If the yield stress in part c is considered failure stress, what is the maximum working stress to be applied to this material if a factor of safety of 1.5 is used?

Materials Science And Engineering Properties
1st Edition
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Charles Gilmore
Chapter9: Time, Temperature, And Mechanical Properties
Section: Chapter Questions
Problem 9.3P
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If the yield stress in part c is considered failure stress, what is the maximum
working stress to be applied to this material if a factor of safety of 1.5 is used?

 

1.14 The stress-strain relation shown in Figure P1.14 was obtained during the ten-
sile test of an aluminum alloy specimen.
60,000
* 40,000
n 20,000
0.
0.002
0.004
0.006
0.008
Strain, in./in.
FIGURE P1.14
Determine the following:
a. Young's modulus within the linear portion
b. Tangent modulus at a stress of 45,000 psi
c. Yield stress using an offset of 0.002 strain
d. If the yield stress in part c is considered failure stress, what is the maximum
working stress to be applied to this material if a factor of safety of 1.5 is used?
Transcribed Image Text:1.14 The stress-strain relation shown in Figure P1.14 was obtained during the ten- sile test of an aluminum alloy specimen. 60,000 * 40,000 n 20,000 0. 0.002 0.004 0.006 0.008 Strain, in./in. FIGURE P1.14 Determine the following: a. Young's modulus within the linear portion b. Tangent modulus at a stress of 45,000 psi c. Yield stress using an offset of 0.002 strain d. If the yield stress in part c is considered failure stress, what is the maximum working stress to be applied to this material if a factor of safety of 1.5 is used?
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