Anti-Bullet Property of Encapsulated AD95 Al₂O₃ Ceramic

Abstract:

2024Al and SiC/2024Al were used to encapsulate the AD95 Al₂O₃ ceramics by Vacuum-high Pressure Infiltration Method. Their anti-bullet properties are not good with Efm of 5.17 and 4.65 respectively, and is far lower than that of the ceramic without encapsulation. The latter one can generate higher hydrostatic pressure between the bullet and ceramic during penetration process. However, in encapsulated targets, the ductile materials in front of the ceramic can decelerate the bullet, so the pressure between bullet and ceramic is not great enough to break the bullet. Propagated microcracks along with the bonding interface were observed in plates consisting of encapsulated Al₂O₃. These microcraks lead to the interfacial debonding between Al₂O₃ and encapsulating materials. Consequently, the anti-bullet property of the ceramic encapsulated by metal or composite is depressed. Further more, the different interface bonding conditions and fracture modes cause the discrepancy of anti-bullet property in two kinds of targets with encapsulation structure.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 494-499
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.494
• Online since: June 2012
• Authors: Ju Bin Gao, Yang Wei Wang, Fu Chi Wang
• Keywords: Anti-Bullet Property, Contact Pressure, Encapsulation, Energy Dissipation

References

[1] D.P. Goncalves, F.C.L. Melo, A.N. Klein, et al. Analysis and investigation of ballistic impact on ceramic/metal composite armour, Int. J. Machine Tools and Manufacture. 44 (2004) 307-316.

DOI: 10.1016/j.ijmachtools.2003.09.005

[2] G.E. Hauver. Ballistic performance of ceramic targets, Army Symposium on Solid Mechanics. USA, (1993).

[3] E. Medvedovski. Alumina ceramics for ballistic protection, Am. Ceram. Soc. Bull. 81 (2002) 45-50.

[4] C. Steven, P Atahan. Encapsulated ceramic armor, US Patent 7604876B2. (2003).

[5] P. Richard, A, Daniel. Ceramic armor and method or making by encapsulation including use of a stiffening plate, US Patent, 2006/0137517. (2006).

[6] K.J. Chen, C.T. Sun. Dynamic large deflection response of composite laminates subjected to impact, Composites and Structure, 4 (1985) 59-73.

DOI: 10.1016/0263-8223(85)90020-0

[7] T. Sun, S.H. Yang, NASA CR-159884, NASA, Washington, DC.

[8] W. Bruchey, E. Horwath, D. Templeton, et al. System Design Methodology for the development of high efficiency ceramic armores, 17th Int. Symp. on Ballistic v3 Midrand, South Africa (1998) 167-174.

[9] E. Horwath, W. Bruchey. The Ballistic Behavior of HIP Encapsulated Ceramic Tiles, 8th Annual TARDEC Ground Vehicle Survivability Symposium, Monterey, CA, 1997.

[10] J.M. Wells, H.G. William, N.L. Rupert. Pre-impact Damage Assessment Using X-ray Tomography of SiC Tile Encapsulated in Discontinuously Reinforced Aluminum Metal Matrix Composite, International Journal of Composites Conference, Australia Sydney, 2001.

[11] J.M. Wells, H.G. William, N.L. Rupert Progress in the 3-D Visualization of Interior Ballistic Damage in Armor Ceramics, Ceramic Engineering and Science Processing, 27 (2006) 441-448.

[12] D. Yaziv, G. Rosenberg, H. Shevah, Parametric Study of Ceramic Laminated Armor Configurations, 3rd TACOM Conference, Monterey, Ca, 1987.

[13] D. Yaziv, G. Rosenberg, Y. Partom, Differential Ballistic Efficiency of Applique Armor, 9th Int. Symp.Bal., UK, 1986.

[14] Y.W. Bao, S.B. Su, J.J. Yang, et al. Prestressed ceramics and improvement of impcat resistance, Materials Letters, 57 (2002) 518-524.

DOI: 10.1016/s0167-577x(02)00822-4

[15] T.J. Holmquist, G.R. Johnson. Modeling prestressed ceramic and its effect on ballistic performance, International Journal of Impact Engineering, 31 (2005) 113-127.

DOI: 10.1016/j.ijimpeng.2003.11.002

[16] R.L Woodward, W.A. Gooch, R.G. O'Donnell, et al. A study of fragmentation in the ballistic impact of ceramics[J]. International Journal of Impact Engineering, 15 (2005) 605-618.

DOI: 10.1016/0734-743x(94)90122-2

[17] C.E.Jr. Anderson, A. Suzanne, R. Timmons. Ballistic performance of confined 99.5%-Al2O3 ceramic tiles, International Journal of Impact Engineering, 19 (2005) 703-713.

DOI: 10.1016/s0734-743x(97)00006-7

[18] C.E.Jr. Anderson, B.L. Morris. The ballistic performance of confined AL203 ceramic tiles, International Journal of Impact Engineering, 12 (1992) 167-187.

DOI: 10.1016/0734-743x(92)90395-a

[19] M. Vural, Z. Erim. Ballistic performance of alumina ceramic armours, the USA: Hawaii, (2001) 103-110.

[20] D.A. Shockey, A.H. Marchand, S.R. Skaggs, et al. Failure phnomenology of confined ceramics targets and impacting rods, International Journal of Impact Engineering, 9 (1990) 263-275.

DOI: 10.1016/0734-743x(90)90002-d