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Question 4 10 pts Find the maximum stress a part made of Low alloy steel, AISI 4140 normalized, can withstand if R=-1 and a life of minimum $10^7$ cycles is required, Give your answer in MPa with no decimal places. Fatigue strength model (stress amplitude) (MPa) 100 1000 10000 100000 1e6 1e7 1e8 Number of Cycles Stress Ratio=-1

          Question 4
10 pts
Find the maximum stress a part made of Low alloy steel, AISI 4140 normalized, can withstand if R=-1 and a life of minimum $10^7$ cycles is required, Give your answer
in MPa with no decimal places.
Fatigue strength model (stress amplitude) (MPa)
100
1000
10000
100000
1e6
1e7
1e8
Number of Cycles
Stress Ratio=-1

Question 4
10 pts
Find the maximum stress a part made of Low alloy steel, AISI 4140 normalized, can withstand if R=-1 and a life of minimum 10^7 cycles is required, Give your answer
in MPa with no decimal places.
Fatigue strength model (stress amplitude) (MPa)
100
1000
10000
100000
1e6
1e7
1e8
Number of Cycles
Stress Ratio=-1

Added by Douglas E.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Geeta Yadav

Step 1

From the given data, we can see that the fatigue strength at 10^6 cycles is 400 MPa. We need to find the fatigue strength at 10^7 cycles. To do this, we can use the fatigue strength model (stress amplitude) equation: log(S-N) = log(a) - b * log(N) where S-N is Show more…

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Find the maximum stress a part made of Low alloy steel, AISI 4140 normalized, can withstand if R=-1 and a life of minimum 10^7 cycles is required. Give your answer in MPa with no decimal places. 00 800 Fatigue strength model (stress amplitude) (MPa) 60 400 100 1000 10000 100000 Number of Cycles Stress Ratio = -1 10^6