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).

• Supplemental Notes:
  • Sponsored in part by National Highway Traffic Safety Administration, Washington, D.C.
• Corporate Authors:

  National Bureau of Standards

  Institute for Materials Research
  Washington, DC  United States  20234

  National Highwa Traffic Safety Administration

  Washington, DC  United States 
• Authors:
  • DeReggi, A S
  • Edelman, S
  • Roth, S C
• Publication Date: 1976-6

Media Info

• Pagination: 42 p.

Subject/Index Terms

• TRT Terms: Crash 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;

Filing Info

• 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