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Expansion of the Detonation Products of a TATB Based High Explosive: Experimental Characterization by Photon Doppler Velocimetry and High-Speed Digital Shadowgraphy

  • A. Sollier
  • V. Bouyer
  • L-P. Terzulli
  • M. Doucet
  • L. Decaris
  • P. Hébert

Introduction

A good description of the expansion of the detonation products from a chemical explosion is of fundamental importance because it constrains the ballistic performance of the explosive.We describe in this paper an experimental study of the free expansion of detonation products of an insensitive TATB-based explosive by measuring the free surface velocity of the detonating explosive with a PDV velocimeter system. Indeed, recent experiments [1] have demonstrated the ability of such system to record the free surface velocity of a detonating explosive, and also potentially the detonation velocity inside the explosive just before the shock breakout, if the explosive is not entirely opaque in the near IR walelengths, which is the case of most TATB based explosives. PDV appears to be a very promising recording technique for such measurements, because it offers a good time resolution (close to 1 ns) and ability to record over very long durations which is required to measure the reaction product expansion over a large volume range. We also used digital high-speed shadowgraphy to characterize the shape and speed of the products as they release from the bare charge free surface. The results allow to give new insight into the reactions zone of TATB based high explosive. They are compared with numerical simulations performed with different reactive flow models.

Keywords

Reaction Zone Direct Numerical Simulation Detonation Wave Detonation Velocity Detonation Product 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Holtkamp, D.B.: Survey of optical velocimetry experiments - Applications of PDV, a heterodyne velocimeter. In: Proceedings of 2006 IEEE International Conference on Megagauss Magnetic Field Generation and Related Topics, Santa Fe, NM, USA, pp. 119–128 (2006)Google Scholar
  2. 2.
    Mercier, P., Bénier, J., Azzolina, A., Lagrange, J.-M., Partouche, D.: Photonic doppler velocimetry in shock physics experiments. J. Phys. IV France 134, 805–812 (2006)CrossRefGoogle Scholar
  3. 3.
    Mercier, P., Bénier, J., Frugier, P.-A., Contencin, G., Veaux, J., Lauriot-Basseuil, S., Debruyne, M.: Heterodyne velocimetry and detonics experiments. In: Proceedings of 28th International Congress on High-Speed Imaging and Photonics, Canberra, Australia, pp. 7126101–71261010 (2009)Google Scholar
  4. 4.
    Strand, O.T., Goosman, D.R., Martinez, C., Whitworth, T.L.: Compact system for high-speed velocimetry using heterodyne techniques. Rev. Sci. Instr. 77, 083108 (2006)CrossRefGoogle Scholar
  5. 5.
    Lyamkin, A.I., Popov, S.T.: Investigation of the initial stages of the dispersion of trotyl-hexogen compound detonation products in a vacuum. Comb. Expl. Shock. Waves. 27(5), 620–623 (1991)CrossRefGoogle Scholar
  6. 6.
    Ahrens, T.J., Allen, C.F., Kovach, R.L.: Explosive gas blast: The expansion of detonation products in vacuum. J. Appl. Phys. 42(2), 815–829 (1971)CrossRefGoogle Scholar
  7. 7.
    Tarver, C.M., Kury, J.W., Breithaupt, R.D.: Detonation waves in triaminotrinitrobenzene. J. Appl. Phys. 82(8), 3771–3782 (1997)CrossRefGoogle Scholar
  8. 8.
    Sheffield, S.A., Bloomquist, D.D., Tarver, C.M.: Subnanosecond measurements of detonation fronts in solid high explosives. J. Appl. Phys. 80(8), 3831–3844 (1984)Google Scholar
  9. 9.
    Johnson, J.N., Tang, P.K., Forest, C.A.: Shock-wave initiation of heterogeneous reactive solids. J. Appl. Phys. 57(6), 4323–4334 (1985)CrossRefGoogle Scholar
  10. 10.
    Sollier, A., Manczur, P., Crouzet, B., Soulard, L., Quesada, J.-H., Chevalier, J.-M., Bouinot, P., Duconget, R., Matignon, C.: Single and double shock initiation of TATB based explosive T2: Comparison of electromagnetic gauge measurements with DNS using different reactive flow models. In: Proceedings of the 14th Symposium (International) on Detonation, Coeur d’Alene, ID, USA, pp. 563–572 (2010)Google Scholar
  11. 11.
    Wescott, B.L., Scott Stewart, D., Davis, W.C.: Equation of state and reaction rate for condensed-phase explosives. J. Appl. Phys. 98(5), 053514 (2005)CrossRefGoogle Scholar
  12. 12.
    Desbiens, N., Dubois, V.: New developments of the CARTE thermochemical code: I-parameter optimization. In: EPJ Web of Conf., vol. 10, p. 00031 (2010)Google Scholar
  13. 13.
    Matignon, C., Sorin, R., Bozier, O.: Detonation propagation of converging front in IHE: Comparison of direct numerical simulation and detonation shock dynamics against experimental data. In: Proceedings of the 14th Symposium (International) on Detonation, Coeur d’Alene, ID, USA, pp. 1182–1190 (2010)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • A. Sollier
    • 1
  • V. Bouyer
    • 2
  • L-P. Terzulli
    • 2
  • M. Doucet
    • 2
  • L. Decaris
    • 2
  • P. Hébert
    • 2
  1. 1.CEA, DAM, DIFArpajonFrance
  2. 2.CEA, DAM, Le RipaultMontsFrance

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