Ballistic Evaluation of Nanocomposite Ceramic

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Authors
  1. Bolduc, M.
  2. Anctil, B.
  3. Lo, J.
  4. Zhang, R.
  5. Lin, S.
  6. Simard, B.
  7. Bosnick, K.
  8. Bielawski, M.
  9. Merati, A.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN)
Abstract
To improve ballistic resistance and to reduce weight of ceramic composite armour, carbon nanotubes and boron nitrite nanotubes were added into ceramic matrix of alumina and silicon carbide by Pressureless Sintering (PS) or Hot Pressing (HP) techniques. Small samples were fabricated to evaluate mechanical properties such as hardness, density and fracture toughness. Results showed little improvement in hardness but significant improvement of fracture toughness encouraging fabrication of larger samples to conduct Depth of Penetration (DOP) tests to assess ballistic performance. Commercial monolithic alumina and silicon carbide tiles were used initially to evaluate the effect of ceramic-backing bonding (no adhesive, grease or glue) and sample confinement (free, frame, lid). Test parameters providing the most repeatable DOP measurements were then used to test different nanocomposite ceramic configurations. Test samples consisted of commercial monolithic alumina and silicon carbide, single wall carbon nanotubes reinforced alumina, boron nitrite nanotubes reinforced alumina and silicon carbide, alumina fibre mat reinforced alumina and alumina fibre mat with carbon nanotubes reinforced alumina. The mass efficiency, ballistic efficiency factor, and critical thickness were calculated to assess the ballistic performance of different configurations. Fracture patterns of reinforced composites were examined with electron microscopy to better understand how the nanotubes influence fracture
Keywords
ballistic;nanocomposite ceramic;depth of penetration
Report Number
DRDC-RDDC-2016-P064 — External Literature
Date of publication
20 Jul 2016
Number of Pages
9
DSTKIM No
CA042929
CANDIS No
804201
Format(s):
Electronic Document(PDF)

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