Appleby-Thomas, Gareth J.Wood, D. C.Hameed, AmerPainter, JonathanFitzmaurice, Brianna C.2016-11-082016-11-082016-10-29Appleby-Thomas GJ, Wood DC, Hameed A, Painter J, Fitzmaurice B, (2016), On the effects of powder morphology on the post-comminution ballistic strength of ceramics. International Journal of Impact Engineering, Volume 100, February 2017, Pages 46-55http://dspace.lib.cranfield.ac.uk/handle/1826/10959https://doi.org/10.1016/j.ijimpeng.2016.10.008In this paper in order to try and elucidate the effects of particle morphology on ballistic response of comminuted systems, a series of experiments were carried out via the use of powder compacts with differing initial particle morphologies. This approach provided a route to readily manufacture comminuted armour analogues with significantly different microstructural compositions. In this study pre-formed `fragmented-ceramic' analogues were cold-pressed using plasma-spray alumina powders with two differing initial morphologies (angular and spherical). These compacts were then impacted using 7.62-mm FFV AP (Förenade Fabriksverken Armour Piercing) rounds with the subsequent depth-of-penetration of the impacting projectile into backing Al 6082 blocks used to provide a measure of pressed ceramic ballistic response. When material areal density was accounted for via differing ballistic efficiency calculations a strong indication of particle morphology influence on post-impact ceramic properties was apparent. These results were reinforced by a separate small series of plate-impact experiments, whose results indicated that powder morphology had a strong influence on the nature of compact collapse.Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Article15539235