Problem 1 The fatigue data for a brass alloy are given as follows : Stress amp, 170 148 130 114 92 80 74 S(MPa) Cycle to failure (N) 3.7x10* 1.0x105 3.0x105 1.0x106 1.0x107 1.0x10 1.0x10° a) Make an S-N plot of the data. b) Select S-N curve, select add trendline and in trendline options click power and display equation on the chart. c) Determine the material constants A and B by fitting this plot to the equation S=AN°. d) Determine the Fatigue life for 120 MPa. e) Determine the fatigue limit or Fatigue strength whichever is applicable for this metal.
Problem 1 The fatigue data for a brass alloy are given as follows : Stress amp, 170 148 130 114 92 80 74 S(MPa) Cycle to failure (N) 3.7x10* 1.0x105 3.0x105 1.0x106 1.0x107 1.0x10 1.0x10° a) Make an S-N plot of the data. b) Select S-N curve, select add trendline and in trendline options click power and display equation on the chart. c) Determine the material constants A and B by fitting this plot to the equation S=AN°. d) Determine the Fatigue life for 120 MPa. e) Determine the fatigue limit or Fatigue strength whichever is applicable for this metal.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Problem 1
The fatigue data for a brass alloy are given as follows :
Stress amp,
170
148
130
114
92
80
74
S(MPa)
Cycle to
failure (N)
3.7x104
1.0x105
3.0x105
1.0x106
1.0x107
1.0x108
1.0x10°
a) Make an S-N plot of the data.
b) Select S-N curve, select add trendline and in trendline options click power and display
equation on the chart.
c) Determine the material constants A and B by fitting this plot to the equation S=AN.
d) Determine the Fatigue life for 120 MPa.
e) Determine the fatigue limit or Fatigue strength whichever is applicable for this metal.
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