Wednesday, October 16, 2019

Photoelastic Methods Assignment Example | Topics and Well Written Essays - 1250 words

Photoelastic Methods - Assignment Example There has been recent methods namely Converging Light Method, Scattered Light Method and freezing Method, which are used in direct application of three dimensional models. In the engineering field, this method of photoelasttic analysis of stress is important as it is used to calculate stresses under different circumstances. A series polariscope involves an optical instrument that is used in performing the measurements of quantitative strain through photostress reflection photoelasticity method. The device is lightweight and compact and easy to operate. It is always designed for the tripod mounting or hand hold. It is always equipped to accommodate different special purpose accessories that adapt it to perform different tasks of measuring the strain with the photoelastic coatings. This experiment was conducted with a view to apply the photoelastic methods of measuring stress to get the values of the normal stress values of a beam and making a comparison of the measured stress values computed from the theory of elementary material strength. The study sought to compare theoretical values with measured values of the beam deflection. This study also sought to demonstrate the use and application of Maxwell’s law of reciprocal deflections In this experiment, the focus was on beam analysis. It involved applying the photoelastic techniques, and testing the cantilever beam. The aim was to use the Cantilever beam to help understand the fringe by relating to the magnitude of strain. As often the case, the cantilever beam is always coated at one end using a photostress plastic and clamped to the table’s or bench’s edge. Besides, the sought to measure the deflection using the dial gage and the stress found by photoelasticity. The beam dimensions were taken and mounted to the needed fixed support with the help of a C clamp. A single dialing indicator was put at the beam’s center and the other next to the free end

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