Standardized piezoelectric polymer (PVDF) gauge for detonator response measurement
Time-resolved measurements of pressure profiles from the detonation of explosive devices have proven to be essential for detailed study of device performance. At present such measurements are routinely carried out with laser velocity interferometer (VISAR) systems, electromagnetic particle velocity gauges or piezoresistant (Manganin) gauges. One of the most promising new gauges to appear in recent years is the piezoelectric polymer gauge (PVDF) which has been standardized for general use based on the materials processing techniques developed by Bauer. The special problems presented by small size piezoelectric polymer gauges and nonplanar impacts are studied over a range of impact conditions. The response of 1 mm by 1 mm active area PVDF gauges under precisely controlled compressed-gas gun impacts shows highly reproducible results to pressures of 20 GPa. For the PVDF gauge which is placed within 12 microns of the impact surface and under approximately planar loading with small detonator flyer plates, PVDF gauge signals appear to be reduced by about 15% compared to the compressed-gas gun loading response. For highly nonplanar flyer impacts the PVDF signals are reduced by about 35%. In all stress environments, high quality, time-resolved current pulses are observed. 13 refs., 10 figs., 2 tabs.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6249877
- Report Number(s):
- SAND-88-2098C; CONF-8906118-1; ON: DE89010437
- Resource Relation:
- Conference: International conference of the GTPS, La Grande Motte, France, 5 Jun 1989; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
47 OTHER INSTRUMENTATION
DETONATORS
TESTING
EXPLOSIVES
DETONATIONS
MEASURING INSTRUMENTS
PIEZOELECTRICITY
POLYMERS
RESPONSE FUNCTIONS
ELECTRICITY
FUNCTIONS
450000* - Military Technology
Weaponry
& National Defense
440300 - Miscellaneous Instruments- (-1989)