Related Questions

Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the
A Ultimate tensile strength (U.T.S.)
B Endurance limit
C Elastic limit
D None of these
Fatigue resistance of a material is measured by the
A Elastic limit
B Ultimate tensile strength
C Young's modulus
D Endurance limit
Resistance to fatigue of a material is measured by
A Young's modulus
B Coefficient of elasticity
C Elastic limit
D Endurance limit
The yield point in fatigue loading compared to that in static loading is less. The ratio of ultimate tensile strength to endurance limit of a material subjected to fatigue loading is
A 0.5
B 1
C 1.5
D 2
Fatigue limit improvement by over stressing the metal by successively increasing the load is called coaxing. In fatigue failure, the material fails
A Below the yield point
B Above the yield point
C Below the elastic limit
D At the elastic limit
Endurance is a measure of fatigue limit of a metal. Fatigue crack in nitrided machine parts originates
A At the surface
B Within the core
C Just below the surface
D Anywhere on the surface
The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as
A Hot piercing
B Extrusion
C Cold peening
D Cold heading
Which of the following is not a characteristic observed in material failure by fatigue fracture ?
A Plastic deformation of material does not occur
B Initiation of crack from below the surface does not occur
C Initation of crack occurs on the surface of the machine part
D Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface
Failure of a material is called fatigue when it fails
A At the elastic limit
B Below the elastic limit
C At the yield point
D Below the yield point
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is
A 0.20
B 0.35
C 0.50
D 0.65

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