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Extended investigation of the dwell effect for an unconfined silicon carbide ceramic against tungsten-heavy-alloy rods

: Behner, Thilo; Heine, Andreas; Wickert, Matthias

Chocron, Sidney (Ed.):
30th International Symposium on Ballistics 2017. Proceedings. Vol.2 : Long Beach, California, USA, September 11-15, 2017
Lancaster, Pa.: DEStech Publications, 2017
ISBN: 978-1-60595-419-6
International Symposium on Ballistics <30, 2017, Long Beach/Calif.>
Fraunhofer EMI ()

This paper extends a recently published investigation on the dwell capability of singleceramic tiles of limited thickness for protection against tungsten-heavy-alloy (WHA)rod penetrators. Direct impact experiments with long WHA rods against unconfinedSiC tiles supported by a steel backing were performed at impact velocities rangingfrom 1100 m/s to 1800 m/s. The ceramic tile was either bare or had a small bufferlayer attached to the front. For the bare ceramic, the area density of the penetratedmaterial ρ increases linearly with increasing impact velocity but at a reduced slopewhen compared to a semi-infinite RHA target. For the buffered ceramic, dwell ispossible up to around 1700 m/s. Compared to the bare ceramic ρ is smaller andthe buffered ceramic performs best regarding mass efficiency at an impact velocity ofabout 1600-1700 m/s before the performance drops sharply towards values in therange of the bare ceramic. Part of the work presented here has recently beenpublished in a journal article [Behner et al., Int. J. Impact Eng. 95 (2016) 54-60].