The article presents a study on the influence of shock wave on a Hybrid III anthropomorphic test device (ATD HIII) equipped with an explosive ordnance disposal (EOD) suit. The shock wave was generated by the detonation of SEMTEX 1A plastic explosive, formed in the shape of a 250 g, 500 g, and 840 g sphere, at a distance of 0.5 m, 1 m, and 2 m. The use of ATD allowed for determining parameters of damage to the human body as a result of the impact of overpressure wave. The experiments also included a measurement of such parameters as forces and moments on lower extremi-ties, acceleration of head and pelvis, and forces and moments on a neck simulator. Chest Wall Velocity Predictor (CWVP), calculated from the pressure measured on ADT’s chest, was adopted as the most critical parameter. It was revealed that the allowed distance of explosion of a 500 g pure explosive, which does not cause exceeding the allowed parameters, is 1 m.

No abstract

The article discusses issues associated with removing explosive from artillery shells, with particular focus on hydrofluidic washing out technology. A multi-well hydraulic test site and highpressure work equipment, as well as testing methodology used in field tests, which allow washing out of explosive materials from such ordnance using a high-pressure water jet, are presented. The studies on the hydro-jet process of washing out trinitrotoluene (TNT) were carried out on high-explosive (HE) shells with calibres of 85, 100, 122 and 125 mm. As a result of the tests, the variability of the TNT washing out mechanism, dependent on hydro- and thermodynamic conditions of this process, which in turn are dependent mainly on the pressure of the water jet, was proven. Comparison of the results of these experiments with the results of previous studies on the washing out of a substitute material which duplicated the mechanical properties, resulted in the determination of an appropriate factor correcting the potential effectiveness of such a process, which allows conducting safe simulation tests under laboratory conditions. In turn, evaluation of the morphology and geometrical structure of washed out TNT, as well as its thermal stability and detonation velocity made it possible to suggest possible applications of the washed out explosive material, especially as a component of mining explosive materials.