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Endurance limit of a beam subjected to pure bending decreases with
- a)increase in the surface roughness and increase in the size of the beam
- b)decrease in the surface roughness and decrease in the size of the beam
- c)decrease in the surface roughness and increase in the size of the beam
- d)increase in the surface roughness and decrease in the size of the beam
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Endurance limit of a beam subjected to pure bending decreases witha)in...
Form above formula it is clear that the Endurance limit increases with increase in size, surface, load, temp and endurance strength.
Most Upvoted Answer
Endurance limit of a beam subjected to pure bending decreases witha)in...
Explanation:
The endurance limit of a beam is the maximum stress that the beam can withstand without undergoing fatigue failure. The following factors affect the endurance limit of a beam subjected to pure bending:
Surface Roughness:
- The surface roughness of a beam refers to the irregularities on the surface of the beam.
- If the surface roughness of a beam is high, then the stress concentration at the irregularities will be high.
- This will lead to the initiation and propagation of cracks, which will reduce the endurance limit of the beam.
- Therefore, an increase in surface roughness will decrease the endurance limit of a beam.
Size of the Beam:
- The size of a beam refers to its cross-sectional dimensions.
- If the size of the beam is large, then the stress concentration at the neutral axis will be low.
- This will lead to a decrease in the initiation and propagation of cracks, which will increase the endurance limit of the beam.
- Therefore, an increase in the size of the beam will increase the endurance limit of a beam.
Conclusion:
- The endurance limit of a beam subjected to pure bending decreases with an increase in the surface roughness and an increase in the size of the beam.
- Therefore, option 'A' is the correct answer.
The endurance limit of a beam is the maximum stress that the beam can withstand without undergoing fatigue failure. The following factors affect the endurance limit of a beam subjected to pure bending:
Surface Roughness:
- The surface roughness of a beam refers to the irregularities on the surface of the beam.
- If the surface roughness of a beam is high, then the stress concentration at the irregularities will be high.
- This will lead to the initiation and propagation of cracks, which will reduce the endurance limit of the beam.
- Therefore, an increase in surface roughness will decrease the endurance limit of a beam.
Size of the Beam:
- The size of a beam refers to its cross-sectional dimensions.
- If the size of the beam is large, then the stress concentration at the neutral axis will be low.
- This will lead to a decrease in the initiation and propagation of cracks, which will increase the endurance limit of the beam.
- Therefore, an increase in the size of the beam will increase the endurance limit of a beam.
Conclusion:
- The endurance limit of a beam subjected to pure bending decreases with an increase in the surface roughness and an increase in the size of the beam.
- Therefore, option 'A' is the correct answer.
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Endurance limit of a beam subjected to pure bending decreases witha)increase in the surface roughness and increase in the size of the beamb)decrease in the surface roughness and decrease in the size of the beamc)decrease in the surface roughness and increase in the size of the beamd)increase in the surface roughness and decrease in the size of the beamCorrect answer is option 'A'. Can you explain this answer?
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Endurance limit of a beam subjected to pure bending decreases witha)increase in the surface roughness and increase in the size of the beamb)decrease in the surface roughness and decrease in the size of the beamc)decrease in the surface roughness and increase in the size of the beamd)increase in the surface roughness and decrease in the size of the beamCorrect answer is option 'A'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Endurance limit of a beam subjected to pure bending decreases witha)increase in the surface roughness and increase in the size of the beamb)decrease in the surface roughness and decrease in the size of the beamc)decrease in the surface roughness and increase in the size of the beamd)increase in the surface roughness and decrease in the size of the beamCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Endurance limit of a beam subjected to pure bending decreases witha)increase in the surface roughness and increase in the size of the beamb)decrease in the surface roughness and decrease in the size of the beamc)decrease in the surface roughness and increase in the size of the beamd)increase in the surface roughness and decrease in the size of the beamCorrect answer is option 'A'. Can you explain this answer?.
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