# Verifying Bernoulli Euler Beam Theory Essay

2086 Words Nov 10th, 2016 9 Pages
The overall objective of this lab was to verify Bernoulli-Euler beam theory for the lip-loaded cantilever and use that to calculate the Poisson ratio for the material in this case 6061-T6 aluminum. This was done by having to different objectives for each part of the Lab. Part one was use electrical resistance strain gage, this was to measure the strain a cantilever beam as it undergoes a known deflection. We would then compare the measurements with that of the strains predicted by simple beam theory [1]. The objective for part two was to use two electrical resistance strain gages on the cantilevered beam to measure and calculate the Poisson ratio of the beam. There were several tools need to complete this experiment [1]. First being a strain gauge, which is used to measure average strain over its gage length. The aluminum beam with axial strain gage and another with axial and transverse strain gauges, which allows us to measure the strain the beam is experience. Also flexure frame which hold aluminum beam which uses a micrometer to apply a displacement to the beam and transfers the data to the QuickDAQ system. The primary findings for this experiment are the calculations allowing us to find Poisson ratio its uncertainty, the strain uncertainty, and developing graphs relating tip displacement to the strain gage output. Also using those finding to calculate the uncertainties in Poisson ration and the strain calculation. The value for the Poisson ratio and the uncertainty at…

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