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3 Central European Journal of Energetic Materials

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Piezoelectric Cut Exposed to Shock Wave

Klusáček M., Majzlík J., Vágenknecht J.

Central European Journal of Energetic Materials

2007

Vol. 4, nr 3

95-104

This paper deals with the problem of transformation and practical utilisation of explosion energy. A principle has been suggested and described that enables utilisation of detonation energy of condensed explosive used as energy source exerting shock wave strain upon piezoelectric sample cut prepared from the oxide system PbO-TiO2-ZrO2. The piezoceramic transducer used as generator of impulse electric charge is characterised by several favourable properties. In particular, they include readiness, large temperature and time ranges of functional parameters, variability of working regime, and relatively low price. The given system serves as efficient source of short-time prompt capacity electrical impulse, which can find application in a number of electro-physical disciplines.

Investigation of Inner Channel Effect

Vágenknecht J., Adamík V.

Central European Journal of Energetic Materials

2005

Vol. 2, nr 2

71-85

The article deals with measurement of velocities of detonation in special charges constructed with an inner channel. The detonation course of these charges was investigated by measuring the velocities of detonation. The abnormalities found in the detonation course were interpreted as a consequence of the channel effect. For better understanding of the problem, the operation of channel effect was also investigated by means of a numerical simulation using the method of finite elements in the system ANSYS/LS DYNA3D.

Application of LC-MSD and GC-ECD Techniques in the Analysis of Post-explosion Residues of Explosives with Content of 1,3,5-Trinitroso-1,3,5-triazinane

Varga R., Zeman S., Vágenknecht J., Koložvári M.

Central European Journal of Energetic Materials

2005

Vol. 2, nr 3

85-96

The paper deals with possible applications of the connection of liquid chromatography with atmospheric pressure chemical ionization (APCI) mass spectrometry (Agilent 1100 series LS-MSD system) and gas chromatography with electron capture detector (GC-ECD) in the analysis of some common available or improvised explosives. The analysis of selected types of individual explosives, 2,4,6-trinitrotoluene (TNT), 1,3,5-trinitroso-1,3,5-triazinane (TMTA) and analysis of their mixtures (TNT/TMTA and RDX/TMTA) in their post-explosion residues on the basis of generated characteristic mass spectra by using LC-MSD system is the aim of this work. Post-explosion analysis of TMTA and its explosive mixtures can be similarly complicated, like that of the well-known plastic explosive on the basis of pentaerythritol tetranitrate, Semtex-1A.