Mohrs Circle and Strain Gauge Rosette Lab Report

Mohrs Circle and Strain Gauge Rosette - lab Report ExampleAn aluminium alloy beam, clamped at one end within a coiffure containing a cam whose full-range rotation leads to a repeatable tip deflection of = 0.5 = 12.7 mm, as shown in Figure1. The beam has dimensions as follows breadth b = 25.4 mm, depth d = 6.35 mm and length (to the cam) L = 254 mm. Three strain gauges argon attach on the upper surface at 94 mm from the clamped end these gauges are mounted at 15, 45, and 75 with respect to the longitudinal, x-axis, of the beam, as shown in Figure 2. Each of these gauges can be selected victimization a switchboard, to be one arm of a Wheatstone bridge arrangement 1 research and give eccentric , with a dummy strain gauge providing temperature compensation. The Wheatstone bridge is a divided bridge circuit apply to measure electrical resistance these minute changes in resistance correspond to strain in a strain gage in what is known as a bonded resistance strain gage 2From a), ensu re the principal strains I and II, as well as the direction of maximum shear strain. Also, determine the encourage of Poissons ratio, , for the material. In this experiment I should theoretically be equal and in the direction of x. Inevitably there will be experimental errors so your result may be different. In the discussion role (6.), discuss possible reasons why the maximum strain obtained may not be predicted to occur in the x-direction,