Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
On the laser ignition and initiation of explosives
Autore:
Bourne, NK;
Indirizzi:
Cranfield Univ, Royal Mil Coll Sci, Swindon SN6 8LA, Wilts, England Cranfield Univ Swindon Wilts England SN6 8LA ndon SN6 8LA, Wilts, England
Titolo Testata:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
fascicolo: 2010, volume: 457, anno: 2001,
pagine: 1401 - 1426
SICI:
1364-5021(20010608)457:2010<1401:OTLIAI>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
DRIVEN FLYER PLATES; SINGLE-CRYSTALS; CYCLOTRIMETHYLENE-TRINITRAMINE; INDUCED DECOMPOSITION; INDUCED FLUORESCENCE; DETONATION PRODUCTS; ENERGETIC MATERIALS; SOLID-PROPELLANT; HIGH-PRESSURE; LEAD AZIDE;
Keywords:
laser; explosives; shock; ignition; impact; detonator;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
149
Recensione:
Indirizzi per estratti:
Indirizzo: Bourne, NK Cranfield Univ, Royal Mil Coll Sci, Swindon SN6 8LA, Wilts, England Cranfield Univ Swindon Wilts England SN6 8LA A, Wilts, England
Citazione:
N.K. Bourne, "On the laser ignition and initiation of explosives", P ROY SOC A, 457(2010), 2001, pp. 1401-1426

Abstract

Energetic materials are conventionally ignited by the application of heat to some part of an explosive target. This is most often provided by a flameor by electrical heating using a resistive wire. The material responds by thermally heating and starting a burning zone, which spreads out from the ignition point generating gas. In some cases this zone can accelerate (due to the effect of this gas) into a reactive shock wave, termed detonation. Lasers are used in a variety of applications to thermal heat a range of materials, and thus seem all obvious candidate to trigger chemical reaction in energetic ones. A light pulse offers several advantages over an electrical one, since it may be delivered down a path both immune to electrical effectsand chemically stable. Thus, the triggering of safety apparatus (such as the firing of bolts on aircraft exits) represents a major thrust in the development of laser-triggered explosive devices. The energy of the pulse may be used in one of two ways to achieve these effects. In the first, the laseris shone directly upon the chemical medium, which absorbs the light at discrete wavelengths. In the second, it is used to vaporize a metallic flyer that is launched to impact on a target creatiug a high-pressure zone. Eithermechanism starts the required reaction. However, when the pulse is delivered directly to the material, detonation is found to proceed immediately with no transition via burning. This makes the process inexplicable using present concepts. This review will address a range of the experiments conductedand theories developed for this novel field. However, it should be emphasized that the fundamental mechanisms remain to be fully explained making theapplication both academically stimulating as well as industrially important.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 13/07/20 alle ore 12:59:54