Abstract
The protective capability of the Kevlar fibre-reinforced rubber composite armour (KFRRCA) at different obliquities is studied using depth-of-penetration experiments method against a 56 mm-diameter standard-shaped charge. Efficiency factors are calculated to evaluate the protection capability of the KFRRCA at different obliquities. Meanwhile, an X-ray experiment is used to observe the deformation, fracture, and scatter of the shaped-charge jet as it penetrates the composite armour. Finally, scanning electron microscopy (SEM) is used to analyse the effect of the Kevlar fibre-reinforced rubber for the composite armour to resist jet penetration. The results showed that the KFEECA can be used as additional armour, because it has excellent protection capability, and it can disturb the stability of the middle part of the shaped charge jet (SCJ) obviously especially when the armour at 30°and 68° obliquities.
Highlights
Shaped-charge jet (SCJ) is one of the most important components in armour weaponry that exhibits excellent penetration performance and can damage armoured targets effectively
Zu et al / Performance of kevlar fibre-reinforced rubber composite armour against shaped-charge jet penetration affect the normal operation of the vehicle parts and the explosion products may injure the soldiers around the armoured vehicles
Comparing the craters caused by SCJ penetration of the witness target, the Kevlar fibre-reinforced rubber composite armour (KFRRCA) disturbed the shaped-charge jet stability, and part of the SCJ fragmented and scattered
Summary
Shaped-charge jet (SCJ) is one of the most important components in armour weaponry that exhibits excellent penetration performance and can damage armoured targets effectively. Zu et al / Performance of kevlar fibre-reinforced rubber composite armour against shaped-charge jet penetration affect the normal operation of the vehicle parts and the explosion products may injure the soldiers around the armoured vehicles. The bulging armour can disturb the stability of the SCJ, and it has excellent resistance to penetration performance, so it has been widely used in the protective field of armoured vehicles, ships, and aerospace. The effects of rubber layer thickness and obliquity of the armour for the composite armour anti-SCJ penetration were studied through theoretical, X-ray, and depth-of-penetration experiments by Zu et al (2013). In this paper, we study the protective performance of the KFRRCA in which the rubber base is doped with 15% Kevlar fibre at different obliquities through depth-of-penetration (DOP) experiments and X-ray experiment. The effect of the obliquity for the composite armour was investigated by the tip velocities of the SCJ, DOP, deformation of the armour, and the protection factors
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