Effect of Particle Size on the Shock Sensitivity of Pure Porous HE (High Explosive)

Abstract

Literature data show that in the gap tests, coarse porous High Explosive seems more shock sensitive than fine whereas in the most wedge tests, the reverse is true. It is proposed that gap tests measure threshold for ignition, and that the reversal occurs because the time to ignition is shorter and the time of buildup of chemical reaction is longer for the coarse than the fine material. In other words, for any pair of fine and coarse HE in any specific experiment, there is a pressure (P sub r) at and above which ignition for the fine and coarse is simultaneous. At and above this pressure, the finer material appears more sensitive than the coarse. Keywords: Explosive Safety; Propellant Safety; Pressed explosive.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1986
Accession Number
ADA178206

Entities

People

  • Donna Price

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Counter IED
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Chemical Reactions
  • Classification
  • Combustion
  • Energetic Materials
  • Explosives
  • High Explosives
  • High Pressure
  • Hot Spots
  • Ignition
  • Materials
  • Particle Size
  • Particles
  • Powders
  • Propellants
  • Standards
  • Weapons

Readers

  • Brain and Cognitive Science; Experimental Psychology; Cognitive Neuroscience
  • Geotechnical Engineering.
  • Rocket Propulsion.