Low velocity impact resistance of ceramic/polyurea composite plates: experimental study

被引：10
作者：
Xiao, Yihua [1 ,2 ]
Tang, Ziqiang [1 ]
Hong, Xiangfu [1 ]
机构：
[1] East China Jiaotong Univ, Sch Mechatron & Vehicle Engn, Nanchang 330013, Jiangxi, Peoples R China
[2] East China Jiaotong Univ, State Key Lab Performance Monitoring & Protecting, Nanchang 330013, Jiangxi, Peoples R China
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2021年 / 35卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Composite plate; Experiment; Low velocity impact; Polyurea; MECHANICAL-PROPERTIES; POLYUREA; DEFORMATION; BEHAVIOR;
D O I：
10.1007/s12206-021-1113-z
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Laminated and segmented ceramic/polyurea composite plates were fabricated by coating bulk ceramic plate and bonding ceramic tablets with polyurea, respectively. Also, nacre-like ceramic/polyurea composite plates, which mimic the "brick-mortar" structure of nacre, were fabricated by layering segmented ceramic/polyurea composite plates in a staggered way and bonding them with polyurea. Drop-weight impact tests were performed for the composite plates and corresponding bulk ceramic plates of similar size. The failure mode and low velocity impact resistance of the composite plates and the bulk ceramic plates were compared. The effects of polyurea on low velocity impact resistance of ceramic were analyzed. It is found that the laminated composite plate has much higher failure energy than the bulk ceramic plate due to the buffering effect of polyurea coating. The segmented composite plate has better multiple-impact resistance than the bulk ceramic plate, due to the crack arrest effect of polyurea filler between ceramic tablets. The nacre-like composite plate has better multiple-impact resistance compared with the bulk ceramic plate of similar thickness, since it can stop cracks propagating in plane and along thickness.
引用
收藏
页码：5425 / 5434
页数：10
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