Additive Manufacturing of Syntactic Foams: Part 2: Specimen Printing and Mechanical Property Characterization
| Autor: | Ashish Kumar Singh, Mrityunjay Doddamani, Balu Patil, Nikhil Gupta, Brooks Saltonstall, Niklas Hoffmann |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Syntactic foam General Engineering Young's modulus 02 engineering and technology Strain rate Polyethylene 021001 nanoscience & nanotechnology 01 natural sciences symbols.namesake chemistry.chemical_compound chemistry Cenosphere 0103 physical sciences Ultimate tensile strength symbols General Materials Science High-density polyethylene Composite material 0210 nano-technology Tensile testing |
| Zdroj: | JOM. 70:310-314 |
| ISSN: | 1543-1851 1047-4838 |
| DOI: | 10.1007/s11837-017-2731-x |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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