The use of digital speckle radiography to study the ballistic deformation of a polymer bonded sugar (an explosive simulant)

H.J. Prentice (1) , W.G. Proud (1) , S.M. Walley (1) , J.E. Field (1)

1 Fracture and Shock Physics Group

This paper reports an initial study into the benefits of determining two-dimensional flow fields for low velocity impact on a small-scale model of explosive reactive armour (ERA) using digital speckle radiography (DSR). The model system consisted of a polymer-bonded sugar (PBS) (otherwise known as a sugarmock) confined between two mild steel plates. The DSR technique relies upon creating a layer within the specimen that is seeded with lead particles. So although radiography itself is mechanically non-invasive, the lead layer needed may change the mechanical properties of the material. DSR revealed where regions of intense shear occurred in normal impact. These regions are likely to be where a polymer-bonded explosive (PBX) would initiate.

Mots clés: Physical Sciences

Domaines: Physique [physics]

H.J. Prentice, W.G. Proud, S.M. Walley, J.E. Field. The use of digital speckle radiography to study the ballistic deformation of a polymer bonded sugar (an explosive simulant). International Journal of Impact Engineering, 2010, 37 (11), pp.1113. ⟨10.1016/j.ijimpeng.2010.05.003⟩. ⟨hal-00723001⟩