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EXPERIMENTAL INVESTIGATION ON PENETRATION OF MASONRY WALL BY LARGE CALIBER RIFLE BULLET

Jin-Ming Li, Wen-Min Yan, Shu Wang, Da-Bin Lu, Rui-Min Mai

Abstract


To study the law of penetration action of small high-speed projectiles into the wall, three kinds of large caliber rifle projectiles were used to conduct armor penetration tests on the masonry walls, in which a mortar layer was applied inside and outside of the masonry wall, and the masonry was clay bricks and autoclaved aerated concrete blocks, respectively. High-speed photography of the impact velocity, residual velocity and motion attitude of the projectile, damage pattern, size and penetration process of the target body were obtained. Through the analysis of the kinetic energy loss ratio of the projectile and the wall penetration, it was revealed that the penetration effect of the projectile is mainly determined by the core structure (the single mass projectile is considered as the full core structure), the anti-penetration effect of the masonry wall mainly depends on the strength of the block itself, the anti-penetration effect of the lightweight masonry wall is weak, and the projectile penetrates more easily, the anti-penetration effect of the clay brick wall is the strongest, and also discovered the penetration depends on the thickness of the wall and the location of the projectile impact point. The results of the test and analysis can provide a basis for how to improve the lethality of light weapons against human targets behind the protection of brick walls.


DOI
10.12783/ballistics22/36189

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