PIEZOELECTRIC POLYMER TRANSDUCERS FOR DYNAMIC PRESSURE MEASUREMENTS
The report describes the construction, testing and calibration of piezoelectric polymer sensing transducers of two sizes. The piezoelectric material was obtained by poling 25 micrometer thick, polyvinylidene fluoride sheet. Sensors with an active area of 1 cm diameter, intended for dynamic interface-pressure measurements, were calibrated in a fixture generating normal pressure transients by means of piston impact. Sensors with an active area of 2 mm diameter, intended for measuring dynamic pressures while implanted in the cranium of rhesus monkeys, were calibrated in an oil cell with a piston-cylinder seal which provided hydraulic pressure transients by means of impact on the piston. The larger sensors had a normal-pressure sensitivity around 3 microvolts/Pa (20 mV/psi) and the smaller sensors a hydraulic-pressure sensitivity around 0.7 microvolts/Pa (5 mV/psi).
- Sponsored in part by National Highway Traffic Safety Administration, Washington, D.C.
National Bureau of StandardsInstitute for Materials Research
Washington, DC United States 20234
National Highwa Traffic Safety AdministrationWashington, DC United States
- DeReggi, A S
- Edelman, S
- Roth, S C
- Publication Date: 1976-6
- Pagination: 42 p.
- TRT Terms: Impact tests; Impacts; Piezoelectric transducers; Pressure gages; Resins; Traffic crashes; Vinyl resins
- Uncontrolled Terms: Motor vehicle accidents
- Old TRIS Terms: Bioinstrumentation; Pressure sensors; Vinylidene resins
- Subject Areas: Research; Safety and Human Factors;
- Accession Number: 00151759
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NBSIR-76-1078
- Files: NTIS
- Created Date: Apr 27 2002 12:00AM