Mechanical Engineering Exam > Mechanical Engineering Questions > The main objective of ‘shot peening&rsq...
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The main objective of ‘shot peening’ is to improve which property of metal parts
- a)Surface finish
- b)Ductility
- c)Fatigue strength
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
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The main objective of ‘shot peening’ is to improve which p...
Shot peening is a process specifically designed to enhance the fatigue strength of components which are subjected to high alternating stress. In shot peening, small spherical shots bombards the surface of the part to be finished.
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The main objective of ‘shot peening’ is to improve which p...
Explanation:
Surface Finish:
Shot peening is a process used to improve the fatigue strength of metal parts, not the surface finish. Although shot peening can also have some effects on the surface finish of the parts, its primary objective is to enhance other properties.
Ductility:
Shot peening does not primarily aim to improve the ductility of metal parts. Ductility is the ability of a material to deform plastically before fracturing, and shot peening does not directly influence this property.
Fatigue Strength:
The main objective of shot peening is to improve the fatigue strength of metal parts. Fatigue strength is the ability of a material to resist fatigue failure when subjected to cyclic loading. Shot peening induces compressive residual stresses on the surface of the part, which helps to increase its fatigue strength by preventing crack initiation and propagation.
Conclusion:
In conclusion, the correct answer is option C - fatigue strength. Shot peening is a surface treatment process that is specifically designed to enhance the fatigue strength of metal parts by introducing compressive residual stresses on their surfaces.
Surface Finish:
Shot peening is a process used to improve the fatigue strength of metal parts, not the surface finish. Although shot peening can also have some effects on the surface finish of the parts, its primary objective is to enhance other properties.
Ductility:
Shot peening does not primarily aim to improve the ductility of metal parts. Ductility is the ability of a material to deform plastically before fracturing, and shot peening does not directly influence this property.
Fatigue Strength:
The main objective of shot peening is to improve the fatigue strength of metal parts. Fatigue strength is the ability of a material to resist fatigue failure when subjected to cyclic loading. Shot peening induces compressive residual stresses on the surface of the part, which helps to increase its fatigue strength by preventing crack initiation and propagation.
Conclusion:
In conclusion, the correct answer is option C - fatigue strength. Shot peening is a surface treatment process that is specifically designed to enhance the fatigue strength of metal parts by introducing compressive residual stresses on their surfaces.
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The main objective of ‘shot peening’ is to improve which property of metal partsa)Surface finishb)Ductilityc)Fatigue strengthd)None of the aboveCorrect answer is option 'C'. Can you explain this answer?
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