EPJ Web of Conferences (Jan 2021)

Plate-impact-driven ring expansion test (PIDRET) for dynamic fragmentation

  • Gant Fanny,
  • Seisson Gabriel,
  • Longère Patrice,
  • El Maï Skander,
  • Zinszner Jean-Luc

DOI
https://doi.org/10.1051/epjconf/202125001013
Journal volume & issue
Vol. 250
p. 01013

Abstract

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A new experimental set-up mounted at the muzzle of a singlestage gas gun has been designed in order to study the fragmentation of metallic rings under dynamic radial expansion. This concept takes advantage of the quasi-incompressibility of HDPE whose radial flow under plate impact-like loading is used to apply a pressure boundary condition at the ring’s inner surface. For the experimental configurations considered in the present work, the average strain rate in the ring reaches values close to 104 s-1. The repeatability and the reliability of the experiments are verified for rings made of steel and aluminium.