Title :
Advances in piezoelectric PVDF shock compression sensors
Author_Institution :
Inst. Franco-Allemand de Recherches, St. Louis, France
Abstract :
The present paper briefly summarizes the advances in new poling technology, as well as the development of high fidelity, reproducible, time-resolved dynamic stress gauges with small areas. The shock induced polarization for 1 and 9 mm2 precisely poled gauges are compared. The analysis of the response of these gauges in the “thin mode regime” using a Lagrangian hydrocode has been revisited. Shock measurements in polar materials or polymers, using a new shielding technique for PVDF gauges, are presented. Furthermore, shock pressure profiles obtained with PVDF gauges in porous high explosive in a detonation regime have been achieved and are described
Keywords :
detonation; dielectric polarisation; explosions; piezoelectric materials; piezoelectric transducers; polymers; porous materials; shock measurement; strain gauges; Lagrangian hydrocode; PVDF gauges; detonation regime; high fidelity reproducible time-resolved dynamic stress gauges; piezoelectric PVDF shock compression sensors; polar materials; poling technology; polymers; porous high explosive; shock induced polarization; shock measurements; shock pressure profiles; thin mode regime; Copper; Electric shock; History; Lagrangian functions; Mechanical factors; Mechanical sensors; Piezoelectric materials; Piezoelectricity; Polarization; Stress;
Conference_Titel :
Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-5025-1
DOI :
10.1109/ISE.1999.832129
