A forged part has an ultimate stress of Su = 150 ksi and is under a fatigue load of Sp = 98 ksi. It has a 4.1 inch diameter and is under a repetitive bending load. Calculate the number of cycles until failure Nf if the probability of survival is 90%. Ultimate strength in tension, S, ksi 60 1.0 80 100 120 140 160 180 200 220 240 Polished Ground 0.8 Machined or cold drawn
A forged part has an ultimate stress of Su = 150 ksi and is under a fatigue load of Sp = 98 ksi. It has a 4.1 inch diameter and is under a repetitive bending load. Calculate the number of cycles until failure Nf if the probability of survival is 90%. Ultimate strength in tension, S, ksi 60 1.0 80 100 120 140 160 180 200 220 240 Polished Ground 0.8 Machined or cold drawn
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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Solve within 20 minutes. Solve correctly and short explanation.
![A forged part has an ultimate stress of Su = 150 ksi and is under a
fatigue load of Sf = 98 ksi. It has a 4.1 inch diameter and is under a
repetitive bending load. Calculate the number of cycles until failure
N if the probability of survival is 90%.
Ultimate strength in tension, S, ksi
60
1.0
80 100
120
140
160
180
200
220
240
Polished
Ground
0.8
Machined or cold drawn
0.6
Hot rolled
0.4
As forged
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Ultimate strength in tension, S, GPa
Surface finish factor, k](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3d2246e8-ed7f-4b9b-b1d1-251c079bac4d%2F6cc5e8c8-1b22-4258-b30d-fa8133980d6e%2Ff3z8ck_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A forged part has an ultimate stress of Su = 150 ksi and is under a
fatigue load of Sf = 98 ksi. It has a 4.1 inch diameter and is under a
repetitive bending load. Calculate the number of cycles until failure
N if the probability of survival is 90%.
Ultimate strength in tension, S, ksi
60
1.0
80 100
120
140
160
180
200
220
240
Polished
Ground
0.8
Machined or cold drawn
0.6
Hot rolled
0.4
As forged
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Ultimate strength in tension, S, GPa
Surface finish factor, k
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