A circular steel bar with a length of 200 mm and a radius of 2 cm is strained in a tensile test to point B on the stress-strain curve shown below, and is then unloaded. What is the permanent change in the length of the bar compared to its original length? Stress (MPa) 350 300 250 200 150 100 50 0 0 elastic limit 1.0 2.0 Point B 3.0 Strain (%) 4.0 5.0

A circular steel bar with a length of 200 mm and a radius of 2 cm is strained in a tensile test to point B on the stress-strain curve shown below, and is then unloaded. What is the permanent change in the length of the bar compared to its original length? Stress (MPa) 350 300 250 200 150 100 50 0 0 elastic limit 1.0 2.0 Point B 3.0 Strain (%) 4.0 5.0

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Thermal Properties of Materials

In mechanical engineering, the thermal property is represented as the physical quantity that is relevant to the application of heat. The thermal properties are evaluated by variations in any specific material due to low heat or high heat. The quantities that influence the thermal property of the materials are mass, density, temperature, and many others.

Question

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A circular steel bar with a length of 200 mm and a radius of 2 cm is strained in a tensile test to
point B on the stress-strain curve shown below, and is then unloaded. What is the permanent
change in the length of the bar compared to its original length?
Stress (MPa)
350
300
250
200
150
100
50
0
0
elastic
limit
1.0
2.0
Point B
3.0
Strain (%)
4.0
5.0

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