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Q: Which of the following categories of strength denotes the stress below which a material will not fall regardless of the number of cycles?
  • A. Tensile strength
  • B. Ultimate strength
  • C. Compressive strength
  • D. Fatigue limit
Correct Answer: Option D - Fatigue test– It is a known phenomenon that metals, in general, cannot withstand cyclic time. The type of failure occurring under these circumstances is called fatigue failure. • It is found that a limiting stress level exists below web material will not fail regardless of the number of cycles. This limiting stress is called fatigue /endurance.
D. Fatigue test– It is a known phenomenon that metals, in general, cannot withstand cyclic time. The type of failure occurring under these circumstances is called fatigue failure. • It is found that a limiting stress level exists below web material will not fail regardless of the number of cycles. This limiting stress is called fatigue /endurance.

Explanations:

Fatigue test– It is a known phenomenon that metals, in general, cannot withstand cyclic time. The type of failure occurring under these circumstances is called fatigue failure. • It is found that a limiting stress level exists below web material will not fail regardless of the number of cycles. This limiting stress is called fatigue /endurance.