Question 2 In a mechanical lab, a tensile test was performed on a rod of alloy having an original diameter 22 mm and length 100 mm to fracture. The fractured alloy was elongated to 113 mm and the diameter of the fracture part becomes 18 mm, as shown in Figure 2.1. Figure 2.2 is the stress-strain curve obtained from the test. Given the yield strength (øy) value of the alloy is 170 MPa. (a) Analyse the value of engineering stress, true stress, and safety factor when the rod is loaded with a tensile force of 40 kN. (b) Analyse the engineering strain on x, y and z-axis direction for the alloy at this tensile force. (c) Calculate the percentage of elongation and percentage of reduction area of the alloy from the test. ---- Lo = 100 mm Do = 22 mm Li = 113 mm DI = 18 mm After test [Selepas ujian] Before test [Sebelum ujian] Figure 2.1
Question 2 In a mechanical lab, a tensile test was performed on a rod of alloy having an original diameter 22 mm and length 100 mm to fracture. The fractured alloy was elongated to 113 mm and the diameter of the fracture part becomes 18 mm, as shown in Figure 2.1. Figure 2.2 is the stress-strain curve obtained from the test. Given the yield strength (øy) value of the alloy is 170 MPa. (a) Analyse the value of engineering stress, true stress, and safety factor when the rod is loaded with a tensile force of 40 kN. (b) Analyse the engineering strain on x, y and z-axis direction for the alloy at this tensile force. (c) Calculate the percentage of elongation and percentage of reduction area of the alloy from the test. ---- Lo = 100 mm Do = 22 mm Li = 113 mm DI = 18 mm After test [Selepas ujian] Before test [Sebelum ujian] Figure 2.1
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![Question 2
In a mechanical lab, a tensile test was performed on a rod of alloy having an original diameter 22
mm and length 100 mm to fracture. The fractured alloy was elongated to 113 mm and the diameter
of the fracture part becomes 18 mm, as shown in Figure 2.1. Figure 2.2 is the stress-strain curve
obtained from the test. Given the yield strength (ơy) value of the alloy is 170 MPa.
(а)
Analyse the value of engineering stress, true stress, and safety factor when the rod is loaded
with a tensile force of 40 kN.
(b)
Analyse the engineering strain on x, y and z-axis direction for the alloy at this tensile force.
(c)
Calculate the percentage of elongation and percentage of reduction area of the alloy from
the test.
Lo = 100 mm
Do = 22 mm
Li = 113 mm
Di = 18 mm
Before test
After test
[Sebelum ujian]
[Selepas ujian]
Figure 2.1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fac98d9a0-d519-4a99-b7e5-54f2c7c19afc%2F8ad123a4-daa5-4d79-a93c-fb3ace864099%2Fionanxp_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Question 2
In a mechanical lab, a tensile test was performed on a rod of alloy having an original diameter 22
mm and length 100 mm to fracture. The fractured alloy was elongated to 113 mm and the diameter
of the fracture part becomes 18 mm, as shown in Figure 2.1. Figure 2.2 is the stress-strain curve
obtained from the test. Given the yield strength (ơy) value of the alloy is 170 MPa.
(а)
Analyse the value of engineering stress, true stress, and safety factor when the rod is loaded
with a tensile force of 40 kN.
(b)
Analyse the engineering strain on x, y and z-axis direction for the alloy at this tensile force.
(c)
Calculate the percentage of elongation and percentage of reduction area of the alloy from
the test.
Lo = 100 mm
Do = 22 mm
Li = 113 mm
Di = 18 mm
Before test
After test
[Sebelum ujian]
[Selepas ujian]
Figure 2.1
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