Part a and B please Table 4 shows the fatigue data of a ductile cast iron to be used for an automobile axle thatrotates at an average rotational speed of 750 revolutions per minute:Table 4: Fatigue data of a ductile cast ironStress Amplitude(МPа)Cycles toFailure1X 1053 X 1052482361X 1063 X 1061X 107ЗX 102242132011931931X 1081933 X 108a) Make an S-N plot (stress amplitude versus logarithm cycles to failure).b) What is the fatigue limit for this alloy?c) Determine the fatigue lifetimes at stress amplitudes of 230 MPa and 175 MPa?d) Discuss your results.

a) The SN curve for the given data can be drawn as: The above given is the SN graph for given…

Table 4: Fatigue data of a ductile cast iron Stress Amplitude Cycles to Failure 1X 105 (MPa) 248 236 3 X 105 224 1X 106 213 ЗX 106 201 1X 107 ЗX 107 1X 108 3 X 10 193 193 193 a) Make an S-N plot (stress amplitude versus logarithm cycles to failure). b) What is the fatigue limit for this alloy?

Table 4: Fatigue data of a ductile cast iron Stress Amplitude Cycles to Failure 1X 105 (MPa) 248 236 3 X 105 224 1X 106 213 ЗX 106 201 1X 107 ЗX 107 1X 108 3 X 10 193 193 193 a) Make an S-N plot (stress amplitude versus logarithm cycles to failure). b) What is the fatigue limit for this alloy?

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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Question

Part a and B please

Table 4 shows the fatigue data of a ductile cast iron to be used for an automobile axle that
rotates at an average rotational speed of 750 revolutions per minute:
Table 4: Fatigue data of a ductile cast iron
Stress Amplitude
(МPа)
Cycles to
Failure
1X 105
3 X 105
248
236
1X 106
3 X 106
1X 107
ЗX 10
224
213
201
193
193
1X 108
193
3 X 108
a) Make an S-N plot (stress amplitude versus logarithm cycles to failure).
b) What is the fatigue limit for this alloy?
c) Determine the fatigue lifetimes at stress amplitudes of 230 MPa and 175 MPa?
d) Discuss your results.

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