Tailoring mechanical properties of P mu SL 3D-printed structures via size effect

Zhang, Wenqiang1,2; Ye, Haitao1,3; Feng, Xiaobin4; Zhou, Wenzhao2; Cao, Ke1,5; Li, Maoyuan1,6; Fan, Sufeng1,7; Lu, Yang1,2

2022-12-01

10.1088/2631-7990/ac93c2

International Journal of Extreme Manufacturing   影响因子和分区

2631-8644

2631-7990

Projection micro stereolithography (P mu SL) has emerged as a powerful three-dimensional (3D) printing technique for manufacturing polymer structures with micron-scale high resolution at high printing speed, which enables the production of customized 3D microlattices with feature sizes down to several microns. However, the mechanical properties of as-printed polymers were not systemically studied at the relevant length scales, especially when the feature sizes step into micron/sub-micron level, limiting its reliable performance prediction in micro/nanolattice and other metamaterial applications. In this work, we demonstrate that P mu SL-printed microfibers could become stronger and significantly more ductile with reduced size ranging from 20 mu m to 60 mu m, showing an obvious size-dependent mechanical behavior, in which the size decreases to 20 mu m with a fracture strain up to similar to 100% and fracture strength up to similar to 100 MPa. Such size effect enables the tailoring of the material strength and stiffness of P mu SL-printed microlattices over a broad range, allowing to fabricate the microlattice metamaterials with desired/tunable mechanical properties for various structural and functional applications.

3D printing projection micro-stereolithography (P mu SL) size effect microfiber mechanical properties microlattice metamaterial

SCI

英语

其他

Shenzhen Science and Technology Innovation Committee["JCYJ20170818103206501","202011033000145"] ; Changsha Municipal Science and Technology Bureau Project[kh2201035] ; City University of Hong Kong[9667226]

Engineering ; Materials Science

Engineering, Manufacturing ; Materials Science, Multidisciplinary

WOS:000863499900001

IOP Publishing Ltd

Web of Science

1.City Univ Hong Kong, Dept Mech Engn, Kowloon, Hong Kong 999077, Peoples R China
2.City Univ Hong Kong, Shenzhen Res Inst, Nanomfg Lab NML, Shenzhen 518057, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
4.Wuhan Univ Technol, Hubei Key Lab Theory & Applicat Adv Mat Mech, Wuhan 430070, Peoples R China
5.Xidian Univ, Sch Mechanoelect Engn, Xian 710071, Peoples R China
6.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China
7.Zhengzhou Univ, Sch Mech & Safety Engn, Zhengzhou 450001, Peoples R China

Zhang, Wenqiang,Ye, Haitao,Feng, Xiaobin,et al. Tailoring mechanical properties of P mu SL 3D-printed structures via size effect[J]. International Journal of Extreme Manufacturing,2022,4(4).

Zhang, Wenqiang.,Ye, Haitao.,Feng, Xiaobin.,Zhou, Wenzhao.,Cao, Ke.,...&Lu, Yang.(2022).Tailoring mechanical properties of P mu SL 3D-printed structures via size effect.International Journal of Extreme Manufacturing,4(4).

Zhang, Wenqiang,et al."Tailoring mechanical properties of P mu SL 3D-printed structures via size effect".International Journal of Extreme Manufacturing 4.4(2022).