Research on the Ballistic Performance of Hybrid Structural Composites

doi:10.12382/bgxb.2022.0456

Abstract

Abstract: In order to explore the influence of different hybrid structures on ballistic performance, according to the mechanical properties of aramid Ⅱ and aramid Ⅲ fibers, 7 kinds of composite materials with different hybrid ratios were designed and prepared, and each hybrid ratio had two layering sequences, i.e. aramid Ⅲ as a bullet-facing surface or a back surface. 1.1 g standard stimulating fragments and 51-type 7.62 mm lead-cored bullets were used to test the performance of composite materials with different hybrid structures, the effects of layup sequence and hybrid ratio, etc. on such as the impact resistance and the ballistic performance were studied. The results show that: under low-speed impact, with the increase of the content of aramid Ⅲ composite material, the maximum load time of the composite material of the hybrid structure decreases gradually, indicating that the aramid Ⅲ can absorb more energy during the same period of time; the aramid Ⅲ composite material is a bullet-facing surface or a back surface, and the ballistic limit v₅₀ thereof increases with the increase of the aramid Ⅲ content, the trend is that the v₅₀ at the beginning increase faster, and when the content of aramid Ⅲ exceeds 30wt%, the v₅₀ increases significantly slower. When the content of aramid Ⅲ exceeds 70wt%, the v₅₀ does not increase significantly. When the aramid Ⅲ composite material is located on the bullet-facing surface, the v₅₀ of the composite material of the hybrid structure is higher, and this phenomenon is most obvious when the content of the aramid Ⅲ composite material is 30wt% to 70wt%. Meanwhile, the increase in the content of the aramid Ⅲ composite material is beneficial to reduce the deformation of the bulletproof helmet after being shot.

Key words: hybridstructure, compositematerials, aramidⅢ, layingsequence, ballisticperformance

CLC Number:

TQ325.12

LI Weiping, LONG Zhizhou, CHEN Junxian, ZHANG Hua, MA Tian. Research on the Ballistic Performance of Hybrid Structural Composites[J]. Acta Armamentarii, 2022, 43(9): 2136-2142.

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第43卷第9期2022 年9月
兵工学报ACTA ARMAMENTARII
Vol.43No.9Sep.2022

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