Fatigue failure of a material may occur, when it is subjected to _____________ stress?
Correct answer: A. Fluctuating
- A. Fluctuating
- B. Tensile
- C. Compressive
- D. Torsion
Explanation
Fatigue results from repeated or fluctuating stresses, even when each individual stress is below the material's ultimate strength. A steady tensile or compressive stress alone does not normally produce fatigue failure.
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