mae3800-Lab5 - Date: October 26, 2006 To: Prof. Frank Feng...

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Date: October 26, 2006 To: Prof. Frank Feng From: Christopher Cunningham 898470 Re: Pressure measurement for soda cans Objective There is a problem with a new brand of sodas spontaneously opening on store shelves. Several reasons may exist as to why this happens and one of the culprits will be experimented with. The pressure inside the can will be measured using a strain gage on the outside of the can. The voltage will be measured and appropriate calculations will be made to find if pressure is causing the cans to pop-open. Set-Up The internal pressure is found using a strain gage to monitor the change in the strain component when the container is opened. To attach the strain gage, the can is sanded smooth and the gage is prepped using a small amount of catalyst. The gage is adhered to surface using M-Bond 200 and 28 gage stranded wire is soldered to the two terminals; positive and negative are reversible. The strain gage bridge circuit is a useful Wheatstone bridge circuit.
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Fig. 1. Strain gage bridge circuit
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This note was uploaded on 01/12/2011 for the course MAE 3800 taught by Professor Feng during the Spring '10 term at Missouri (Mizzou).

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mae3800-Lab5 - Date: October 26, 2006 To: Prof. Frank Feng...

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