Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 11, Problem 28CQ
To determine
Whether it is safe to assume that a part could withstand an infinite number of stress applications that are of only
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Task (3)
you are asked to perform tensile test on specimens of two different materials (A and B) and you obtained the
stress-strain diagram of the two specimens as shown in Figure 2:
400
350
300
250
Material A
200
150
100
50
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.16
0.18
Strain (mm/mm)
50
Material B
30
20
10
0.02
0.04
0.06
0.08
0.1
Strain (mm/mm)
Figure 2: Tensile Test Analysis
Stress (MPa)
Stress (MPa)
A 7075-T651 alloy is used in a structural component in an airplane. The component must
not fail when subjected to a stress of 250 MPa. Several surface flaws have been detected on the
component. What is the largest (deepest) surface flaw that could be permitted with the 250
MPa maximum stress? Use data from Table 1 and assume this component geometry and loading
condition result in a Y value of 1.25.
Yield Strength
KI
Material
MPa
ksi
MPa√m
ksiVin.
Metals
Aluminum alloy (7075-T651)
495
72
24
22
After an inspection it is found that a structural ceramic part has no flaws greater than 100 micrometers in size, calculate the maximum service stress (in MPa) available with SiC. Assume that Y= 1
Chapter 11 Solutions
Materials Science And Engineering Properties
Ch. 11 - Prob. 1CQCh. 11 - Prob. 2CQCh. 11 - Prob. 3CQCh. 11 - Prob. 4CQCh. 11 - Prob. 5CQCh. 11 - Prob. 6CQCh. 11 - Prob. 7CQCh. 11 - Prob. 8CQCh. 11 - Prob. 9CQCh. 11 - Prob. 10CQ
Ch. 11 - Prob. 11CQCh. 11 - Prob. 12CQCh. 11 - Prob. 13CQCh. 11 - Prob. 14CQCh. 11 - Prob. 15CQCh. 11 - Prob. 16CQCh. 11 - Prob. 17CQCh. 11 - Prob. 18CQCh. 11 - Prob. 19CQCh. 11 - Prob. 20CQCh. 11 - Prob. 21CQCh. 11 - Prob. 22CQCh. 11 - Prob. 23CQCh. 11 - Prob. 24CQCh. 11 - Prob. 25CQCh. 11 - Prob. 26CQCh. 11 - Prob. 27CQCh. 11 - Prob. 28CQCh. 11 - Prob. 29CQCh. 11 - Prob. 30CQCh. 11 - Prob. 1ETSQCh. 11 - Prob. 2ETSQCh. 11 - Prob. 3ETSQCh. 11 - Prob. 4ETSQCh. 11 - Prob. 5ETSQCh. 11 - Prob. 6ETSQCh. 11 - Prob. 7ETSQCh. 11 - Prob. 8ETSQCh. 11 - Prob. 9ETSQCh. 11 - Prob. 10ETSQCh. 11 - Prob. 11.1PCh. 11 - Prob. 11.2PCh. 11 - Prob. 11.3PCh. 11 - Prob. 11.4PCh. 11 - Prob. 11.5PCh. 11 - Prob. 11.6PCh. 11 - Prob. 11.7PCh. 11 - Prob. 11.8PCh. 11 - Prob. 11.9PCh. 11 - Prob. 11.10PCh. 11 - Prob. 11.11PCh. 11 - Prob. 11.12PCh. 11 - Prob. 11.13PCh. 11 - Prob. 11.14P
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