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Design, make, test and evaluate a strain gauge sensor.
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Physics Coursework: Strain Gauge Aim: To design, make, test and evaluate a strain gauge sensor. The sensor has to detect how the change in strain on a wire affects the voltage across the wire. Reasoning behind aim: I have chosen the strain gauge because it is Interesting as well as challenging. The strain gauge presents many different variables and complications, which will help me to understand the meaning of strain and stress. Theory: I have used various resources, including books, CD-ROM's and the Internet to come to this conclusion of the Wheatstone bridge. The Wheatstone bridge circuit in its simplest form (Diagram shown) consists of four resistive elements, or bridge arms (R1, R2, R3, R4), connected in a series-parallel arrangement, and a voltage source(E). The electrical connections where pairs of bridge arms are joined to the wires from the voltage source are referred to as input corners of the bridge. In my experiment...
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