Methodology to Measure the Protective Areal Density of Ceramic Tiles Against Projectile Impact

Authors

  • S. G. Savio Defence Metallurgical Research Laboratory, Hyderabad - 500 058, India
  • V. Madhu Defence Metallurgical Research Laboratory, Hyderabad - 500 058, India

DOI:

https://doi.org/10.14429/dsj.68.11136

Keywords:

Ballistic testing, Protective areal density, Armour ceramic, Logistic regression analysis, Binomial data analysis

Abstract

The protective areal density of any armour material is the important property required for armour design. In this study, ballistic performance of hot pressed boron carbide tiles, with a tile thickness of 12.2 mm, was evaluated using the protective areal density (PAD) test method, against hard steel 12.7 mm armour piercing (AP) projectiles. The binary response data on complete penetration/ partial penetration obtained from PAD testing was fitted with the standard logistic regression model. A detailed discussion on statistical procedure has been presented. The PAD (pp = 0.5) was estimated to be 82.5 kg/m2 and the lower and upper bounds of 95 per cent confidence interval for (PAD) (pp = 0.5) was found to lie between 79.5 kg/m2 and 85.0 kg/m2.

Author Biographies

S. G. Savio, Defence Metallurgical Research Laboratory, Hyderabad - 500 058, India

Mr S.G. Savio, obtained his MTech (Ceramic Technology) from Anna University, Chennai, in 2000. Currently, working as Scientist E in Defence Metallurgical Research Laboratory (DMRL), Hyderabad. His areas of research interest are in the development, characterisation, ballistic evaluation, high strain rate studies, modelling and simulation of ceramic armour materials.

In the current study, he has contributed towards design of experiments, writing of R-program code and statistical analysis.

V. Madhu, Defence Metallurgical Research Laboratory, Hyderabad - 500 058, India

Dr Vemuri Madhu, did his PhD in Applied Mechanics, from Indian Institute of Technology Delhi (IITD), New Delhi, in 1993. Currently, he is the Head of the Armour Technology Center at the Defence Metallurgical Research Laboratory (DMRL), Hyderabad. His areas of research interest are on the development of ceramic/composite armour materials and systems for various types of protective applications, high strain rate evaluation of materials, shock and blast mitigation studies on armour materials, constitutive modelling and simulation of high velocity dynamic impacts. He is a recipient of the DRDO Scientist of the Year award 2016, Laboratory Technology Group Award 2013, DRDO Performance Excellence Award in 2008 (as a team member), Laboratory Scientist of the year Award in 2006 and National Technology Day Award in 2003. He has more than 100 research papers and technical reports to his credit. 

In the current study, he has contributed towards material selection and analysis of experimental data.

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Published

2017-12-18

How to Cite

Savio, S. G., & Madhu, V. (2017). Methodology to Measure the Protective Areal Density of Ceramic Tiles Against Projectile Impact. Defence Science Journal, 68(1), 76–82. https://doi.org/10.14429/dsj.68.11136

Issue

Vol. 68 No. 1: Commemorative Issue on DRDO@60

Section

Commemorative Issue - DRDO

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