Plate-impact-driven ring expansion test (PIDRET) for dynamic fragmentation
Résumé
A new experimental setup 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 10 4 s-1. The repeatability and the reliability of the experiments are verified for rings made of steel and aluminium.
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2021_epjconf_dymat2021_01013_FG-GS-PL-SEM-JLS_PIDRET.pdf (740.24 Ko)
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