Mohrs Circle and Strain Gauge Rosette Lab Report

Mohrs Circle and Strain Gauge Rosette - Lab Report ExampleAn aluminium mixture shaft, clamped at one end within a rig 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 gages are mounted on the upper come along 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 using a switchboard, to be one arm of a Wheatstone bridge arrangement 1 research and give reference , with a dummy strain gauge providing temperature compensation. The Wheatstone bridge is a divided bridge circuit used 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), determine the pr incipal strains I and II, as sound as the direction of supreme shear strain. Also, determine the value of Poissons ratio, , for the material. In this experiment I should theoretically be equal and in the direction of x. unavoidably there will be experimental errors so your result may be different. In the discussion section (6.), discuss possible reasons why the maximum strain obtained may not be predicted to occur in the x-direction,