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Content available Buildability of Mortar Feedstock in Material Extrusion Additive Manufacturing
Park Jinsoo, Lee Hojae, Choi Hanshin
Archives of Metallurgy and Materials
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2020
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Vol. 65, iss. 3
1069--1072
EN
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.
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