Page 8 - Vibrations 6

If you need more measurement sources, just add more

modules to the CompactDAQ chassis.

You can now see how the NI instruments offer greater

flexibility than a single spectrum analyser.

Strain Gauges for measuring vibrations

∝ as the strain guage is

stretched (strained) its electrical

resistance will change.

Use an epoxy resin to attach the

strain gauge to the vibrating

surface.

Make the strain gauge as part of a Wheatstone Bridge.

Adjust the resistance values

so that the bridge is

balanced when the strain

gauge is at rest.

Once the strain gauge is

strained a voltage V will generated and can be measured.

The voltage is proportional to the strain.

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