Premium
A Rapid, Accurate Technique for Determining Densities of High Explosives
Author(s) -
Lagus P. L.,
Turner P. L.,
Gaffney E. S.
Publication year - 1977
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.19770020405
Subject(s) - explosive material , pellets , gas pycnometer , porosity , materials science , homogeneity (statistics) , differential pressure , void (composites) , helium , nuclear engineering , analytical chemistry (journal) , mechanics , composite material , chemistry , chromatography , mathematics , physics , atomic physics , engineering , statistics , organic chemistry
Abstract An improved gas comparison pycnometer has been developed, based on precise differential pressure measurements coupled with a sample volume compensator. Using helium gas, volumes of solid and powdered explosives can be measured to a precision approaching one part in lo4. Coupled with a precise mass measurement, these volumes allow densities with an uncertainty of ∼± 0.002 g/ml to be inferred. Measurements performed on various explosives have allowed assessment of the purity and homogeneity of individual samples. It is also possible to infer void percentage or porosity in pressed explosive pellets.