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The fatigue limit of steel is around ____ times the ultimate tensile strength.(a) 0.3(b) 5(c) 3(d) 0.5This question was posed to me by my college director while I was bunking the class.This interesting question is from Aircraft Materials topic in division Testing Aircraft Materials of Aerospace Materials & Processes

Answer»

Correct choice is (d) 0.5

To elaborate: The fatigue limit is different for different MATERIALS. For the MATERIAL steel, the fatigue limit is around 0.5 of its ultimate TENSILE strength. For materials that are non-ferrous in NATURE, the fatigue limit can 0.3 or 0.4 of its ultimate tensile strength.



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