Orthogonal experimental design and analysis of UHMWPE bulletproof composite

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Journal of Vibration and Shock ›› 2023, Vol. 42 ›› Issue (8) : 104-110.

ZHAO Yufen1，TIAN Ge1，WANG Yizhen1，SONG Leilei1，QI Changjian1,2

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Abstract

The ply scheme and molding process are important factors affecting the ballistic protection performance of ultra-high molecular weight polyethylene (UHMWPE) fiber composites. In order to evaluate influences of the factors on the bulletproof performance of UHMWPE fiber composites, a four-factor and three-level orthogonal table of ply orientation angle and three hot pressing process conditions including temperature, pressure, time was established based on the orthogonal test design, and 9 groups of ballistic limit experiments were carried out. The range and variance analysis of the experiment results show that the effect sequences of experimental factors on ballistic protection from strength to weakness were as follows: ply orientation angle, molding time, molding pressure and molding temperature. In addition, it is found that the ballistic impact energy absorption of [(0°/90°)2]2n and [(-45°/+45°)2]2n laminated composites was reflected in the cooperative energy consumption of multiple failure modes, while the ballistic impact energy absorption of [(0°/90°)2/(-45°/+45°)2]n quasi isotropic laminated composites was reflected in the energy consumption of single failure mode. Finally, considering the bulletproof performance and cost, the optimal combination was determined as follows: forming temperature of 120 ℃, pressure of 25MPa, time of 20min and ply angle of [(0°/90°)2]2n.

Key words

UHMWPE fiber / Bulletproof composite, Orthogonal experimental, Ply orientation angle, Hot pressing process, Ballistic limit velocity

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ZHAO Yufen1，TIAN Ge1，WANG Yizhen1，SONG Leilei1，QI Changjian1,2. Orthogonal experimental design and analysis of UHMWPE bulletproof composite[J]. Journal of Vibration and Shock, 2023, 42(8): 104-110

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