Low-Velocity Impact Properties of Sandwich Structures with Aluminum Foam Cores and CFRP Face Sheets
Low-Velocity Impact Properties of Sandwich Structures with Aluminum Foam Cores and CFRP Face Sheets
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DOI：
10.3390/jcs2020024
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发表时间：
2018-04
影响因子：
3.9
通讯作者：
P. Rupp;J. Imhoff;K. Weidenmann
中科院分区：
文献类型：
--
作者：
P. Rupp;J. Imhoff;K. Weidenmann
在此基础上，研究了夹层结构的低速冲击性能。夹层结构由各种设置的碳纤维增强聚合物（CFRP）面板和不同的芯结构组成，包括开孔和闭孔泡沫铝。面板的基质是发泡聚氨酯，其也用作将面板连接到芯的粘合剂。低速压痕试验进行了多种三明治配置。压痕行为进一步研究了额外的准静态压痕试验，并在原位压痕试验顺序记录的X射线计算机断层扫描。低速压痕试验和准静态试验都得到了试样下表面数字图像相关测量的支持。文献中对不同材料组合的夹层结构的整体压入行为的描述是一致的。确定并详细描述了各夹层结构参数对压痕行为的影响。
Within this contribution, the low-velocity impact behavior of sandwich structures was investigated. The sandwich structures consisted of carbon fiber reinforced polymer (CFRP) face sheets in various setups, and different core structures, including an open-cell and a closed-cell aluminum foam. The matrix of the face sheets was foamed polyurethane, which also acts as the adhesive connecting the face sheets to the core. Low-velocity indentation tests were carried out with multiple sandwich configurations. The indentation behavior was further examined by additional quasi-static indentation tests, and in situ indentation tests sequentially recorded by X-ray computed tomography. Both the low velocity indentation tests and the quasi-static tests were supported by digital image correlation measurements of the lower specimen surfaces. The overall indentation behavior was described consistently to sandwich structures with different material combinations in literature. The influence of each sandwich configuration parameter on the indentation behavior was determined and described in detail.