Influence of Polymer Restraint on Ballistic Performanceof Alumina Ceramic Tiles

  • P.R.S. Reddy Defence Metallurgical Research Laboratory, Hyderabad
  • V. Madhu Defence Metallurgical Research Laboratory, Hyderabad
  • K. Ramanjaneyulu Defence Metallurgical Research Laboratory, Hyderabad
  • T. Balakrishna Bhat Defence Metallurgical Research Laboratory, Hyderabad
  • K. Jayaraman Advanced Systems Laboratory, Hyderabad
  • N. K. Gupta Indian Institute of Technology Delhi, New Delhi
Keywords: Alumina ceramic, ballistic impact, polymer fibres, confinement, projectile

Abstract

An experimental study has been carried out to evaluate the influence of confinement ofalumina ceramic tiles through polymer restraint, on its ballistic performance. Tiles of 99.5 per centpurity alumina were subjected to ballistic impact against 7.62 mm armour piercing projectiles atvelocities of about 820 m/s. The tiles of size 75 mm x 75 mm x 7 mm were confined on both facesby effectively bonding varying numbers of layers of polymer fabrics. These were then bondedto a 10 mm thick fibre glass laminate as a backing using epoxy resin. High performance polyethyleneand aramid polymer fabrics were used in the current set of experiments for restraining the tiles.Comparative effects of confinement on energy absorption of tiles with varied number of layersof fabrics were evaluated. It was observed that by providing effective confinement to the tile,energy absorption could be doubled with increase in areal density by about 13 per cent.Photographs of the damage and the effects of restraint on improvement in energy absorptionof ceramic tiles are presented and discussed.
Published
2008-03-01
How to Cite
Reddy, P., Madhu, V., Ramanjaneyulu, K., Bhat, T., Jayaraman, K., & Gupta, N. (2008). Influence of Polymer Restraint on Ballistic Performanceof Alumina Ceramic Tiles. Defence Science Journal, 58(2), 264-274. https://doi.org/10.14429/dsj.58.1646

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