期刊
APPLIED COMPOSITE MATERIALS
卷 28, 期 6, 页码 1899-1917出版社
SPRINGER
DOI: 10.1007/s10443-021-09946-3
关键词
Hybrid laminates; Interply hybrids; Aramid fibers; S2-glass fibers; Vacuum infusion; Ballistic tests
资金
- CNPq
- CAPES
This study investigates the effect of hybridization and stacking sequence on the ballistic impact response of S2-glass/aramid/epoxy laminates, showing that areal density, thickness, and damage area have a significant influence on the final ballistic response.
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, K-12), two with only S2-glass fabrics (12 or 18 layers, Gl(12) and Gl(18)) and five interply hybrids (Gl(3)K(9), [GlK](6), K(6)Gl(6), Gl(6)K(6), Gl(9)K(3)). 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 Gl(18) exhibited greater specific absorbed energy (26.6 J.m(2)/kg), with lower thickness and in-plane damage than the K-12 (22.6 J.m(2)/kg) with a similar areal density (approximate to 0.77 g/cm(2)). No significant differences in ballistic limits (pairing effect) were observed for the [GlK](6), Gl(6)K(6) and K(6)Gl(6) hybrids, and the Gl(3)K(9) 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.
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