Optimization of Wall Velocity Measurements Using Photonic Doppler Velocimetry (PDV)

• Autorzy: Künzel M. , Němec O. , Pachman J.
• Języki publikacji: EN

Abstrakty

EN

The paper describes the measurement of cylindrical charge wall velocity profiles at various angles to the surface normal. The wall velocities were measured using simple zero generation photonic Doppler velocimetry (PDV). The detonation velocity was measured simultaneously using fiber optic probes coupled with a digital chronometer. The PDV probe angles were set in the range of -2° to 17° to the surface normal. Powdered pentaerythritol tetranitrate (PETN) and the PETN-based plastic-bonded explosive Semtex 1A were selected as the explosive materials in order to ensure reliable detonation under the measurement conditions. The explosive charges were confined in thin-walled aluminum tubes with an internal diameter of 16 mm and wall thickness of 2 mm. The results can be useful for the characterization of charge expansion phenomena and also for the optimization of cylinder test measurements using PDV. Gurney constants were determined for both explosives.

Słowa kluczowe

EN

bare fiber probe; Gurney constant; pentaerythritol tetranitrate; photonic Doppler velocimetry; Semtex

• Czasopismo: Central European Journal of Energetic Materials
• Rocznik: 2015
• Tom: Vol. 12, no. 1
• Strony: 89--97
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Künzel M.

• Institute of Energetic Materials, Faculty of Chemical Technology, University of Pardubice, Studentska 95, Pardubice, 532 10, Czech Republic

autor

Němec O.

• Institute of Energetic Materials, Faculty of Chemical Technology, University of Pardubice, Studentska 95, Pardubice, 532 10, Czech Republic

autor

Pachman J.

• Institute of Energetic Materials, Faculty of Chemical Technology, University of Pardubice, Studentska 95, Pardubice, 532 10, Czech Republic

Bibliografia

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Uwagi

Part of this paper was presented at the 2013 International Autumn Seminar of Propellants, Explosives and Pyrotechnics, held in September 2013, Chengdu, China.