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3747006 
Journal Article 
Investigation of Blast Performance and Solid Residues for Layered Thermobaric Charges 
Trzcinski, WA; Barcz, K; Paszula, J; Cudzilo, S 
2014 
1 
Propellants, Explosives, Pyrotechnics
ISSN: 0721-3115 
WILEY-V C H VERLAG GMBH 
WEINHEIM 
39 
1 
40-50 
English 
WOS:000331977700007 
The confined explosion of an annular layered charge composed of a phlegmatized RDX (RDXph) core and an external layer consisting of aluminum powder (Al) or a mixture of ammonium perchlorate (AP) and Al was studied. Experiments were carried out in fully and partially closed structures, i.e., in the explosion chamber of 150dm(3) in volume and in the 40m(3) volume bunker with four small holes and a doorway. Two types of aluminum powder were used in the mixtures. Signals of overpressure from two piezoelectric gauges located at the chamber wall were recorded and the influence of aluminum contents and particle size on a quasi-static pressure (QSP) was studied. Moreover, the solid residues from the chamber were analyzed by using SEM, TG/DTA and XRD techniques to determine their structure and composition. Pressure and light histories recorded in the bunker enable us to determine the blast wave characteristics and time-duration of light output. The effect of the charge mass and aluminum particle size on blast wave parameters were investigated. For comparison, the test for RDXph and TNT charges were also carried out. 
Thermobaric explosives; Layered charges; Confined explosions