18. The Effective Hardness of Hot Pressed Boron Carbide with Increasing Shock Stress

  1. Jeffrey J. Swab
  1. C J Roberson1,
  2. P J Hazell2,
  3. P L Gotts3,
  4. Im Pickup4 and
  5. R Morrell5

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291276.ch18

Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7

Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7

How to Cite

Roberson, C. J., Hazell, P. J., Gotts, P. L., Pickup, I. and Morrell, R. (2005) The Effective Hardness of Hot Pressed Boron Carbide with Increasing Shock Stress, in Advances in Ceramic Armor: A Collection of Papers Presented at the 29th International Conference on Advanced Ceramics and Composites, January 23-28, 2005, Cocoa Beach, Florida, Ceramic Engineering and Science Proceedings, Volume 26, Number 7 (ed J. J. Swab), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291276.ch18

Author Information

  1. 1

    Advanced Defence Materials Ltd. Sir Frank Whittle Business Centre Butlers Leap, Rugby Warwickshire, CV21 3XH, UK

  2. 2

    Cranfield University RMCS, Shrivenham Oxfordshire, SN6 8LA, UK

  3. 3

    DLO Defence Clothing R&PS Caversfield Bicester Oxfordshire, OX27 8TS, UK

  4. 4

    DSTL Porton Down, Salisbury, Wiltshire SP4 OJQ, UK

  5. 5

    National Physical Laboratory Hampton Road Teddington Middlesex, TW11 0LW, UK

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982374

Online ISBN: 9780470291276

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Keywords:

  • DOP technique;
  • penetration mechanics;
  • semi infinite aluminium;
  • amour piercing;
  • european annies

Summary

When a sufficient shock stress has been imparted to boron carbide the resistance to penetration can significantly decrease. Using a DOP technique, an increasing shock stress is delivered to 6 mm tiles of boron carbide and their penetration resistance is evaluated by comparing the penetration into a semi-infinite aluminium backing plate. Above a threshold shock stress, the performance of the boron carbide drops off considerably and its performance decreases from that which would be similar to silicon carbide down to something similar to that of a considerably less hard alumina (˜1400 HVS). This paper presents a performance map for hot pressed boron carbide comparing the effective hardness of this ceramic with increasing levels of shock (and hence threat). Conclusions are drawn on the nature of the penetration mechanics.