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Characterising the Response of Energetic materials and Polymer-Bonded Explosives (PBXs) to High-Rate Loading.

Published online by Cambridge University Press:  26 February 2011

William Proud ,
M.W. Greenaway ,
C.R. Siviour ,
H. Czerski ,
J.E. Field ,
D. Porter ,
P. Gould ,
P.D. Church  and
I.G. Cullis
William Proud
Affiliation:
[email protected], Cavendish Laboratory, Physics and Chemistry of Solids Group, J.J. Thomson Ave., Madingley Road, Cambridge, N/A, CB3 0HE, United Kingdom, 01223-337205, 01223-337336
M.W. Greenaway
Affiliation:
Physics and Chemistry of Solids Group, Cavendish Laboratory, J.J. Thomson Ave, Cambridge, CB3 0HE, United Kingdom
C.R. Siviour
Affiliation:
Physics and Chemistry of Solids Group, Cavendish Laboratory, J.J. Thomson Ave, Cambridge, CB3 0HE, United Kingdom
H. Czerski
Affiliation:
Physics and Chemistry of Solids Group, Cavendish Laboratory, J.J. Thomson Ave, Cambridge, CB3 0HE, United Kingdom
J.E. Field
Affiliation:
Physics and Chemistry of Solids Group, Cavendish Laboratory, J.J. Thomson Ave, Cambridge, CB3 0HE, United Kingdom
D. Porter
Affiliation:
QinetiQ, Farnborough, Ively Road, Farnborough, GU14 0LX, United Kingdom
P. Gould
Affiliation:
QinetiQ, Farnborough, Ively Road, Farnborough, GU14 0LX, United Kingdom
P.D. Church
Affiliation:
QinetiQ, Fort Halstead, Sevenoaks, Kent, TN14 7BP, United Kingdom
I.G. Cullis
Affiliation:
QinetiQ, Fort Halstead, Sevenoaks, Kent, TN14 7BP, United Kingdom
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Abstract

Polymer-bonded explosives (PBXs) are being increasingly used as energetic fillings and components in many systems. They are perceived as more chemically and mechanically stable than traditional fillings such as RDX/TNT. They are castable into predetermined shapes, machinable and can be used as structural components. However, along with all these undeniable advantages, as a class, these materials are now undergoing extensive characterisation to ensure they comply with both the legal and technical requirements in energetic systems.

It is well-known that polymers display non-linear behaviour and are much more complex than, for example, simple metal systems at any rate of strain. The understanding of PBX systems involves areas as diverse as polymer chemistry, chemical compatibility, mechanical properties, impact tests, and thermal stability. In this paper, aspects of energetic material response are outlined which are relevant to the understanding of PBX sensitivity.

Keywords

energetic materialpolymergrain size
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 896: Symposium H – Multifunctional Energetic Materials , 2005 , 0896-H08-02
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCES

1. Bowden, F.P. and Yoffe, A. D., Initiation and Growth of Explosion in Liquids and Solids (republ. 1985). 1952, Cambridge: Cambridge University Press.Google Scholar
2. Bowden, F.P., Singh, K., and Yuill, A. M., Size effects in the initiation and growth of explosion. Nature, 1953. 172: p. 378–380.Google Scholar
3. Bowden, F.P., Evans, B.L., and Yoffe, A.D., The combustion and explosion of crystals, in Proc. Sixth Symp. (Int.) on Combustion. 1957, Reinhold: New York. p. 609–612.Google Scholar
4. Bowden, F.P. and Yoffe, A.D., Fast Reactions in Solids. 1958, London: Butterworth.Google Scholar
5. Field, J.E., Swallowe, G.M., and Heavens, S.N., Ignition mechanisms of explosives during mechanical deformation. Proc. R. Soc. Lond. A, 1982. 382: p. 231–244.Google Scholar
6. Field, J.E., Hot spot ignition mechanisms for explosives. Accounts Chem. Res., 1992. 25: p. 489–496.Google Scholar
7. Bonnett, D. L. and Butler, P. B., Hot-spot ignition of condensed phase energetic materials. J. Propulsion Power, 1996. 12: p. 680–690.Google Scholar
8. Coffey, C.S., et al. , Experimental investigation of hot spots produced by high rate deformation and shocks, in Proc. Seventh Symposium (Int.) on Detonation, Short, J.M., Editor. 1981, Naval Surface Weapons Center: Dahlgren, Virginia. p. 970–975.Google Scholar
9. Armstrong, R.W., et al. , Investigation of hot spot characteristics in energetic crystals. Thermochim. Acta, 2002. 384: p. 303–313.Google Scholar
10. Sharma, J., et al. , Atomic force microscopy of hot spot reaction sites in impacted RDX and laser heated AP. Mater. Res. Soc. Symp. Proc., 1996. 418: p. 257–264.Google Scholar
11. Gifford, M.J., Proud, W. G., and Field, J. E., Development of a method for quantification of hot-spots. Thermochim. Acta, 2002. 384: p. 285–290.Google Scholar
12. Balzer, J.E., et al. , High-speed photographic study of the drop-weight impact response of RDX/DOS mixtures. Combust. Flame, 2003. 135: p. 547–555.Google Scholar
13. Proud, W.G., Kirby, I. J., and Field, J. E., The nature, number and evolution of hot-spots in ammonium nitrate, in Shock Compression of Condensed Matter – 2003, Furnish, M. D., Gupta, Y. M., and Forbes, J. W., Editors. 2004, American Institute of Physics: Melville NY. p. 1017–1020.Google Scholar
14. Butler, P.B., Kang, J., and Baer, M. R., Hot spot formation in a collapsing void of condensed-phase, energetic material, in Proc. Ninth Symposium (Int.) on Detonation. 1989, Office of the Chief of Naval Research: Arlington, Virginia. p. 906–917.Google Scholar
15. Walley, S.M., et al. , Response of thermites to dynamic high pressure and shear. Proc. R. Soc. Lond. A, 2000. 456: p. 1483–1503.Google Scholar
16. Bowden, F.P., Stone, M. A., and Tudor, G. K., Hot spots on rubbing surfaces and the detonation of explosives by friction. Proc. R. Soc. Lond. A, 1947. 188: p. 329–349.Google Scholar
17. Afanasev, G.T., et al. , Formation of local hot spots during the fracture of thin layers under shock. Combust. Explos. Shock Waves, 1972. 8: p. 241–246.Google Scholar
18. Chaudhri, M.M., High speed photography of electrical breakdown and explosion of silver azide. Nature, 1973. 242.: p. 110–111.Google Scholar
19. Shonhiwa, T. and Zaturska, M.B., Disappearance of criticality in thermal ignition for a simple reactive viscous flow. J. Appl. Math. Phys., 1986. 37: p. 632–635.Google Scholar
20. Bowden, F.P., et al. , The period of impact, the time of initiation and the rate of growth of the explosion of nitroglycerine. Proc. R. Soc. Lond. A, 1947. 188: p. 311–329.Google Scholar
21. Bowden, F.P. and Yoffe, A., Hot spots and the initiation of explosion, in Proc. Third Symp. on Combustion and Flame and Explosion Phenomena. 1949, Williams & Wilkins: Baltimore, Maryland. p. 551–560.Google Scholar
22. Proud, W.G., et al. , AFM studies of PBX systems. Thermochim. Acta, 2002. 384: p. 245–251.Google Scholar
23. Proud, W.G., The measurement of hot-spots in granulated ammonium nitrate, in Shock Compression of Condensed Matter – 2001, Furnish, M. D., Thadhani, N. N., and Horie, Y., Editors. 2002, American Institute of Physics: Melville, NY. p. 1081–1084.Google Scholar
24. Gifford, M.J., et al. , Properties of ultrafine energetic materials, in Theory and Practice of Energetic Materials. 4, Chen, L. and Feng, C., Editors. 2001, China Science and Technology Press: Beijing. p. 3–11.Google Scholar
25. Field, J.E., et al. , The shock initiation and high strain rate mechanical characterization of ultrafine energetic powders and compositions. Mater. Res. Soc. Symp. Proc,, 2004. 800: p. 179–190.Google Scholar
26. Chakravarty, A., Proud, W. G., and Field, J. E., Small scale gap testing of novel compositions, in Shock Compression of Condensed Matter – 2003, Furnish, M. D., Gupta, Y. M., and Forbes, J. W., Editors. 2004, American Institute of Physics: Melville NY. p. 935–938.Google Scholar
27. Chakravarty, A., et al. , Factors affecting shock sensitivity of energetic materials, in Shock Compression of Condensed Matter – 2001, Furnish, M. D., Thadhani, N. N., and Horie, Y., Editors. 2002, American Institute of Physics: Melville, NY. p. 1007–1010.Google Scholar
28. Greenaway, M.W., et al. , An investigation into the initiation of hexanitrostilbene by laser-driven flyer plates, in Shock Compression of Condensed Matter – 2001, Furnish, M. D., Thadhani, N. N., and Horie, Y., Editors. 2002, American Institute of Physics: Melville, NY. p. 1035–1038.Google Scholar
29. Partom, Y., A void collapse model for shock initiation, in Proc. Seventh Symposium (Int.) on Detonation, Short, J. M., Editor. 1981, Naval Surface Weapons Center: Dahlgren, Virginia. p. 506–516.Google Scholar
30. Chaudhri, M.M., The initiation of fast decomposition in solid explosives by fracture, plastic flow, friction and collapsing voids, in Proc. Ninth Symposium (Int.) on Detonation. 1989, Office of the Chief of Naval Research: Arlington, Virginia. p. 857–867.Google Scholar
31. van der Heijden, A.E.D. and Bouma, R. H. B., Shock sensitivity of HMX/HTPB PBXs: Relation with HMX crystal density, in Proc. 29th Int. Ann. Conf. of ICT: Energetic Materials Production, Processing and Characterization. 1998, Fraunhofer Institut für Chemische Technologie: Karlsruhe, Germany. p. paper 65.Google Scholar
32. Czerski, H., et al. Links between the morphology of RDX crystals and their shock sensitivity. in Shock Compression of Condensed Matter. 2005. Baltimore: AIP.Google Scholar
33. Greenaway, M.W., Laity, P. R., and Pelikan, V.. X-ray tomography of sugar and HMX granular beds undergoing compaction. in Shock Compression of Condensed Matter. 2005. Baltimore: AIP. in pressGoogle Scholar
34. Gray, G.T. III, et al. , High- and low-strain rate compression properties of several energetic material composites as a function of strain rate and temperature, in Proc. 11th Int. Detonation Symposium, Short, J. M. and Kennedy, J. E., Editors. 2000, Office of Naval Research: Arlington, Virginia. p. 76–84.Google Scholar
35. Idar, D.J., et al. , Influence of polymer molecular weight, temperature, and strain rate on the mechanical properties of PBX 9501. 2001, Los Alamos National Laboratory.Google Scholar
36. Goldrein, H.T., Monitoring the effects of ageing on the mechanical properties of polymer bonded explosives, in Slow Processes: The Accumulation of Molecular Events Leading to Failure on Macroscale (ARL-SR-16), Shaw, R. W., Editor. 2001, Army Research Laboratory: Research Triangle Park, North Carolina. p. 15–30.Google Scholar
37. Siviour, C.R., et al. , High resolution optical analysis of dynamic experiments on PBXs, in Proc. 7th Seminar on New Trends in Research of Energetic Materials, Vágenknecht, J., Editor. 2004, University of Pardubice: Pardubice, Czech Republic. p. 277–284.Google Scholar
38. Siviour, C.R., et al. , Particle size effects on the mechanical properties of a polymer bonded explosive. J. Mater. Sci., 2004. 39: p. 1255–1258.Google Scholar
39. Laity, P.R., et al. High strain rate characterisation of a polymer bonded sugar. in Shock Compression of Condensed Matter. 2005. Baltimore: AIP. in pressGoogle Scholar
40. Sivour, C.R., et al. , High strain-rate properties of a polymer-bonded sugar. in preparation, 2006.Google Scholar
41. Sivour, C.R., et al. , Novel optical techniques applied to a PBX system. in preparation, 2006.Google Scholar