Tuning Fork: A Comparison Between Dragonfly® Sensor and Strain Gauge

 

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Abstract

Wormsensing Dragonfly® sensors are high sensitivity flexible strain sensors that enable the measurement of very small strain, in the nano-deformation range. From aerospace design to industrial monitoring, metal foil strain gauges are widely used for mechanical testing and force sensing. Dragonfly® sensors sensitivity permits the observation of phenomena that would previously have gone unseen.

In this paper, we observe this resolution enhancement on a tuning fork equipped with a Dragonfly® sensor as well as a classic metal strain gauge. In this configuration, whereas the strain gauge reaches its noise floor at 40 μdef, with the Dragonfly®, the tuning fork resonance can be seen down to 0.1 μdef.

 

Key Words

Piezoelectric, Strain gauge, Deformation, Tuning fork

 

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