Accession Number:

ADA135292

Title:

Quasi-Static Compaction Studies for DDT Investigations: Inert Materials

Descriptive Note:

Corporate Author:

NAVAL SURFACE WEAPONS CENTER SILVER SPRING MD

Report Date:

1982-12-01

Pagination or Media Count:

109.0

Abstract:

Extensive quasi-static compaction experiments were performed on porous beds of two powered inert materials Teflon 7C, a highly crystalline polymer, and melamine, a molecular crystal. These two materials were selected to be somewhat representative of the range of deformation behavior that can occur for high energy propellants and their crystalline energetic ingredients, respectively. This quasi-static compaction work is a companion study to an investigation of the dynamic compaction behavior performed by other investigators on these two materials. It provides insight into the dynamic experiments and helps in their modeling as well as in modeling the complete DDTdeflagration to detonation transition process when significant compaction occurs. Applied force, transmitted force, and porous bed displacement were measured simultaneously during the quasi-static compaction experiments. An average axial compressive force within the granular material comprising unit cross-sectional area of the porous bed, called the intragranular stress, was then calculated as a function of percent theoretical maximum density for a portion of the compaction data. Initial measurements of sound velocity and hardness Vickers and Shore on various compacted samples are given.

Subject Categories:

  • Ammunition and Explosives
  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE