Experimental Investigation on Reactive Fragment Impact Damage to UAV Equivalent Composite Target

WANG Luyao; LI Mei; ZHOU Xin; MEN Jianbing

doi:10.19554/j.cnki.1001-3563.2026.03.029

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (3) : 273-282. DOI: 10.19554/j.cnki.1001-3563.2026.03.029

Defense Equipment

Experimental Investigation on Reactive Fragment Impact Damage to UAV Equivalent Composite Target

WANG Luyao¹, LI Mei^2,*, ZHOU Xin², MEN Jianbing²

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Abstract

The work aims to investigate the synergistic damage mechanism of active fragments against drones and its dependence on target structural parameters. The drone's "skin-frame" structure was modeled as a CFRP/LY12 aluminum double-layer spaced target. Active fragments were launched via a ballistic gun at 1 540 ± 80 m/s to impact targets with varying thickness combinations (CFRP: 3, 6 mm; LY12 aluminum: 1, 3, 4 mm). Combining high-speed photography with damage morphology analysis, the response behavior and damage mechanism were studied. Results showed that the failure mode of CFRP targets depended on thickness, that for 3 mm targets was shear failure, while that for 6 mm targets was backside tensile failure. Although no energy release occurred during CFRP penetration, the active fragments produced a reactive cloud that ignited upon secondary impact with the aluminum layer, causing significantly greater damage than inert fragments. As aluminum thickness increased to 4 mm, fragment penetration was limited, confining combustion between layers and extending the burn duration and the fire zone. The reactive fragments achieve efficient damage to the composite structures of drones through the enhanced destructive effect of "kinetic energy penetration + chemical energy release + dynamic tearing". The thickness matching relationship of the drone target directly affects the damage mode and energy release process. These findings provide valuable insights for the design of optimized anti-drone warheads.

Key words

reactive fragment / energy release behavior / high-temperature damage zone / damage effect / CFRP target / composite target

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WANG Luyao, LI Mei, ZHOU Xin, MEN Jianbing. Experimental Investigation on Reactive Fragment Impact Damage to UAV Equivalent Composite Target[J]. Packaging Engineering. 2026, 47(3): 273-282 https://doi.org/10.19554/j.cnki.1001-3563.2026.03.029

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