the creep data for two different samples. You have been asked to analyse the results, if you know that the original length of specimen is 17.4625 mm and the original width is 4.8 mm and the original thickness 1.6 mm and the cross sectional area is 7.68 mm: 1. Compare the lifetime for these samples. 2. Determine the rapture lifetime for the samples below. 3. Calculate the creep rate for all of them
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.
the creep data for two different samples. You have been asked to analyse the
results, if you know that the original length of specimen is 17.4625 mm and the original width is
4.8 mm and the original thickness 1.6 mm and the cross sectional area is 7.68 mm:
1. Compare the lifetime for these samples.
2. Determine the rapture lifetime for the samples below.
3. Calculate the creep rate for all of them
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