Shock initiation sensitivity of hexanitrostilbene (HNS)

Conference · Thu Jan 01 00:00:00 EST 1981

OSTI ID:6773456

Schwarz, A C

Experiments were conducted to study the influence of powder morphology, sample density, diameter of the impacting flyer and duration of the stimulus on the shock initiation sensitivity of the high explosive, hexanitrostilbene. The shock stimulus was provided by a polyimide flyer accelerated by an electrically-exploded, metallic foil. Impact pressure (P) was controlled between 3.8 and 9.8 GPa and pulse duration (tau) was nominally 0.035 ..mu..s except for the last experiment where pulse duration varied. Powder morphology significantly influenced the shock amplitude required for initiation with the finest-particle HNS requiring the least pressure, 6.3 GPa, and exhibiting the sharpest threshold. Both a reduction in density of HNS, from 1.60 to 1.30 Mg/m/sup 3/, and an increase in flyer diameter affected a reduction in impact velocity (or pressure) needed to induce detonation. The line which separates detontion from non-detonation is expressed by P/sup 2/ /sup 4/ tau = constant for tau between 0.01 and 0.10 ..mu..s; for longer pulses the initiation criterion becomes one of constant pressure.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6773456
• Report Number(s): SAND-81-0016C; CONF-810602-4
• Resource Relation: Conference: 7. symposium on detonation, Annapolis, MD, USA, 19 Jun 1981
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
CHEMICAL EXPLOSIVES
DETONATIONS
PERFORMANCE
EXPERIMENTAL DATA
IMPACT SHOCK
PERFORMANCE TESTING
DATA
EXPLOSIVES
INFORMATION
NUMERICAL DATA
TESTING
450100* - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives