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Toward Ambient Armor: Can New Materials Change Longstanding Concepts of Projectile Protection?
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2016-01-12 , DOI: 10.1002/adfm.201503915
Pingwei Liu 1 , Michael S. Strano 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2016-01-12 , DOI: 10.1002/adfm.201503915
Pingwei Liu 1 , Michael S. Strano 1
Affiliation
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Materials that protect against the high strain rate loading of a projectile have traditionally been constrained by their use on the target of protection. Here the possibility of new materials, particularly carbon nanocomposites, are explored for projectile protection removed off of the target and placed along the trajectory at an intermediate location. A mathematical model of such Ambient Armor (AA) separates the impact, capture, and energy dissipation of an incident projectile into each of three stages, respectively. A distinct scaling of the projectile to composite area ratio and areal density ratio is derived for a given requisite stopping distance. As an example, the model predicts that a 1 g and 800 m s21 small projectile could be decelerated to 3 m s21 within 6–9 m using a 2.34 3 104 layer monolayer graphene nanocomposite at 0.02 volume fraction. For larger projectiles with higher kinetic energy, a tandem system using a second composite body with the specified area density is explored with the idea of making the projectile gyroscopically unstable for rapid deceleration and subsequent interception. Off target reinforcement or AA may in general allow for the exploration of a broader range of material properties for projectile protection.
中文翻译:
迈向环境装甲:新材料能否改变射弹防护的长期观念?
传统上,防止弹丸承受高应变率载荷的材料受到其在保护目标上的使用的限制。在这里,探索了新材料,特别是碳纳米复合材料的可能性,以用于从目标上移开并沿弹道放置在中间位置的射弹防护。这种环境装甲(AA)的数学模型将入射弹丸的撞击,捕获和能量耗散分别分为三个阶段。对于给定的必要停止距离,可得出弹丸与复合材料面积比和面密度比的不同比例。例如,模型预测1 g和800 ms 21的小弹丸可以减速到3 ms 21使用0.02体积分数的2.34 3 10 4层单层石墨烯纳米复合材料在6–9 m之内。对于具有较高动能的较大弹丸,探索了使用具有指定面积密度的第二复合体的串联系统,其构想是使弹丸在陀螺仪上不稳定,以实现快速减速和随后的拦截。脱靶增强材料或AA通常可允许探索更广泛的材料特性以保护弹丸。
更新日期:2016-01-12
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
迈向环境装甲:新材料能否改变射弹防护的长期观念?
传统上,防止弹丸承受高应变率载荷的材料受到其在保护目标上的使用的限制。在这里,探索了新材料,特别是碳纳米复合材料的可能性,以用于从目标上移开并沿弹道放置在中间位置的射弹防护。这种环境装甲(AA)的数学模型将入射弹丸的撞击,捕获和能量耗散分别分为三个阶段。对于给定的必要停止距离,可得出弹丸与复合材料面积比和面密度比的不同比例。例如,模型预测1 g和800 ms 21的小弹丸可以减速到3 ms 21使用0.02体积分数的2.34 3 10 4层单层石墨烯纳米复合材料在6–9 m之内。对于具有较高动能的较大弹丸,探索了使用具有指定面积密度的第二复合体的串联系统,其构想是使弹丸在陀螺仪上不稳定,以实现快速减速和随后的拦截。脱靶增强材料或AA通常可允许探索更广泛的材料特性以保护弹丸。