TY - JOUR
T1 - Additive Manufacturing of Three-Phase Syntactic Foams Containing Glass Microballoons and Air Pores
AU - Singh, Ashish Kumar
AU - Deptula, Alexander J.
AU - Anawal, Rajesh
AU - Doddamani, Mrityunjay
AU - Gupta, Nikhil
N1 - Publisher Copyright:
© 2019, The Minerals, Metals & Materials Society.
PY - 2019/4/15
Y1 - 2019/4/15
N2 - High-density polyethylene and its syntactic foams reinforced with 20 vol.% and 40 vol.% glass microballoons were 3D printed using the fused filament fabrication method and studied for their compressive response. The three-phase microstructure of syntactic foams fabricated in this work also contained about 10 vol.% matrix porosity for obtaining light weight for buoyancy applications. Filaments for 3D printing were developed using a single screw filament extruder and printed on a commercial 3D printer using settings optimized in this work. Three-dimensional printed blanks were machined to obtain specimens that were tested at 10 −4 s −1 , 10 −3 s −1 , 10 −2 s −1 and 1 s −1 strain rates. The compression results were compared with those of compression-molded (CM) specimens of the same materials. It was observed that the syntactic foam had a three-phase microstructure: matrix, microballoons and air voids. The air voids made the resulting foam lighter than the CM specimen. The moduli of the 3D-printed specimen were higher than those of the CM specimens at all strain rates. Yield strength was observed to be higher for CM samples than 3D-printed ones.
AB - High-density polyethylene and its syntactic foams reinforced with 20 vol.% and 40 vol.% glass microballoons were 3D printed using the fused filament fabrication method and studied for their compressive response. The three-phase microstructure of syntactic foams fabricated in this work also contained about 10 vol.% matrix porosity for obtaining light weight for buoyancy applications. Filaments for 3D printing were developed using a single screw filament extruder and printed on a commercial 3D printer using settings optimized in this work. Three-dimensional printed blanks were machined to obtain specimens that were tested at 10 −4 s −1 , 10 −3 s −1 , 10 −2 s −1 and 1 s −1 strain rates. The compression results were compared with those of compression-molded (CM) specimens of the same materials. It was observed that the syntactic foam had a three-phase microstructure: matrix, microballoons and air voids. The air voids made the resulting foam lighter than the CM specimen. The moduli of the 3D-printed specimen were higher than those of the CM specimens at all strain rates. Yield strength was observed to be higher for CM samples than 3D-printed ones.
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U2 - 10.1007/s11837-019-03355-5
DO - 10.1007/s11837-019-03355-5
M3 - Article
AN - SCOPUS:85061215719
SN - 1047-4838
VL - 71
SP - 1520
EP - 1527
JO - JOM
JF - JOM
IS - 4
ER -