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Flexural deformation behavior of carbon fiber reinforced aluminium hybrid foam sandwich structure
Composites Part B: Engineering ( IF 13.1 ) Pub Date : 2019-12-18 , DOI: 10.1016/j.compositesb.2019.107729
Ashutosh Pandey , Dilip Muchhala , Rajeev Kumar , Sriram S , A.N. Ch Venkat , D.P. Mondal

Aluminium hybrid foam (HF) core sandwich structures with carbon fiber-cold setting resin as face sheets have been made. The flexural properties and energy absorption of these sandwich structures have been analyzed through three-point bending (3 PB) test. It is found that with the use of a double-layer carbon fiber sheet, the flexural load carrying capacity of the sandwich structure increases up to eight times as compared to that of bare foam (BF) structure. Whereas, the bending stiffness of the structure is nine times to that of BFs and energy absorption is 58% more than that of BF. It is also found that with the increase in foam core thickness the flexural load carrying capacity, bending stiffness and energy absorption capacity of the sandwich structure increases significantly. The specific strength and bending stiffness increase as compared to that of face sheet due to the addition of foam at the core. The deformation behavior of different sandwich structures was analyzed to investigate the different modes of failure during bending.



中文翻译:

碳纤维增强铝复合泡沫夹层结构的挠曲变形行为

已经制成了以碳纤维冷固树脂为面板的铝杂泡沫(HF)芯夹层结构。通过三点弯曲(3 PB)测试分析了这些夹层结构的弯曲特性和能量吸收。发现使用双层碳纤维片,与裸泡沫(BF)结构相比,夹层结构的挠曲承载能力增加了八倍。而结构的弯曲刚度是高炉的9倍,能量吸收比高炉高58%。还发现,随着泡沫芯厚度的增加,夹层结构的挠曲载荷承载能力,弯曲刚度和能量吸收能力显着增加。与面板相比,由于在芯部添加了泡沫,因此比强度和弯曲刚度增加。分析了不同夹层结构的变形行为,以研究弯曲过程中的不同破坏模式。

更新日期:2019-12-18
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