stress

stress - Electrical Resistance Strain Gages: Beam Bending...

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Electrical Resistance Strain Gages: Beam Bending Ben Truschel Group 2 MAE 244 Sec : Nick Wu 2/16/06
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Introduction In the following experiment, an electrical-resistance strain gage is used to measure the amount of strain that a certain material has. The strain gage uses the changes in resistance to calculate the strain that occurs in the material. The values that are obtained from the strain gage will be compared to the theoretical values to see how accurate they are. The theoretical values can be obtained by using the linear beam theory to calculate the strain. A measuring device will also be used to measure the deflection as the different loads are applied. The deflection is used to calculate the theoretical values. Schematic Figure 1
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Analysis of Results Aluminum Length (in) Thicknes s t (in) Free end to gage center d (in) Width b (in) I c 8 0.1385 6 0.983 0.00021 7631 0.06925 Applied Loading (lbs) Aluminu m Axial Gage (mE) Aluminum Transvers e Gage (mE) Aluminum Beam-tip Deflection (in) Theore tical Stress Elastic Modulu s Poisson
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stress - Electrical Resistance Strain Gages: Beam Bending...

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