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There is a rotating bar made up of steel (Sut = 650 MPA. which is subjected to a completely reversed bending stress. The corrected endurance limit of the bar is 300 MPa. The fatigue strength of the bar for a life of 1,00,000 cycles will be _____ MPa
Correct answer is between '465,470'. Can you explain this answer?
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There is a rotating bar made up of steel (Sut= 650 MPA. which is subje...
Given:
Sut = 650 MPa
Corrected endurance limit , Se = 300 MPa
N = 1,00,000 cycles
We will draw the S-N diagram for it:
log10(0.9Sut) = log10(585) = 2.7672
log10(Se) = log10(300) = 2.4771
log10(N) = log10(100000) = 5
Fatigue strength for 1,00,000 cycles:
Equation of line AB:
Therefore the fatigue strength of the bar will be 468.274 MPa.
Sut = 650 MPa
Corrected endurance limit , Se = 300 MPa
N = 1,00,000 cycles
We will draw the S-N diagram for it:
log10(0.9Sut) = log10(585) = 2.7672
log10(Se) = log10(300) = 2.4771
log10(N) = log10(100000) = 5
Fatigue strength for 1,00,000 cycles:
Equation of line AB:
Therefore the fatigue strength of the bar will be 468.274 MPa.
Most Upvoted Answer
There is a rotating bar made up of steel (Sut= 650 MPA. which is subje...
Calculation of Fatigue Strength of Rotating Bar
Given:
Formula:
where,
Calculation:
Answer: The fatigue strength of the rotating bar for a life of 1,00,000 cycles is approximately 465.77 MPa.
Given:
- Steel used in the bar: Sut= 650 MPa
- Completely reversed bending stress
- Corrected endurance limit of the bar: 300 MPa
- Number of cycles: 1,00,000 cycles
Formula:
- SN curve: Sf = Se (1+a(Nf)^b)
where,
- Sf is the fatigue strength
- Se is the corrected endurance limit
- a and b are material constants
- Nf is the number of cycles
Calculation:
- From the given data, Se = 300 MPa
- For steel, a = -0.085 and b = -0.475
- Substituting the values in the SN curve formula, we get:
- Sf = 300 (1 - 0.085(1,00,000)^-0.475)
- Sf = 465.77 MPa (approx)
Answer: The fatigue strength of the rotating bar for a life of 1,00,000 cycles is approximately 465.77 MPa.
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There is a rotating bar made up of steel (Sut= 650 MPA. which is subjected to a completely reversed bending stress. The corrected endurance limit of the bar is 300 MPa. The fatigue strength of the bar for a life of 1,00,000 cycles will be _____ MPaCorrect answer is between '465,470'. Can you explain this answer?
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There is a rotating bar made up of steel (Sut= 650 MPA. which is subjected to a completely reversed bending stress. The corrected endurance limit of the bar is 300 MPa. The fatigue strength of the bar for a life of 1,00,000 cycles will be _____ MPaCorrect answer is between '465,470'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about There is a rotating bar made up of steel (Sut= 650 MPA. which is subjected to a completely reversed bending stress. The corrected endurance limit of the bar is 300 MPa. The fatigue strength of the bar for a life of 1,00,000 cycles will be _____ MPaCorrect answer is between '465,470'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for There is a rotating bar made up of steel (Sut= 650 MPA. which is subjected to a completely reversed bending stress. The corrected endurance limit of the bar is 300 MPa. The fatigue strength of the bar for a life of 1,00,000 cycles will be _____ MPaCorrect answer is between '465,470'. Can you explain this answer?.
There is a rotating bar made up of steel (Sut= 650 MPA. which is subjected to a completely reversed bending stress. The corrected endurance limit of the bar is 300 MPa. The fatigue strength of the bar for a life of 1,00,000 cycles will be _____ MPaCorrect answer is between '465,470'. Can you explain this answer? for GATE 2024 is part of GATE preparation. The Question and answers have been prepared according to the GATE exam syllabus. Information about There is a rotating bar made up of steel (Sut= 650 MPA. which is subjected to a completely reversed bending stress. The corrected endurance limit of the bar is 300 MPa. The fatigue strength of the bar for a life of 1,00,000 cycles will be _____ MPaCorrect answer is between '465,470'. Can you explain this answer? covers all topics & solutions for GATE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for There is a rotating bar made up of steel (Sut= 650 MPA. which is subjected to a completely reversed bending stress. The corrected endurance limit of the bar is 300 MPa. The fatigue strength of the bar for a life of 1,00,000 cycles will be _____ MPaCorrect answer is between '465,470'. Can you explain this answer?.
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