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Experimental
analysis of oblique ballistic impacts on Kevlar and steel
plates from a blunt-nosed hollow projectile
Wei Xu, Tao Zhang, Xin Liu, Zhen Li, Yushan Liu and Zhicheng Leng |
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Vol. 19 (2024), No. 4, 729–746
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Abstract |
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We study the ballistic resistance of layered combinations of Kevlar and steel plates subjected to blunt-nosed hollow projectile at different speeds. Ballistic experiments are carried out to investigate the impact resistance of Kevlar and steel plates. Four kinds of target are designed with identical areal density, namely steel plate, Kevlar plate, Kevlar-steel and steel-Kevlar plate. The Kevlar-steel plate consists of a front Kevlar plate and a steel backing plate while the steel-Kevlar plate consists of a front steel plate and a rear Kevlar plate. Damage modes are examined and energy absorption characteristics are analyzed. The effect of structural configuration on impact resistance is discussed. It is found that asymmetrical inward deformation at the projectile tip is observed and the dynamic response of the target is also not completely symmetric under oblique impact. The steel plate shows overall asymmetric dishing deformation with shearing failure around the projectile hole. The damage mode of the Kevlar plate is global dishing deformation with local sheering and tensile failure. For the Kevlar-steel plate, the damage mode of front Kevlar is similar to that of the single Kevlar while petal failure together with dishing deformation is observed in the rear steel plate. For the steel-Kevlar plate, the front steel plate shows shearing failure and the damage of back Kevlar is identical to that of single Kevlar. When the areal density is identical, the Kevlar plate has the highest ballistic limit and energy absorbing capability while the steel plate shows lowest ballistic resistance. For the Kevlar and steel combinations, the impact resistance of a steel-Kevlar plate is better than that of a Kevlar-steel plate in the velocity regime. |
Keywords
ballistic resistance, oblique impact, structural
configuration, Kevlar, damage mode
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Milestones
Received: 20 February 2024
Revised: 14 July 2024
Accepted: 31 July 2024
Published: 27 September 2024
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Authors |
| Wei Xu | |
| Naval Research Institute Beijing China |
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| Tao Zhang | |
| Naval Research Institute Beijing China |
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| Xin Liu | |
| Naval Research Institute Beijing China |
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| Zhen Li | |
| Naval Research Institute Beijing China |
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| Yushan Liu | |
| Naval Research Institute Beijing China |
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| Zhicheng Leng | |
| Naval Research Institute Beijing China |
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| © 2024 The Author(s), under exclusive license to MSP (Mathematical Sciences Publishers). |
