Experimental investigation into transverse crashworthiness of CFRP adhesively bonded joints in vehicle structure
Experimental investigation into transverse crashworthiness of CFRP adhesively bonded joints in vehicle structure
复制标题
汽车结构CFRP粘接接头横向耐撞性试验研究
DOI：
10.1016/j.compstruct.2013.07.009
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发表时间：
2013-12
影响因子：
6.3
通讯作者：
Qing Li
中科院分区：
文献类型：
--
作者：
Qiang Liu;Zhijian Zong;Guangyong Sun;Qing Li
本文旨在研究复合材料壁板在横向(离面)载荷作用下胶接接头的耐撞性。粘结体由平织碳纤维增强塑料(CFRP)复合材料制成，环氧胶HYSOL9432用于粘接。首先进行了三点弯曲试验，考察了重叠几何参数的影响，然后进行了冲击试验，探讨了不同冲击能量下的损伤过程。结果表明，在三点弯曲试验中，极限荷载和刚度均随搭接宽度和搭接长度的增加而增大，搭接宽度的影响更为显著。在低速冲击试验中，能量吸收和裂纹长度随着冲击能的增加而增大。结果表明，搭接宽度为20 mm、搭接长度为30 mm的节点在动态横向冲击下的极限载荷和吸收能量分别为725N和4.03J，分别是静力横向弯曲时的1.57倍和1.07倍。通过对试件破坏表面的微观观察，发现CFRP胶接接头的破坏模式为粘结断裂和粘结断裂混合破坏。
This paper aims to investigate the crashworthiness of adhesively bonded joints for composite panels under transverse (off-plane) loading. The adherends were made of plain weave carbon fiber reinforced plastics (CFRP) composites; and epoxy adhesive Hysol 9432 was used for bonding. The three point bending tests were conducted first to examine the influence of overlap geometrical parameters, and the impact tests were then carried out to explore the damage process under different impact energies. The results show that the ultimate load and stiffness increase with the increasing overlap width and length in the three point bending tests, and the influence caused by overlap width is more significant. The energy absorption and crack length increase as the impact energy increases in the low velocity impact tests. It is found that for the joint with 20 mm overlap width and 30 mm overlap length, the ultimate load and absorbed energy are 725 N and 4.03 J respectively under the dynamic transverse impact respectively, which are 1.57 times and 1.07 times higher than those under the static transverse bending. By observing micrographs of the failure surface of the specimens tested, the failure mode of CFRP adhesively bonded joints was mixing cohesive and adhesive fracture.
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DOI：
--
发表时间：
1957
期刊：
--
影响因子：
--
作者：
G. Irwin
通讯作者：
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DOI：
10.1016/j.ijadhadh.2011.04.006
发表时间：
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影响因子：
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影响因子：
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