Impact Resistance of Composite Sandwich Plates
Impact Resistance of Composite Sandwich Plates
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DOI：
10.1177/073168448900800502
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发表时间：
1989-09
影响因子：
3.1
通讯作者：
M. Bernard;P. Lagacé
中科院分区：
文献类型：
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作者：
M. Bernard;P. Lagacé
对复合材料夹芯板的抗冲击性能进行了实验研究。几块采用 [±45/0] s Hercules AS4/3501-6 石墨/环氧树脂面板的面板采用不同类型的芯材制造：铝蜂窝、Nomex 蜂窝和 Rohacell 塑料泡沫，具有三种不同的芯材厚度：3.2 毫米、6.4 毫米和 9.6 毫米。这些面板在一系列低能量水平（低于 10 焦耳）下受到影响。拍摄 X 射线照片以确定分层损坏的程度，并对面板进行切片，以便确定分层、脱粘和芯损坏的位置和长度。样品中发现大面积分层和芯部损坏，但没有明显的表面损坏。 Rohacell 中的核心损坏由泡沫中的裂缝组成，而蜂窝中的损坏由细胞壁的弯曲组成。最大的分层出现在顶部面板的底部两层（-45°/+45°）之间的界面处。
The impact resistance of composite sandwich plates has been studied ex perimentally. Several panels with [±45/0] s Hercules AS4/3501-6 graphite/epoxy face- sheets were manufactured with different types of cores: aluminum honeycomb, Nomex honeycomb and Rohacell plastic foam with three different core thicknesses, 3.2 mm, 6.4 mm and 9.6 mm. These panels were impacted at a range of low energy levels (less than 10 joules). X-ray photos were taken to determine the extent of delamination damage, and the panels were sectioned so the location and lengths of delaminations, debonds, and core damage could be determined. Extensive delamination and core damage was found in spec imens with no visible surface damage. Core damage in the Rohacell consisted of cracks in the foam while the damage in the honeycomb consisted of the buckling of cell walls. The largest delaminations were found in the interface between the bottom two plies (-45°/+45°) of the top facesheet.