A belt with density 60 pounds per cubic feet has a larger pulley of diameter nine inches at 1200 rpm. There are five square belts with width 1.5 inches and thickness one inch. If the tension on slack side is 180 pounds, coefficient of friction is 0.3, angle of wrap at 120 degrees. Determine the induced stress on the leather belt in psi. (Note that for the equation for determining centrifugal tension, there is yet no number of belts involved because it describes the centrifugal force effect in each belt member.)
Theory and Design for Mechanical Measurements
Measurement is a term that refers to analyzing a manufactured component regarding the degree of accuracy for dimensions, tolerances, geometric profile, roundness, flatness, smoothness, etc. Measurement always involves comparing the manufactured component or the prototype with a standard specimen whose dimensions and other parameters are assumed to be perfect and do not undergo changes with respect to time.Precisely in mechanical engineering the branch that deals with the application of scientific principles for measurements is known as metrology. The domain of metrology in general deals with various measurements like mechanical, chemical, thermodynamic, physical, and biological measurements. In mechanical engineering, the measurements are limited to mechanical specific such as length, mass, surface profile, flatness, roundness, viscosity, heat transfer, etc.
Basic principles of engineering metrology
Metrology is described as the science of measurement, precision, and accuracy. In other words, it is a method of measurement based on units and predefined standards.
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