The PVDF (polarized polyvinylidene fluoride polymer film) piezoelectric polymer shock-stress sensor: Signal conditioning and analysis for field test application
The PVDF shock sensor is a piezoelectric polymer transducing element that converts stress to charge. This unusually versatile sensor allows accurate measurement of stress pulses of durations up to milliseconds with resolution of nanoseconds over a range of a few bars to at least 0.5 Mbar. Its measurement characteristics depend significantly on stress waveform and circuitry. Field test applications require special consideration of signal conditioning, system characterization, and data analysis. This report describes some unfamiliar characteristics of the PVDF sensor and a field-validated hybrid (complementary hardware and software) approach to the general measurement problem as encountered under field test conditions. Discussed are the use of the sensor, for estimation of signal voltage, through characterization and correction for system properties, design, and realization of special filters, to reduction of observed voltage to the stress experienced by the sensor. 9 refs., 10 figs., 1 tab.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5988972
- Report Number(s):
- SAND-88-2907; CONF-8811100-3; ON: DE89013348
- Country of Publication:
- United States
- Language:
- English
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47 OTHER INSTRUMENTATION
COMPUTER ARCHITECTURE
DATA ANALYSIS
DETECTION
ELECTRICITY
ELECTRONIC CIRCUITS
FIELD TESTS
PIEZOELECTRICITY
POLYMERS
SHOCK WAVES
SIGNAL CONDITIONING
STRESSES
TESTING
TRANSDUCERS