纤维增强复合材料三明治板的破片穿甲实验

研究了钢板-纤维增强复合材料板-钢板构成的三明治结构对破片的防护性能。通过破片模拟弹丸(FSP)高速撞击不同结构三明治板实验, 获得FSP弹丸贯穿16种三明治板的弹道极限, 分析结构特征对纤维增强复合材料三明治板比吸收能的影响。结果表明, 叠层芳纶、玻纤基三明治板较单层结构三明治板比吸收能分别提高了8.31%和16.09%, 8 mm面板+8 mm夹层+6 mm背板芳纶、玻纤基三明治板较4 mm面板+8 mm夹层+10 mm背板的芳纶、玻纤基三明治板比吸收能分别提高了37.72%和25.35%; 芳纶、玻纤基三明治板的比吸收能均随复合材料夹层厚度的增加呈指数递增, 夹层基板的抗拉性能是影响三明治板比吸收能的重要因素; 同面密度下, 厚面板、薄背板及多层叠合夹层结构的三明治板具有更高的比吸收能。

Armor-piercing experimental on fragment against sandwich plate with fiber reinforced composite cores

The defense performance of sandwich structure on steel plate-fiber composite material plate-steel plate structure against fragment was investigated. By the experiment on the fragment simulation projectile (FSP) impacted to different kinds of sandwich plate with high velocity, the ballistic limits of fragment pierced 16 kinds of sandwich plates were obtained; base on above, aimed to the specific energy absorption of this sandwich plate, the influence factor of structure characteristic was analyzed, the results show that the specific energy absorption of laminated sandwich structure on aramid and glass fiber is higher by 8.31% and 16.09% than a single-layer structure, respectively; the specific energy absorption of the structure of 8mm front and 8mm core and 6mm back on aramid and glass fiber is higher by 37.72% and 25.35% than the one of 4mm front and 8mm core and 10mm back , respectively. the research shows that specific energy absorption of sandwich plate is exponential increase with the thickness of fiber composite sandwich; the tensile properties of middle layer plate is a importance factor for the specific energy absorption of this sandwich plate; at the same areal density, the specific energy absorption of this sandwich plate can be significantly improved by adopting thicker faceplate, thinner backboard and laminated structure for middle layer.