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Shaped Charge Jet Initiation on Explosive Charges equipped with barriers made up of various materials
Author(s) -
Held Manfred
Publication year - 1994
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.19940190604
Subject(s) - explosive material , materials science , shaped charge , charge (physics) , jet (fluid) , attenuation , composite material , shock wave , mechanics , optics , chemistry , physics , organic chemistry , quantum mechanics
This paper describes initiation tests on cast TNT/RDX (35/65) explosive charges applying shaped charge jets with test set‐ups on which the HE charge was arranged either in contact to a 50‐mm thick barrier or after a 100‐mm thick barrier in a 15‐mm air gap. A variety of materials was attached to the barrier's rear side which, on one band, resulted in a varying shock wave attenuation and also in different bulging effects that are responsible for the differences in the initiation mechanisms observed on the two test arrangements. Materials with a lower density also provide, due to a less precompression of the IIM charge used on the arrangement “test charge in contact”, shorter buildup distances than materials with a higher density. An exception to this is a high ductile material such as e.g. steel. The build‐up distances, however, remain constant when arranging the explosive charge with an air gap. This backs up the hypothesis that most of all, bulging of the target is responsible for the sensitivity reduction observed on the test HE charges in contact with the barrier.