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Fatigue Failure and Cyclic Loading Quiz

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Questions and Answers

How does stress range (S) affect fatigue life (N)?

A higher stress range results in a longer fatigue life

Stress range only affects the frequency of loading

A higher stress range results in a shorter fatigue life (correct)

Stress range does not affect fatigue life

What is the definition of fatigue life?

The frequency of loading (1/p)

The number of cycles (N) to failure (correct)

The ultimate stress level before failure

The stress range (S) at which failure occurs

What are S/N curves used to represent?

Yield strength vs. stress range (S)

Stress range (S) vs. fatigue life (N) (correct)

Ultimate stress level vs. frequency of loading

Frequency of loading (1/p) vs. stress range (S)

What is the fatigue endurance limit?

Below this stress level, the fatigue life is infinite Signup and view all the answers

What does the fatigue performance of materials depend on?

Stress range (S) rather than the individual maximum or minimum stress Signup and view all the answers

What is the relationship between fatigue life (N) and stress range (S) according to the text?

N increases with decreasing S Signup and view all the answers

How is fatigue life (N) defined in the context of cyclic loading?

Number of cycles to failure Signup and view all the answers

What does the fatigue endurance limit represent?

Stress level below which fatigue life is infinite Signup and view all the answers

How are the fatigue performance of materials typically represented?

S/N curves Signup and view all the answers

What characteristic describes fatigue failure in the context of cyclic loading?

Sudden and brittle Signup and view all the answers