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ORIGINAL RESEARCH article

Front. Mech. Eng.
Sec. Solid and Structural Mechanics
Volume 10 - 2024 | doi: 10.3389/fmech.2024.1419210
This article is part of the Research Topic Technical Briefs in Mechanical Engineering: Advances and Innovations View all 5 articles

Analysis of the thickness of layered armor to provide protection against 7.62 mm ball projectiles using experimental and numerical methods

Provisionally accepted
Sachin Salunkhe Sachin Salunkhe 1*Divyanshu S. Morghode Divyanshu S. Morghode 2D G. Thakur D G. Thakur 2Lenka Cepova Lenka Cepova 3Emad Abouel Nasr Emad Abouel Nasr 4
  • 1 Gazi University, Ankara, Türkiye
  • 2 Defence Institute of Advanced Technology (DIAT), Pune, Maharashtra, India
  • 3 IT4Innovations, VSB-Technical University of Ostrava, Ostrava, Czechia
  • 4 King Saud University, Riyadh, Riyadh, Saudi Arabia

The final, formatted version of the article will be published soon.

    The layered configuration of different material plates is one of the ways of achieving protection against different kinds of kinetic energy ammunitions. The thickness of each plate is one of the most important influencing parameters to prevent the penetration of the projectile. In the present study, a layered configuration of the Al2O3 and Al 7075-T651 is analysed, to prevent the perforation of 7.62 mm Lead core projectile, under normal impact conditions, by using LS-DYNA numerical simulations. Experiments were conducted on Al 7075-T651 plate and Numerical model was validated with experiment results. To achieve the objective, the validated numerical model was used to investigate influence on various Al2O3 and Al 7075-T651 combinations. Three factors led to the selection of Al 7075-T561 and Al2O3 as the target materials. First, the literature review revealed that these materials have already been employed in the construction of armour. Second, Al2O3 is a brittle material whereas Al 7075-T651 is ductile. Consequently, when combined in a layered arrangement, these materials offer the ideal destroyer-absorber arrangement. Thirdly, these materials have lower densities than steel. As a result, these materials offer a lightweight alternative for lead core 7.62 mm bullet defense. From the analysis, it is observed that two layered configurations were found to be effective in the prevention of bullet perforation: a front plate of Al2O3 that was 10 mm thick and had a rear plate of Al 7075-T651 that was 06 mm thick, and a front plate of Al2O3 that was 04 mm thick and had a 12 mm thick layer of Al 7075-T651.

    Keywords: FEA, impact, Al2O3, Al 7075-T651, 7.62 mm Ball Projectile. Nomenclature V0 -Muzzle velocity Dx1 -Distance between weapon and Target Tx1 -Time of Bullet travel before impact Vx1 -Impact Velocity

    Received: 17 Apr 2024; Accepted: 19 Jun 2024.

    Copyright: © 2024 Salunkhe, Morghode, Thakur, Cepova and Abouel Nasr. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Sachin Salunkhe, Gazi University, Ankara, Türkiye

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