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Consider the following statements:
1. Endurance strength of a component is not affected by its surface finish and notch sensitivity of the material.
2. For ferrous materials like steel, S-N curve becomes asymptotic at 106 cycles.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements: 1. Endurance strength of a c...
1 is false: affected
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Consider the following statements: 1. Endurance strength of a c...
Explanation:
1. Endurance strength of a component is not affected by its surface finish and notch sensitivity of the material:
- The statement is incorrect. The endurance strength of a component can be significantly affected by its surface finish and the material's notch sensitivity.
- Surface finish can introduce stress concentrations, which can lead to premature failure of a component.
- Notch sensitivity refers to how susceptible a material is to stress concentration effects, with highly sensitive materials experiencing a greater decrease in endurance strength.
2. For ferrous materials like steel, S-N curve becomes asymptotic at 10^6 cycles:
- The statement is correct. In the case of ferrous materials like steel, the S-N curve typically becomes asymptotic at around 10^6 cycles.
- This means that beyond this point, the material experiences a much lower rate of decrease in endurance strength with increasing cycles, indicating a higher fatigue life.
Therefore, the correct answer is option B - 2 only.
1. Endurance strength of a component is not affected by its surface finish and notch sensitivity of the material:
- The statement is incorrect. The endurance strength of a component can be significantly affected by its surface finish and the material's notch sensitivity.
- Surface finish can introduce stress concentrations, which can lead to premature failure of a component.
- Notch sensitivity refers to how susceptible a material is to stress concentration effects, with highly sensitive materials experiencing a greater decrease in endurance strength.
2. For ferrous materials like steel, S-N curve becomes asymptotic at 10^6 cycles:
- The statement is correct. In the case of ferrous materials like steel, the S-N curve typically becomes asymptotic at around 10^6 cycles.
- This means that beyond this point, the material experiences a much lower rate of decrease in endurance strength with increasing cycles, indicating a higher fatigue life.
Therefore, the correct answer is option B - 2 only.
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Consider the following statements: 1. Endurance strength of a component is not affected by its surface finish and notch sensitivity of the material.2. For ferrous materials like steel, S-N curve becomes asymptotic at 106 cycles.Which of the statements given above is/are correct?a)1 only b)2 only c)Both 1 and 2 d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?
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