| Autor: |
Juan Ocampo, Amber J. W. McClung, Nicolas R. Fabbri, George N. Khawly |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Mechanics of Biological Systems and Materials & Micro-and Nanomechanics & Research Applications ISBN: 9783030597641 |
| DOI: |
10.1007/978-3-030-59765-8_2 |
| Popis: |
As the fabrication of prototypes continues to become ever more accessible to wider audiences, and advances in additive manufacturing techniques such as 3D printing progresses, it is imperative to understand the properties of materials adopted. One specific material: Polylactic acid (PLA), is taking the spotlight for its cost efficiency, availability and biodegradable nature. The lack of characterization and variability in mechanical properties of 3D printed thermoplastics proves a hindrance in the application of this material. To address this issue, the current research aims to characterize PLA utilizing standard ISO 179-1:2010 while varying printing parameters such as infill density, and printing speed. This investigation focuses on how the afore mentioned properties affect the resulting impact energy of the polymer. Standard manufactured filament acquired from K-camel was extruded through a fused deposition 3D printer (Prusa Geetech I3) and tested on a CEAST 9050 impact testing machine. The result also showed a decrease in impact energy as infill density decreases at most of the print speeds tested as expected. The impact energy however did not show a clear pattern as print speed increases. Future work includes exploring the effect of the material cooling rate to identify if it explains the current patterns in mechanical performance presented here and in the published literature at large. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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