Question
Endurance limit of a beam subjected to pure bending decreases with
Options :
Endurance limit of a beam subjected to pure bending decreases with
decrease in the surface roughness and decrease in the size of the beam
decrease in the surface roughness and increase in the size of the beam
increase in the surface roughness and decrease in the size of the beam
Answer :
Endurance limit of a beam subjected to pure bending decreases with
Solution :
Formula for endurance limit σe = Ka: × Kb × Kc × Kd× σ'e
Where
Ka − Size factor
Kb − Surface factor
Kc − load factor
Kd= − Temperature factor
σ'e > − Endurance Strength
Form above formula it is clear that the Endurance limit increases with increase in size, surface, load, temp and endurance strength.
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