极小曲面Al2O3/Al复合材料的压缩断裂行为研究
Compression Fracture Study of Triply Periodic Minimal Surface Al2O3/Al Composites
胡琳杰 1陆萍 2张福隆 1钱凯 1刘双宇1
作者信息
- 1. 盐城工学院机械工程学院,江苏盐城 224051
- 2. 盐城工学院汽车工程学院,江苏盐城 224051
- 折叠
摘要
通过光固化3D打印技术制备三维网络蜂窝结构和TPMS结构陶瓷骨架,采用无压金属熔渗方法将金属填充在骨架内并成功制备三维连续网络互穿Al2O3/Al复合材料.研究2种结构的Al2O3/Al复合材料的压缩断裂行为和主要断裂机制.结果表明,三周期极小曲面(triply periodic minimal surface,TPMS)结构Al2O3/Al复合材料的极限抗压强度和吸能分别为260.64 MPa和791.19 kJ/m3,分别是蜂窝结构的4.8倍和15.5倍.研究发现,复合材料受压破坏是由韧性和脆性断裂组成的混合断裂,所以三周期极小曲面(TPMS)结构复合材料因其平滑且规则的拓扑结构,能很好地分解应力和传递负荷,具有更高的强度和延展性,进而有更广阔的应用前景.
Abstract
In this paper,three-dimensional network cellular structure and TPMS structure ceramic skeleton were prepared by light curing 3D printing technology.The metal was filled in the skeleton by no pressure metal fusion method,and the Al2O3/Al composite material of 3D continuous network was successfully prepared.The compression fracture behaviors and main fracture mechanisms of the two structured composites were investigated.The results show that the ultimate compressive strength and energy absorption of the TPMS composite are 260.64 MPa and 791.19 kJ/m3,which are 4.8 times and 15.5 times of that of the honeycomb structure,respectively.Analysis reveals that composite compression failure entails a combination of toughness and brittle fractures.The TPMS structural composite effectively redistributes stress and transfers loads owing to its smooth and regular topology,thus offering enhanced strength and ductility,with promising applications.
关键词
紫外光固化Al2O3浆料/三周期极小曲面/Al2O3/Al复合材料Key words
UV-curable alumina suspensions/triply periodic minimal surface/Al2O3/Al composites引用本文复制引用
出版年
2024
NETL
NSTL
万方数据