Journal article

Analytical and numerical investigation of polyurea layered aluminium plates subjected to high velocity projectile impact

Damith Mohotti, Tuan Ngo, Sudharshan N Raman, Priyan Mendis

Materials & Design | ELSEVIER SCI LTD | Published : 2015

Abstract

This paper discusses on the penetration of high velocity projectiles through aluminium-polyurea composite layered plate systems. An analytical model has been proposed to predict the residual velocity of aluminium-polyurea composite plates, and validated with both experimental and numerical investigations. Full metal jacket (FMJ) projectiles (5.56 mm × 45 mm), corresponding to NATO standard SS109, were fired at the aluminium-polyurea composite layered plate systems from a distance of 10.0 m at a fixed velocity of 945 m/s. Four different composite plate configurations were used with thicknesses varying from 16 to 34. mm. Each configuration consisted of six specimens. Residual velocities for ea..

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Grants

Awarded by Defence Materials Technology Centre (DMTC) Australia


Funding Acknowledgements

This research was financially supported by the Defence Materials Technology Centre (DMTC) Australia under the Project 3.1/3.4 (Armour materials). The authors would like to acknowledge the support received from the DMTC throughout the project. In addition, the authors acknowledge the invaluable contribution by Era Polymers Pty Ltd. (Australia) by supplying their commercial product Eraspray ESU630D (R) (polyurea) for conducting this study. In addition, the assistance provided by Robert Christopher and Phil Christopher during the ballistic test program is also duly acknowledged.