ANALYSIS OF THE DYNAMIC TRANSMISSION BEHAVIOUR OF PIEZOELECTRIC FILM SENSORS |
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| Andre Zander, Rolf Kumme |
- Abstract:
- The goal of this analysis was to obtain knowledge about the dynamic transmission behaviour of piezoelectric film sensors based on Polyvinylidenefluoride (PVDF). Therefore a crossvalidation to the well-known behaviour of strain gauges based on constantan foils was conducted. The test equipment was composed of a shaker and a test piece with affixed sensors. The test piece was stressed through the connection to a load mass. The film sensors based on PVDF were mounted to the test piece in such a way that the load direction was parallel to the longitudinal axis of the PVDF-material. In this way it was guaranteed that the highest piezo strain constant d31 was mainly used. The output signals of the sensors were measured and the frequency response of the piezo film sensors in relation to the strain gauges were calculated. The results indicated that for frequencies above approx. 250 Hz the piezo film sensor frequency response modulus was a constant value with respect to the strain gauges and that for this frequency range there is the possibility to determine a specific transmission value of the used piezo film sensors similar to the “k-factor” of strain gauges. Furthermore, the high pass filter characteristic of the chosen charge amplifier could be identified.
- Download:
- IMEKO-TC3-2002-017.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC3
- Event name:
- Joint International Conference on Force, Mass, Torque, Hardness and Civil Engineering Metrology in the age of globalization
- Title:
18th Conference on Force, Mass and Torque (together with 8th HARDMEKO TC5 Conference on Hardness Measurement and 1st TC20 Conference on Civil Engineering Metrology)
- Place:
- Celle, GERMANY
- Time:
- 24 September 2002 - 26 September 2002