Hopkinson Bar Studies of a PBX Simulant

ORAL

Abstract

A Split Hopkinson Pressure Bar system was equipped with an environmental chamber for high and low temperature studies of a HTPB/sugar propellant simulant. Experiments were carried out, at a strain rate of $\sim $1600s$^{-1}$, to characterise the material response above and below the glass transition temperature. Other techniques were deployed, including high-speed photography with Digital Image Cross-Correlation analysis for flow visualisation, and a line-laser occlusion method, to determine the dynamic Poisson's ratio. This paper outlines the current state of research and details the important observations to date.

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Authors

  • Daniel Drodge

    University of Cambridge

  • John Addiss

    University of Cambridge

  • David Williamson

    University of Cambridge

  • William Proud

    Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK, University of Cambridge, Cambridge University, Cavendish Laboratory, Cambridge University