Time-sequenced damage behavior of reactive projectile impacting double-layer plates

• Published in: Defence technology Vol. 27; pp. 263 - 272
• Main Authors: Yuan, Ying, Cai, Yi-qiang, Guo, Huan-guo, Chen, Peng-wan, Liu, Rui, Wang, Hai-fu
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2023; KeAi Communications Co., Ltd
• Subjects: Damage behaviors; Double-layer plates; Impact; Reactive projectile; Damage behaviors; Impact; Reactive projectile; Double-layer plates
• ISSN: 2214-9147; 2214-9147
• DOI: 10.1016/j.dt.2022.07.009

The time-sequenced damage behavior of the reactive projectile impacting double-layer plates is discussed. The analytical model considering the combined effect of kinetic and chemical energy is developed to reveal the damage mechanism. The influences of impact velocity and reactive projectile chemical characteristics on the damage effect are decoupled analyzed based on this model. These analyses indicate that the high energy releasing efficiency and fast reaction propagation velocity of the reactive projectile are conducive to enhancing the damage effect. The experiments with various reactive projectiles impact velocity increasing from 702 to 1385 m/s were conducted to verify this model. The experimental results presented that, the damage hole radius of the rear-plate increases with the increase of impact velocity. At the impact velocity of 1350 m/s, the radius of damage hole formed by PTFE/Al/Bi2O3, PTFE/Al/MoO3, PTFE/Al/Fe2O3 projectile on the rear-plate become smaller in sequence. These results are consistent with the analytical model prediction, demonstrating that this model can predict the damage effect quantitatively. This work is of constructive significance to the application of reactive projectiles. •An analytical model is developed to descript the time-sequenced damage behavior and predict the damage effect of reactive projectiles against double-layer plates.•With the energy release efficiency and the reaction propagation velocity increasing, the damage effect of the rear-plate is enhanced.•When the reactive projectiles impact the plates at a similar velocity, the radius of damage hole formed by PTFE/Al/Bi2O3, PTFE/Al/MoO3, PTFE/Al/Fe2O3 projectile on the rear-plate become smaller in sequence.