Microscopic void distribution of 3D printed polymer composites with different printing direction

被引：11
作者：
Liao, Binbin [1 ,2 ]
Yang, Haoming [3 ]
Ye, Binghang [2 ]
Xi, Li [1 ,4 ]
机构：
[1] Zhejiang Univ, Inst Proc Equipment, Hangzhou 310027, Peoples R China
[2] Zhejiang Univ, Hainan Inst, Sanya 572000, Peoples R China
[3] Huazhong Univ Sci & Technol, Sch Aerosp Engn, Wuhan 430063, Peoples R China
[4] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 341卷
基金：
中国国家自然科学基金;
关键词：
3D printing; Composite materials; Microstructure; Compressive resistance;
D O I：
10.1016/j.matlet.2023.134236
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microscopic void distribution of 3D printed short fiber reinforced polymer composites with different printing direction was studied in this paper. The internal voids including the independent voids and connected voids were quantitatively counted by high-resolution X-ray micro-computed tomography (mu CT) method. After the CT scan, the specimens were subjected to compression tests. Experimental results showed that the void volume of the specimens with the 0 degrees printing direction was much higher than that with 45 degrees/-45 degrees and 0 degrees/90 degrees printing di-rections, and the connected voids were dominant. By comparison, the out-of-plane compressive resistance of 0 degrees printed specimen was lower than that of the other two printing directions because of higher proportion of internal voids.
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页数：4
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