Shaped Charge Jet Initiation on Explosive Charges equipped with barriers made up of various materials
✍ Scribed by Manfred Held
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 558 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0721-3115
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✦ Synopsis
Abstract
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.