The following creep curve is derived from an aluminum alloy tested at 380℃ with a constant stress of 2.50 MPa. Identify in the illustration the 3 stages of creep. Determine the steady-state creep rate and the rupture lifetime.

The following creep curve is derived from an aluminum alloy tested at 380℃ with a constant stress of 2.50 MPa. Identify in the illustration the 3 stages of creep. Determine the steady-state creep rate and the rupture lifetime.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter7: Analysis Of Stress And Strain

Section: Chapter Questions

Problem 7.7.1P: An element of material in plain strain has the following strains: x = 0.001 and y = 0.0015. (a)...

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Question

The following creep curve is derived from an aluminum alloy tested at 380℃ with a constant stress of 2.50 MPa.

Identify in the illustration the 3 stages of creep.
Determine the steady-state creep rate and the rupture lifetime.

Creep strain (e)
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
5
10
15
20
Time (h)
25
30
35
40

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