Manufacturing Engineering & Technology
7th Edition
ISBN: 9780133128741
Author: Serope Kalpakjian, Steven Schmid
Publisher: Prentice Hall
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Chapter 2, Problem 57QTP
Percent elongation is always defined in terms of the original gage length, such as 50 mm or 2 in. Explain how percent elongation would vary as the gage length of the tensile-test specimen increases. (Hint: Recall that necking is a local phenomenon.)
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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 %.
Initial Cross-sectional Area 2.01 mm2.
The Diameter of the Specimen 1.59 mm.
Final Length of the Specimen 42.92 mm.
Stress at the elastic load 8955.22 N/mm2.
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)
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)
The following data are obtained from a tensile test of a copper specimen.
- The load at the yield point is 157 kN.
- Length of the specimen is 23 mm.
- The yield strength is 89 kN/mm2.
- The percentage of elongation is 45 %.
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 1.3 mm at 18 kN
and
Final diameter if the percentage of reduction in area is
25 %.
Fine this ans
1-Initial Cross-sectional Area (in mm2)
2-The Diameter of the Specimen (in mm)
3-Final Length of the Specimen (in mm)
4-Stress at the elastic load (in N/mm2)
5-Young's Modulus of the Specimen (in N/mm2)
6-Final Area of the Specimen at Fracture (in mm)
7-Final Diameter of the Specimen after Fracture (in mm)
Chapter 2 Solutions
Manufacturing Engineering & Technology
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- Please do it properly, with explanation.arrow_forwardplease answer i) and ii)arrow_forwardThe 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 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)arrow_forward
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