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Abstract
Experimental data on the measurement of time of passive explosive initiation by an active charge through an inert target with air gaps are presented. Two types of gaps are considered: perpendicular to the passive charge (a slit in the inert target) and parallel to the surface of the passive charge (between the inert target and the passive explosive). In the case of gaps parallel to the surface of the passive explosive charge, two-wave loading of the passive explosive charge created by impacts of thin plates, which are located on the surface of the main target on the side facing the passive explosive charge, is studied. Experimental data are analyzed by numerical calculations with the EGAK software on a Eulerian grid, and the instant of initiation is determined by a criterial parameter F, which is proportional to the energy released in shear strains, when a shock wave passes through the passive explosive charge.
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