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The effect of nitroglycerin content on the quasi‐static compaction behavior of various ball propellants
Author(s) -
Elban W. L.,
Coyne P. J.,
Campbell R. L.
Publication year - 1991
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19910160602
Subject(s) - propellant , compaction , materials science , consolidation (business) , composite material , porosity , mold , radial stress , cylinder stress , ball (mathematics) , geotechnical engineering , deformation (meteorology) , chemistry , geology , mathematical analysis , mathematics , accounting , organic chemistry , business , ultimate tensile strength
The quasi‐static compaction behavior of a number of single‐ and double‐base ball propellants has been investigated to determine the effect of nitroglycerin (NG) content. Simultaneous measurements were obtained of axial applied and transmitted forces, circumferential strain, and porous bed displacement, resulting in the calculation of axial average solid stress and radial stress as a function of porous bed consolidation. Five Olin ball propellants designated as WC140, TS3660, TS3659, Winchester #231, and TS3661 in order of increasing NG content, were compacted. Their NG concentrations ranged from 0 to ∼35 wt%. The most significant effects of increased NG content were to decrease the various axial and radial stress levels present at constant degree of bed consolidation and to increase the coefficient of kinetic friction at the porous bed/mold wall interface. Microscopic examination of recovered samples that had been compacted revealed that extensive plastic deformation occurred in the absence of particle fracture.