This work investigates the effect of hybridization and stacking sequence on the ballistic impact response of S2-glass/aramid/epoxy laminates. Different laminates were manufactured by vacuum infusion, one with only aramid fabrics (12 layers, K₁₂), two with only S2-glass fabrics (12 or 18 layers, Gl₁₂ and Gl₁₈) and five interply hybrids (Gl₃K₉, [GlK]₆, K₆Gl₆, Gl₆K₆, Gl₉K₃). Ballistic tests were performed according to EN1522- FB3, with the .357 Magnum FMJ projectile. The ballistic curves were determined to obtain the ballistic limit velocity (V_BL), and in-plane damage area and through-the-thickness damage were analyzed. For the impact at 430 m/s, all laminates were perforated, and the Gl₁₈ exhibited greater specific absorbed energy (26.6 J.m²/kg), with lower thickness and in-plane damage than the K₁₂ (22.6 J.m²/kg) with a similar areal density (≈0.77 g/cm²). No significant differences in ballistic limits (pairing effect) were observed for the [GlK]₆, Gl₆K₆ and K₆Gl₆ hybrids, and the Gl₃K₉ hybrid exhibited a positive hybrid effect. The areal density of laminates has shown a great influence on the final ballistic response. The results have shown that hybridization of aramid composites with S2-glass may enhance the impact absorption capability of hard composite armors, however, the ballistic limit velocity, which is a crucial parameter to assess ballistic shield performance, reduced.

这项工作研究了杂化和堆叠顺序对 S2 玻璃/芳纶/环氧树脂层压板的弹道冲击响应的影响。不同的层压板是通过真空灌注制造的，一种只有芳纶织物（12 层，K ₁₂），两种只有 S2 玻璃织物（12 或 18 层，Gl ₁₂和 GL ₁₈）和五种夹层混合（Gl ₃ K ₉， [GlK] ₆ , K ₆ Gl ₆ , Gl ₆ K ₆ , GL ₉ K ₃）。弹道测试根据 EN1522-FB3 使用 .357 Magnum FMJ 弹丸进行。确定弹道曲线以获得弹道极限速度（V _BL），并分析面内损伤区域和穿过厚度的损伤。对于 430 m/s 的冲击，所有层压板都穿孔，与K ₁₂ (22.6 Jm ² /kg)相比，Gl ₁₈表现出更大的比吸收能 (26.6 Jm ² /kg)，具有更小的厚度和面内损伤具有相似的面密度 (≈0.77 g/cm ² )。[GlK] ₆、Gl ₆ K ₆和 K 的弹道极限（配对效应）未观察到显着差异₆ GI ₆杂种和 GI ₃ K ₉杂种表现出积极的杂种效果。层压板的面密度对最终弹道响应有很大影响。结果表明，芳纶复合材料与 S2 玻璃的混合可以提高硬复合装甲的冲击吸收能力，但是，作为评估弹道盾牌性能的关键参数的弹道极限速度降低。