Young's Modulus of the Specimen (in N/mm2) Answer for part 5 Final Area of the Specimen at Fracture (in mm) Answer for part 6 Final Diameter of the Specimen after Fracture (in mm)
The following data are obtained from a tensile test of a copper specimen.
- The load at the yield point is 159 kN.
- Length of the specimen is 29 mm.
- The yield strength is 82 kN/mm2.
- The percentage of elongation is 47 %.
Determine the following
(i) Diameter of the specimen,
ii) Final length of the specimen,
iii) Stress under an elastic load of 19 kN,
iv) Young's Modulus if the elongation is 2.8 mm at 19 kN and
(v) Final diameter if the percentage of reduction in area is 21 %.
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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