hows the values of stress amplitud Fatigue strength Sf (Mpa) 474 417

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Q1/ The table below shows the values of stress amplitude and life cycles :
Fatigue strength Sf (Mpa)
Number of cycles (Nf)
474
111
417
496
352
3002
316
7065
290
21930
262
66075
The test were done, to estimate the failure, on un-notched axially load specimens under zero mean stress.
Calculate a and b using the stress -life equation.
Transcribed Image Text:Q1/ The table below shows the values of stress amplitude and life cycles : Fatigue strength Sf (Mpa) Number of cycles (Nf) 474 111 417 496 352 3002 316 7065 290 21930 262 66075 The test were done, to estimate the failure, on un-notched axially load specimens under zero mean stress. Calculate a and b using the stress -life equation.
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