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Stress concentration factor is ratio of
- a)endurance limit without stress concentration to endurance limit with stress concentration
- b)endurance limit with stress concentration to endurance limit without stress concentration
- c)endurance limit with stress concentration to factor of safety
- d)none of these
Correct answer is option 'A'. Can you explain this answer?
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Stress concentration factor is ratio ofa)endurance limit without stres...
Fatigue stress concentration factor can be defined as the ratio of endurance limit without stress concentration to the endurance limit with stress concetration.
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Stress concentration factor is ratio ofa)endurance limit without stres...
Stress concentration factor (Kt) is a dimensionless factor that relates the maximum stress in a structural component to the nominal stress. It can be defined as the ratio of the maximum stress at a point of stress concentration to the nominal stress.
Formula: Kt = σmax / σnominal
The stress concentration factor is an important factor in the design of mechanical components as it helps to predict the failure of a component due to stress concentration. The value of stress concentration factor varies with the shape and size of the component, and the type of loading applied.
Endurance Limit: The endurance limit is the maximum stress that a material can withstand for an infinite number of cycles without failing. It is also called the fatigue limit.
Factors affecting endurance limit:
- Material properties
- Surface finish
- Loading conditions
- Environmental conditions
- Size and shape of the component
Explanation of Option A:
Option A states that stress concentration factor is the ratio of endurance limit without stress concentration to endurance limit with stress concentration. This means that the endurance limit of a component without stress concentration is divided by the endurance limit of a component with stress concentration to get the stress concentration factor.
Example:
Let us consider a component that has an endurance limit of 50 MPa without any stress concentration. If the same component has a stress concentration factor of 2, then the endurance limit with stress concentration would be 50/2 = 25 MPa.
Hence, the correct answer is option A.
Formula: Kt = σmax / σnominal
The stress concentration factor is an important factor in the design of mechanical components as it helps to predict the failure of a component due to stress concentration. The value of stress concentration factor varies with the shape and size of the component, and the type of loading applied.
Endurance Limit: The endurance limit is the maximum stress that a material can withstand for an infinite number of cycles without failing. It is also called the fatigue limit.
Factors affecting endurance limit:
- Material properties
- Surface finish
- Loading conditions
- Environmental conditions
- Size and shape of the component
Explanation of Option A:
Option A states that stress concentration factor is the ratio of endurance limit without stress concentration to endurance limit with stress concentration. This means that the endurance limit of a component without stress concentration is divided by the endurance limit of a component with stress concentration to get the stress concentration factor.
Example:
Let us consider a component that has an endurance limit of 50 MPa without any stress concentration. If the same component has a stress concentration factor of 2, then the endurance limit with stress concentration would be 50/2 = 25 MPa.
Hence, the correct answer is option A.
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Stress concentration factor is ratio ofa)endurance limit without stress concentration to endurance limit with stress concentrationb)endurance limit with stress concentration to endurance limit without stress concentrationc)endurance limit with stress concentration to factor of safetyd)none of theseCorrect answer is option 'A'. Can you explain this answer?
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