Homework Solutions 1

What should your gauge factor be in order to achieve

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Unformatted text preview: ero strain is RGo . R RG R Vs RG (top) RG - Vo + (bottom) RG F a. Derive the sensitivity Vo of the strain measurement in terms of Vs , R, RG , G . ε Assume gauge factor, G, for both strain gauges. Hint: You can make a simplification with the small strain case. o b. Assuming that R = RGo , what does the sensitivity expression simplify to? What is the effect of a temperature increase on the sensitivity? c. You now want to find a proper strain gauge to use for this test. You expect your strain at these locations to be ~5%. What should your gauge factor be in order to achieve a 1V output with a 10V source, using the expression y...
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