QI/ The table below shows the values of stress amplitude and life cycles : Fatigue strength SE (Mpa) Number of cycles (Nf) 474 417 111 496 352 3002 316 290 7065 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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Chapter1: Units, Trigonometry. And Vectors
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QI/ 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
290
7065
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:QI/ 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 316 290 7065 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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