Q-3 The following creep data were taken on an aluminum alloy at 400°C (750°F) and a constant stress of 25 MPa (3660 psi). Plot the data as strain versus time, then determine the steady-state or minimum creep rate.

Q-3 The following creep data were taken on an aluminum alloy at 400°C (750°F) and a constant stress of 25 MPa (3660 psi). Plot the data as strain versus time, then determine the steady-state or minimum creep rate.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

Q-3 The following creep data were taken on an aluminum alloy at 400°C (750°F)
and a constant stress of 25 MPa (3660 psi). Plot the data as strain versus time, then
determine the steady-state or minimum creep rate.
Time
(min)
Time
Strain
(min)
Strain
0.00
18
0.82
2
0.22
20
0.88
22
24
4
0.34
0.95
6
0.41
1.03
8
0.48
26
1.12
10
0.55
28
1.22
12
0.62
30
1.36
14
0.68
32
1.53
16
0.75
34
1.77

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