Additive Manufacturing of Syntactic Foams: Part 2: Specimen Printing and Mechanical Property Characterization
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Minerals, Metals and Materials Society 184 Thorn Hill Road Warrendale PA 15086
Abstract
High-density polyethylene (HDPE) and its fly ash cenosphere-filled syntactic foam filaments have been recently developed. These filaments are used for three-dimensional (3D) printing using a commercial printer. The developed syntactic foam filament (HDPE40) contains 40 wt.% cenospheres in the HDPE matrix. Printing parameters for HDPE and HDPE40 were optimized for use in widely available commercial printers, and specimens were three-dimensionally (3D) printed for tensile testing at strain rate of 10?3 s?1. Process optimization resulted in smooth operation of the 3D printer without nozzle clogging or cenosphere fracture during the printing process. Characterization results revealed that the tensile modulus values of 3D-printed HDPE and HDPE40 specimens were higher than those of injection-molded specimens, while the tensile strength was comparable, but the fracture strain and density were lower. © 2018, The Minerals, Metals & Materials Society.
Description
Keywords
Fly ash, Foams, Fracture, High density polyethylenes, Injection molding, Optimization, Printing, Printing machinery, Printing presses, Strain rate, Syntactics, Tensile strength, Tensile testing, Commercial printers, Fracture strain, High density polyethylene(HDPE), Injection-molded specimens, Nozzle clogging, Printing process, Property characterizations, Three-dimensional (3D) printing, 3D printers
Citation
JOM, 2018, 70, 3, pp. 310-314