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High Velocity Impact of Projectiles on Ceramic and Metal Dual Layer Target Panels

Published online by Cambridge University Press:  09 August 2012

C. S. Lin  and
Y. L. Chen
C. S. Lin
Affiliation:
Metallurgy Section, Materials & Electro-Optics Research Division, Chung-Shan Institute of Science and Technology, Taoyuan, Taiwan 32546, R.O.C.
Y. L. Chen*
Affiliation:
Department of Power Vehicle and Systems Engineering, Chung Cheng Institute of Technology, NDU Taoyuan, Taiwan 33448, R.O.C.
*
*Corresponding author ([email protected])
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Abstract

Cavity expansion theory has been widely adopted by many researches in predicting penetration depth of objects under impact. The main purpose of this paper is to construct two models, each comprising different damaged zones based on the cavity expansion theory, to predict the target resistance when regarding the dual-layer ceramic/aluminum panel with finite thickness under high velocity impact. Once the target resistance obtained, the modified Bernoulli equation T-A model was adopted to predict the residual velocities of the projectile after penetrating targets with different thickness combination. The residual velocities predicted by the two models were compared with the results from ballistic test using .30” AP projectile. It was found that the accuracy of the models depends mainly on the thickness of ceramic material, that is, different model is suitable to predict different thickness combination of dual layer target considered. The damaged phenomenon after test was also investigated and analyzed. Therefore, it is suggested that the damaged models constructed in this study could be applied to predict the energy absorption of dual layer panel with different combination and thickness, as long as consideration of the cavity expansion zones is adjusted.

Keywords

Cavity expansion theoryT-A modelResidual velocityAP projectile
Type
Articles
Information
Journal of Mechanics , Volume 28 , Issue 3 , September 2012 , pp. 499 - 506
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2012

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References

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