Explanation:
The design of components for many engineering systems is based on the application of
theoretical models. The accuracy of these models can be verified through testing. One way of
validating a math model is to use a strain Gage measurement system to measure the strain at the
surface of a structure. The sensor used to transfer a mechanical strain to a quantifiable output is
the strain Gage. The strain Gage has a resistance which changes as a function of mechanical
strain. Although the change in resistance can be quantified using an ohm meter, signal
conditioning is used to convert the change in resistance to a voltage. The voltage may then be
amplified, thus reducing quantization errors. The relationship between the input strain and the
output voltage may be determined using the system sensitivity.
