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What is factor of safety? Discuss various factors to be considered while selecting the factor of safety. Suggest various values for different type of loads and materials.
written 6.9 years ago by gravatar for bhaveshkumarn.pasi bhaveshkumarn.pasi • 510 •   modified 6.7 years ago

Subject: Machine Design -I

Topic: Machine Design consideration

Difficulty: Medium
machine design
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written 6.7 years ago by gravatar for bhaveshkumarn.pasi bhaveshkumarn.pasi • 510

Factor of safety: It is defined as the ratio of the maximum stress to the working stress.

FOS for Ductile and Brittle material

Factors to be considered while selecting the factor of safety:

  • The properties of the material and the possible change of these properties during operation.
  • Type of applied load, whether it is Gradual or Impact.
  • Initial stresses set up during manufacturing of component.
  • The extent of localised stresses.
  • Mode of failure

Values of factor of safety:

Values of factor of safety
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