400 200 Strain 0.05 0.10 0.15 0.20 From your graph, plotting the yield stress against 1/vd, you found that o = 69 MPa and ky = 0.8 MPa.m/2. %3D Find the expected yield stress in MPa when the grain size is 1um. Do NOT include any units. Stress (MPa)
400 200 Strain 0.05 0.10 0.15 0.20 From your graph, plotting the yield stress against 1/vd, you found that o = 69 MPa and ky = 0.8 MPa.m/2. %3D Find the expected yield stress in MPa when the grain size is 1um. Do NOT include any units. Stress (MPa)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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
Transcribed Image Text:A sample of tin alloy has the following stress-strain curve
400
200
Strain
0.05
0.10
0.15
0.20
From your graph, plotting the yield stress against 1/vd, you found
that o = 69 MPa and ky = 0.8 MPa.m/2.
Find the expected yield stress in MPa when the grain size is
1um. Do NOT include any units.
Do NOT round off any values until your final answer. Give your answer to
the nearest whole number.
Answer:
869
The correct answer is: 869
Stress (MPa)
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