1. Wheatstone Bridge Discussion D2.6

2. Wheatstone Bridge Measuring Resistance Strain Gauges

3. Wheatstone Bridge Note that if and then Why?

4. Wheatstone Bridge

5. Measuring Resistance, R 3 Solving for R 3

6. Wheatstone Bridge Measuring Resistance Strain Gauges

7. Strain Gauge L LL Definition of strain,  Force

8. Strain Gauge A l = length Resistance Recall  resistivity in Ohm-meters Force Under axial strain, l increases and A decreases so the resistance R increases

9. Strain Gauge Gauge factor, G F

10. Measuring Strain,  Solving for 