316 SS underwent fatigue testing to produce the following S-N curve. a.If the material is cyclically loaded at 200 MPa, what is its expected lifebased off the graph below? b. (please see attachment for fatigue constants) If the material is cyclically loaded at 200MPa, based on these material constants what is its expected life?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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316 SS underwent fatigue testing to produce the following S-N curve.

a.If the material is cyclically loaded at 200 MPa, what is its expected lifebased off the graph below?

b. (please see attachment for fatigue constants) If the material is cyclically loaded at 200MPa, based on these material constants what is its expected life?

b. The fatigue constants were found to be:
of = 952MPA
%3D
b = -0.1112
Transcribed Image Text:b. The fatigue constants were found to be: of = 952MPA %3D b = -0.1112
400
350
300
250
-y= ax®
200
150
100
50
1.00E+03
1.00E+04
1.00E+05
1.00E+06
1.00E+07
1.00E+08
Reversal to Failure, 2Nr
Stress Amplitude, Ga (MPa)
Transcribed Image Text:400 350 300 250 -y= ax® 200 150 100 50 1.00E+03 1.00E+04 1.00E+05 1.00E+06 1.00E+07 1.00E+08 Reversal to Failure, 2Nr Stress Amplitude, Ga (MPa)
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