What is the advantage of nitriding? Select all correct answers. Some complex components can be nitride without difficulty. Better wear resistance. Better fatigue resistance. The cheapest method of case hardening.
Design Against Fluctuating Loads
Machine elements are subjected to varieties of loads, some components are subjected to static loads, while some machine components are subjected to fluctuating loads, whose load magnitude tends to fluctuate. The components of a machine, when rotating at a high speed, are subjected to a high degree of load, which fluctuates from a high value to a low value. For the machine elements under the action of static loads, static failure theories are applied to know the safe and hazardous working conditions and regions. However, most of the machine elements are subjected to variable or fluctuating stresses, due to the nature of load that fluctuates from high magnitude to low magnitude. Also, the nature of the loads is repetitive. For instance, shafts, bearings, cams and followers, and so on.
Design Against Fluctuating Load
Stress is defined as force per unit area. When there is localization of huge stresses in mechanical components, due to irregularities present in components and sudden changes in cross-section is known as stress concentration. For example, groves, keyways, screw threads, oil holes, splines etc. are irregularities.
What is the advantage of nitriding? Select all correct answers.
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Some complex components can be nitride without difficulty. |
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Better wear resistance. |
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Better fatigue resistance. |
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The cheapest method of case hardening. |
What is the correct definition of plastic deformation?
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The behavior of a material when its size changes by the addition of heat. |
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The behavior of a material that deforms under load and returns to its original shape when the load is removed. |
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Deformation caused by cleavage, where the material is actually pulled apart across atomic planes within the crystals or along the grain boundaries. |
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The behavior of a material that deforms under load and does not fully return to its original shape when the load is removed. |
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