BUILDABILITY OF MORTAR FEEDSTOCK IN MATERIAL EXTRUSION ADDITIVE MANUFACTURING

被引：0
|
作者：
Park, Jinsoo [1 ]
Lee, Hojae [2 ]
Choi, Hanshin [1 ]
机构：
[1] Korea Inst Ind Technol, Adv Mat & Proc R&D Grp, 156 Gaetbeol Ro, Incheon, South Korea
[2] Korea Inst Civil Engn & Bldg Technol, Goyang, South Korea
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2020年 / 65卷 / 03期
关键词：
additive manufacturing; mortar feedstock; shape retention ability; buildability; overlaying mode;
D O I：
10.24425/amm.2020.133219
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Mortar feedstock is extruded to form bead and it is selectively placed line by line in the material extrusion additive manufacturing. With respects to part building process healthiness, load-supporting ability of overlaid beads is emphasized as buildability. Buildability is primarily dependent on thixotropic properties of feedstock and vertical overlapping schedule. In the present study, water-to-binder (w/b) ratio was chosen as material aspect to assess buildability. Uneven bead shape evolution and premature failure were highlighted owing to low yield stress of high w/b ratio feedstock. Feedstock with optimum w/b ratio showed good buildability even at the interval time of 19 sec.
引用
收藏
页码：1069 / 1072
页数：4
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