REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

SHOCK TO DETONATION TRANSITION OF HIGH EXPLOSIVES INVESTIGATION

Vesna Džingalašević

Military Technical Institute, Belgrade

Gordana Antić

Military Technical Institute, Belgrade

Danica Simić

Military Technical Institute, Belgrade

Zoran Borković

Military Technical Institute, Belgrade

Abstract: This paper includes results of the examination of explosive detonation process development by shock wave initiation obtained in the past three years. First, a new method has been defined, the modified GAP test, which examines the explosive sensitivity to shock wave. The GAP system consists of a flat shock wave generator and attenuator of polyethylene, whose shock adiabate is already determined. Shock sensitivity is examined for explosive charges FH-5 and FP-5 and for cast composite explosives LKE-11 and LKE-15 by modified GAP test. Shock to detonation transition, SDT process, was tested on cast composite (LKE-70/10, LKE-11 and LKE-15) and pressed explosives (FH-5 and FP-5), for different values of the shock wave pressure. The distance to detonation and ''Pop-plot'' diagram were determined based on the analyses of the obtained results, for each explosive composition and intensity of the shock pressure.

Key words: shock wave, initiation, GAP test, particle velocity, Lagrange gage, electromagnetic method, cast PBX, FH-5, FP-5.