Energy Aerospace Automotive Civil Engineering Industry 4.0 Food Industry Healthcare Transportation Naval Industry Mining Industry Description The piezoelectric Dragonfly® sensor measures dynamic and quasistatic strain. The large bandwidth and high dynamic range enable an exceptionally wide scope of characterization with a single sensor. • Unidirectional strain sensor • High sensitivity • High dynamic range • Wide frequency range • Flexible & conformable • Plug & Play • No power supply required • Vibration analysis: diagnosis, modal analysis, product development, design validation, material characterization • Monitoring (SHM, CBM): life-span optimization, predictive maintenance, decision making, tension rod surveillance, wear monitoring • Event detection: shocks, crack initiation, fatigue failure, leaks, cavitation • Quality and process control: in-operation control, safety, yield optimization • Dynamic weighing, counting, load identification, • Human-Machine Interfaces: touch sensitive hard surfaces, gesture recognition Wormsensing reserves the right to make technical changes without notice. Liability for consequential damage resulting from the use of Wormsensing products is excluded. For more details contacts us at [email protected]

Technical data Charge mode DAQ: Kistler 5167A charge amplifier Charge sensitivity Temperature sensitivity Bandwidth Voltage mode Temperature 25°C Temperature [-55°C to +40°C] DAQ: Dewesoft 43A referenced voltage input. Input impedance 10MH Voltage sensitivity Temperature sensitivity Bandwidth Temperature [-55°C to +40°C] Transverse sensitivity |Kt| <4 General Parallel resistance Rp >50 parameters Series resistance Rs <1 Operating temperature range [-55 to +140] Maximum generated voltage 30 Maximum applied voltage 30 Exposure duration 4h Maximum temperature 150 Minimum bending radius 2 (1) Dragonfly®...

Handling Recommendations • It is highly recommended to refer to the Dragonfly® User Manual for the installation : http://www.wormsensing.com/downloads Avoid contact with the active area before mounting. Manipulate the device using the recommended handling area. Avoid bending or applying localized pressure to the sensor. Electrical model Sensitivity The Dragonfly® sensitivity is calibrated by a 4-point bending test on a steel bar with a Poisson’s ratio ν0 = 0.27. The transverse sensitivity ratio Kt is the ratio of the sensitivity in the transverse direction over the sensitivity in the axial direction....

Fatigue life Reference selection The minimal number of load cycles that Dragonfly® can withstand depends on the applied dynamic strain level. The sensor is considered to have failed if its sensitivity is outside of the specifications. The below nomenclature helps you select the correct reference: Interface type Flex size short long Bending radius Static bending applied to Dragonfly® impacts its measurement range. The sensitive element is designed to sustain ±3000 µƐ and static bending induces a static strain which added to the dynamic strain must not exceed ±3000 µƐ. The following figure shows...